Rhythms of the hippocampal network

Colgin · Nature reviews. Neuroscience · 2016 · neuroscience · 10.1038/nrn.2016.21 · record Colgin2016-rhythms-of-the-hippocampal-network
tag layer · index · concepts · authors · עברית
Where this record's text came from. faceted 2026-08 by reading the locally held text (xml); every evidence string verified as an exact substring of that text before merging. Claim relations left EMPTY on purpose: this review cites everything by superscript number (e.g. 'a recent study 51', 'reviewed elsewhere 15 , 16'), so no sentence relates the paper to a NAMED piece of prior work; the only personal name in the body is 'Donald Hebb's cell assembly hypothesis 2', which is background rather than a stated relation of this paper to that work. Rule 7 says leave empty rather than infer from bare citations. Claim type was a genuine choice between 'mechanism' and 'critique': the abstract's 'However, recent findings have challenged traditional views on these behavioral functions.' is critique-shaped, but the body is organised as Mechanisms/Functions sections for each rhythm, so mechanism is the dominant shape. Replication status 'contested' reflects the paper's own reporting of unresolved disagreement, e.g. 'There is less agreement in the field about the functional significance of gamma rhythms 14 .' - it describes the state of the claims reviewed, not an independent replication attempt of this review. 2026-08-13 and 2026-08-14 schema-0.3 passes: every quote verified as an exact substring of the staged text and anchored at merge time; concept terms verified present; every edge endpoint an existing node.
39 quotations on this page contain a reference number where the paper printed a superscript. This journal style prints citations as raised numerals — parameters12,13 — and the extraction flattened them into the line, so the sentence reads parameters 12 , 13 . The digits are citation markers and not part of what the author wrote. The quotes keep them for the same reason they keep every other extraction fault: a quote is reproduced exactly or it proves nothing.
This record’s own method is review, and the tags below follow from that. A review’s findings, quantities and statistics are things stated IN this paper, and some of them report results obtained elsewhere. No tag on this page names a different author. Measured across every review in this corpus, 81% of a review’s tags carry no citation at all — most of them are the review speaking. The corpus does not adjudicate the rest: read an unmarked tag as a claim this paper makes, not necessarily one it made first.
How to read this page. The article itself is not reproduced here — this paper is not cleared for redistribution, so what follows is the tag layer alone. The evidence sentences are withheld with the article. The table at the foot lists every tag the record carries; each row names the facet it belongs to, and the whose words column says whether the tag records the paper's own wording or the tagger's sentence about the paper. Every tag links to each other paper in the corpus carrying it. The machine-readable edition of the same thing is the TEI file beside this one, where the tags live in standOff, and the article is at its publisher via the link below. When we have changed our mind. Some entries in the table begin with a word in capitals and the reason for it. EVIDENCE CORRECTED — the finding still stands, but we had quoted the wrong sentence from the paper, and the quotation has been replaced with the right one. RETRACTED — the entry itself was wrong; it stays on the page, marked, with the reason, rather than being deleted. WITHDRAWN AND REPLACED — the entry was wrong, and a corrected version of it appears in the entries below. Each mark carries its own reason, in brackets, because the reasons differ from one entry to the next. An entry we have WITHDRAWN is removed from this page and kept in the record, with its reason. A line reading Audit and a date is a later re-reading of the entry against its whole sentence: DOUBTFUL means it was kept, and the reason says what is loose about it. Quotation marks inside the tagger's sentence. Where a tag is the tagger's own sentence, a phrase in quotation marks inside it is borrowed from the paper — the tagger's wording around it is not. The paper's own sentence is the evidence quote for that row; on this page it is withheld with the article, and the article is at its publisher. Nothing inside quotation marks anywhere on this page is ours: if it is quoted, it is the paper's. Whose words a concept carries. A concept entry records a term the paper itself uses, so the term, the sense given for it, and its evidence are the paper's own words, quoted where the paper fixes them. This is the opposite of a sense entry in the tag table, which is the tagger's sentence about how the paper uses a term. Where a concept entry could not be grounded in the paper's words, the entry says so on its own row.
Other fields define these differently the same word, defined another way in another discipline
memory 23 fields · novelty 3 fields · frequency 2 fields · terminology 2 fields

Tags on this paper

Every tag the record carries, each linking to every other paper in the corpus that carries it. A tag appears here whether or not its words occur in the article — the spans below are only the ones a sentence in this paper licenses. Of the 22 concept tags on this paper, 4 are grounded in a quoted sentence. All carry the tagger's gloss of what the term means in this paper, which is not something the article can license.
theta gamma slow gamma fast gamma beta rhythm frequency LFP hippocampus CA1 CA3 interneuron place cell memory encoding retrieval replay consolidation terminology band HCN novelty Septal GABAergic pacemaker interneurons rhythmically disinhibit hippocampal pyramidal cells, entraining them to theta Ripple-associated shunting inhibition raises spike threshold so that only strongly potentiated cells fire, selecting which memories are sent to long-term storage Gamma frequency is set by the balance of excitatory drive onto and GABA conductance within the interneuron network Sharp-wave excitation drives place cells outside their place fields, enabling representation of distant locations Which gamma subtype is nested in the theta cycle switches the hippocampus between externally driven encoding and internally driven retrieval LFP rhythms are visible only because synchronous currents summate while non-synchronous ones cancel brain rhythms place cells theta phase precession neuronal ensembles review

Legend

second readingalternativesan independent re-reading of a facet, recorded whether or not it agrees
relation to other workclaim_relationshow this paper stands to another: agrees, contradicts, extends, qualifies
claim typeclaim_typethe shape of the claim: existence, mechanism, method, critique, prediction, null
concept edgeconcept_edgesan asserted relation between two concepts, with the sentence asserting it
conceptconceptsan idea the paper works with, quoted where the paper uses it
content tagcontent_tagsa finding, definition, quantity, statistic or variable named in the paper
contributioncontributionwhat the paper claims to add
controlcontrolsan experiment run to eliminate a rival explanation
limitationlimitationswhat the paper says its evidence cannot support
mechanismmechanismshow the reported effect is said to come about
methodmethodhow the paper produced its evidence
object of studyobject_of_studywhat the paper is about — the thing it investigates
phenomenonphenomenonthe effect or regularity under study
research questionresearch_questionthe question the paper sets itself
sensesensesa distinct use of a term, quoted where the paper fixes it
transfertransfersa method or concept carried in from another field
unrecordable relationunhoused_relationsa relation the paper asserts that this vocabulary cannot express, with the reason

The paper

The full text is not reproduced here. This article is not cleared for redistribution, so the page carries the tag layer only. Its evidence sentences are withheld; the grounding status remains with each tag, and the article itself is at https://doi.org/10.1038/nrn.2016.21. The reading view exists for the papers whose licence permits it.

Every tag on this page

alternatives 3 · claim_relations 6 · claim_type 1 · concept_edges 13 · concepts 4 · content_tags 42 · contribution 1 · controls 3 · limitations 10 · mechanisms 9 · method 1 · object_of_study 1 · phenomenon 1 · research_question 1 · senses 24 · transfers 2 · unhoused_relations 2

Relations on this page carry a quotation for the claim. Where a relation was separately evidenced — and so tested against the vocabulary for its type — the row says so; none of 13 relations here carry that mark. The rest are the tagger’s reading of the sentence quoted beside them.

facettagfieldconf.whose words
object_of_studythree rhythms that are DEFINED BY THEIR FREQUENCIES and have been PROPOSED TO PERFORM DISTINCT FUNCTIONS, and the recent findings that have challenged those functions
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
object_of_studythe paper's words
research_questionwhether the functions traditionally assigned to each rhythm survive the recent evidence
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
research_questionthe paper's words
contributionan updated, synthesized view of the roles and interactions of the three rhythms, with the evidence for and against each proposed function set out side by side
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
contributionthe paper's words
claim_typemechanism
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
claim_typethe paper's words
phenomenonhippocampal network rhythms
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
phenomenonthe paper's words
methodreview
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
also in: review
methodthe paper's words
mechanismsmechanisms
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
mechanisms[0]the tagger's words
mechanismsmechanisms
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
mechanisms[1]the tagger's words
mechanismsmechanisms
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
mechanisms[2]the tagger's words
mechanismsmechanisms
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
mechanisms[3]the tagger's words
mechanismsmechanisms
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
mechanisms[4]the tagger's words
mechanismsmechanisms
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
mechanisms[5]the tagger's words
mechanismsgamma-frequency spiking of FAST-SPIKING INTERNEURONS produces the observed gamma rhythms - interneuron spikes CONSISTENTLY PHASE-LOCK to gamma while pyramidal cell spikes DO NOT
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
mechanisms[6]1.0the tagger's words
mechanismsand the frequency itself is set by the balance of drive - in simulations gamma frequency INCREASED WITH INCREASED EXCITATORY DRIVE onto the interneurons and DECREASED WITH INCREASED GABA CONDUCTANCES
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
mechanisms[7]1.0the tagger's words
mechanismswith different interneuron classes firing at different theta phases, so DIFFERENT TYPES OF INTERNEURONS SERVE DIFFERENT FUNCTIONS AT DISTINCT PHASES of the theta cycle
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
mechanisms[8]1.0the tagger's words
limitationsThe review deliberately excludes other brain-state-dependent rhythms that also affect the hippocampus
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
what this limits: the scope of the review: OTHER BRAIN STATE-DEPENDENT RHYTHMS, SUCH AS SLEEP SPINDLES AND SLOW OSCILLATIONS, ALSO INFLUENCE HIPPOCAMPAL OPERATIONS; THESE RHYTHMS WILL NOT BE DISCUSSED IN DEPTH HERE
limitations[0]the tagger's words
limitationsThe evidence base is overwhelmingly rodent, because deep human hippocampal rhythm measurement is hard
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
what this limits: the transfer of every finding to humans: MANY OF THE FINDINGS DESCRIBED HERE HAVE BEEN MADE IN STUDIES CARRIED OUT IN LOWER MAMMALS, PARTICULARLY RODENTS
limitations[1]the tagger's words
limitationsThe proposed mechanisms for slow versus fast gamma generation are explicitly provisional
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
what this limits: the mechanistic account of slow versus fast gamma: THESE HYPOTHESES ARE TENTATIVE, AND MUCH WORK REMAINS TO BE DONE
limitations[2]the tagger's words
limitationsFindings on slow gamma do not all fit the memory-retrieval account the review favours
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
what this limits: the memory-retrieval account of slow gamma: THESE APPARENT INCONGRUITIES ACROSS STUDIES HIGHLIGHT THE NEED FOR FURTHER INVESTIGATION - not all findings fit it
limitations[3]the tagger's words
limitationsMOST OF THE STUDIES DESCRIBED ABOVE DID NOT DIFFERENTIATE BETWEEN DIFFERENT FREQUENCY VARIANTS OF GAMMA, and IT IS POSSIBLE THAT SLOW AND FAST GAMMA ARE GENERATED BY DIFFERENT MECHANISMS
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
what this limits: distinguishing slow from fast gamma, which most of the mechanism literature reviewed here cannot do
limitations[4]1.0the tagger's words
limitationsthe observed ~20-40 Hz activity OVERLAPPED WITH BOTH BETA AND SLOW GAMMA FREQUENCY BANDS and thus MAY REFLECT EITHER BETA, SLOW GAMMA, OR A COMBINATION OF BOTH
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
what this limits: the band assignment of that result, and of the band vocabulary generally: the ~20-40 Hz coupling OVERLAPPED WITH BOTH BETA AND SLOW GAMMA FREQUENCY BANDS
limitations[5]1.0the tagger's words
limitationsTHE HIGH VARIABILITY OF GAMMA FREQUENCY ALSO COMPLICATES ITS MEASUREMENT IN BEHAVING ANIMALS
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
what this limits: every gamma measurement in behaving animals: THE HIGH VARIABILITY OF GAMMA FREQUENCY ALSO COMPLICATES ITS MEASUREMENT
limitations[6]1.0the tagger's words
limitationsthese hypotheses are TENTATIVE, and MUCH WORK REMAINS TO BE DONE to uncover mechanisms underlying slow and fast gamma rhythms
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
what this limits: the same scope as limitations[2] - the generation mechanisms are tentative
limitations[7]1.0the tagger's words
limitationsthe precise role of HCN channels REMAINS UNCLEAR because ENHANCED theta rhythms occur in HCN1 knockout mice, where the channel was thought to FACILITATE theta
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
what this limits: the HCN account of theta: HCN1 IS THOUGHT TO FACILITATE THETA RHYTHMIC FIRING, yet ENHANCED theta rhythms occur in HCN1 knockout mice - the review carries both
limitations[8]1.0the tagger's words
limitationsmany of the findings are from RODENTS, in part because measuring rhythms in healthy human subjects WITHIN A DEEP-LYING STRUCTURE such as the hippocampus IS DIFFICULT
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
what this limits: the same scope as limitations[1], with the reason: measuring rhythms in healthy humans WITHIN A DE[ep structure] is hard, so the evidence base is rodent
limitations[9]1.0the tagger's words
transfersHebb's idea that memories are represented by distributed ensembles activated concurrently, used as the reason synchrony should matter to memory
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
transfers[0]0.8the tagger's words
transfersnetwork simulations in which gamma frequency follows excitatory drive and GABA conductance, used to explain why one circuit could produce both subtypes
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
transfers[1]1.0the tagger's words
controlsseptal inactivation, which removes theta while place fields are being formed
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
eliminates: theta as a requirement for spatial representations - place fields FORMED in novel environments DESPITE theta and theta entrainment being BLOCKED · outcome (stated by the tagger, no quotation): failed
controls[0]1.0the tagger's words
controlsan in vitro whole hippocampal preparation with no septal input at all
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
eliminates: the septum as the sole pacemaker - theta OCCURRED IN THE ABSENCE OF MS PACEMAKER INPUTS, which suggests theta can emerge from local circuit interactions · outcome (stated by the tagger, no quotation): partial
controls[1]1.0the tagger's words
controlsinterneurons checked for phase-locking to both gamma subtypes rather than one
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
eliminates: a clean two-circuit account - A SUBSTANTIAL PROPORTION OF CA1 INTERNEURONS PHASE-LOCK TO BOTH slow and fast gamma · outcome (stated by the tagger, no quotation): failed
controls[2]1.0the tagger's words
conceptsslow gamma
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
also in: slow gamma
concepts[2]the paper's words
conceptsCA3
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
also in: CA3
concepts[10]the paper's words
conceptsencoding
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
also in: encoding
concepts[14]0.85the paper's words
conceptsnovelty
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
also in: novelty
concepts[21]the paper's words
unhoused_relationsfast gamma → memory encoding
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
THE RELATION FAILS: the review reports that results do not support a memory-encoding function for fast gamma, and that a study found it linked to working memory BUT NOT memory encoding. No schema 0.3 type can express a relation that does not hold, so recording it at all means recording it here. Replaces the retracted concept_edges[9], which quoted this same sentence as evidence FOR the relation.
unhoused_relations[0]the tagger's words
unhoused_relationstheta frequency → functional significance
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
DECLARED OPEN BY THE REVIEW: 'some important questions remain ... Quotation withheld Specifically, is there any functional significance to the lower frequency of theta that occurs during novel experiences compared to familiar ones?' A relation the field has not established, stated as a question. Every edge type asserts that a relation HOLDS.
unhoused_relations[1]the tagger's words
sensesTHE OBJECT IS DEFINED BY FREQUENCY AND JUDGED BY FUNCTION: these rhythms ARE DEFINED BY THEIR FREQUENCIES, have behavioral correlates, and HAVE BEEN PROPOSED TO PERFORM DISTINCT FUNCTIONS - HOWEVER, RECENT FINDINGS HAVE CHALLENGED TRADITIONAL VIEWS ON THESE BEHAVIORAL FUNCTIONS
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[0]1.0the tagger's words
sensesand the assignment is stated as an expectation rather than a result: each rhythm is observed during particular behaviors and generated by specific mechanisms, so IT IS THEREFORE NOT SURPRISING THAT THESE DIFFERENT RHYTHMS ARE THOUGHT TO PERFORM DISTINCT FUNCTIONS - with THERE IS LESS AGREEMENT IN THE FIELD ABOUT THE FUNCTIONAL SIGNIFICANCE OF GAMMA
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[1]1.0the tagger's words
sensesA LIVE NAMING CONFLICT SETTLED IN A PARENTHESIS: the same activity HAS BEEN TERMED FAST GAMMA IN SOME STUDIES AND MIDFREQUENCY GAMMA IN OTHERS - (THE FORMER TERMINOLOGY WILL BE USED HERE). One review, one clause, and the field's vocabulary is decided for the reader
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[2]1.0the tagger's words
sensesAND THE EARLIER LITERATURE COULD NOT HAVE TOLD THEM APART: MOST OF THE STUDIES DESCRIBED ABOVE DID NOT DIFFERENTIATE BETWEEN DIFFERENT FREQUENCY VARIANTS OF GAMMA, and IT IS POSSIBLE THAT SLOW AND FAST GAMMA ARE GENERATED BY DIFFERENT MECHANISMS - a whole mechanism literature written with one word for two things
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[3]1.0the tagger's words
sensesA RESULT THAT CANNOT BE ASSIGNED TO A CATEGORY BECAUSE THE CATEGORIES OVERLAP: the observed ~20-40 Hz activity OVERLAPPED WITH BOTH BETA AND SLOW GAMMA FREQUENCY BANDS AND THUS MAY REFLECT EITHER BETA, SLOW GAMMA, OR A COMBINATION OF BOTH
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[4]1.0the tagger's words
senseswith the same term carrying two ranges inside one review - slow gamma introduced as ~25-55 Hz here, and reported as ~30-80 Hz three paragraphs later, against ~60-100 Hz for the fast one
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[5]1.0the tagger's words
sensesand the second range printed where a layer difference is being claimed: SLOW GAMMA (~30-80 Hz) ACTIVITY DOMINATED IN STRATUM RADIATUM, WHEREAS ~60-100 Hz GAMMA DOMINATED IN STRATUM LACUNOSUM-MOLECULARE - the two definitions overlap by 20 Hz
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[6]1.0the tagger's words
senseswith the measurement problem named as a property of the object: THE HIGH VARIABILITY OF GAMMA FREQUENCY ALSO COMPLICATES ITS MEASUREMENT IN BEHAVING ANIMALS
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[7]1.0the tagger's words
sensesA FOUNDING THEORY CALLED INTO QUESTION BY ONE STUDY: in the 1970s the extent to which theta was present PREDICTED HOW QUICKLY ANIMALS LEARNED, which LED TO THE THEORY that theta plays an essential role in learning and memory - HOWEVER, THE THEORY HAS BEEN CALLED INTO QUESTION
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[8]1.0the tagger's words
sensesand the evidence is two facts that no amount of theta-learning correlation can absorb: place fields WERE FORMED in novel environments DESPITE THETA BEING BLOCKED by septal inactivation, and FLYING BATS HAVE PLACE CELLS EVEN THOUGH these cells exhibit LITTLE TO NO THETA RHYTHMICITY - so THETA RHYTHMICITY IS NOT REQUIRED FOR THE FORMATION OF PLACE FIELDS
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[9]1.0the tagger's words
sensesTHE REVIEW'S STRUCTURE IS THE ARGUMENT: several studies have begun to address whether slow and fast gamma perform different functions, A FEW MAIN HYPOTHESES HAVE EMERGED, and EVIDENCE FOR AND AGAINST EACH OF THESE HYPOTHESES IS DISCUSSED BELOW
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[10]1.0the tagger's words
sensesand both hypotheses survive with their counter-evidence attached: HOWEVER, Quotation withheld - one study links it to WORKING MEMORY, BUT NOT MEMORY ENCODING
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[11]1.0the tagger's words
sensesand for the other: NOT ALL FINDINGS FROM STUDIES OF SLOW GAMMA FIT WITH THIS MEMORY RETRIEVAL HYPOTHESIS - THESE APPARENT INCONGRUITIES ACROSS STUDIES HIGHLIGHT THE NEED FOR FURTHER INVESTIGATION
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[12]1.0the tagger's words
sensesA MECHANISM THAT CONTRADICTS ITSELF IN TWO CITATIONS: HCN1 IS THOUGHT TO FACILITATE theta rhythmic firing and its blockade REDUCED theta entrainment - HOWEVER, THE PRECISE ROLE OF HCN CHANNELS REMAINS UNCLEAR BECAUSE IT HAS ALSO BEEN REPORTED THAT ENHANCED THETA RHYTHMS OCCUR IN HCN1 KNOCKOUT MICE
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[13]1.0the tagger's words
sensesand a pacemaker that turns out not to be necessary in vitro but necessary in vivo: THETA RHYTHMS CAN OCCUR IN THE ABSENCE OF MS PACEMAKER INPUTS in a whole hippocampal preparation, suggesting theta CAN ALSO EMERGE FROM LOCAL CIRCUIT INTERACTIONS - NONETHELESS, IT IS CLEAR THAT MS INPUTS ARE IMPORTANT for driving theta in behaving animals
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[14]1.0the tagger's words
senseswith the clean two-circuit story qualified by the cells themselves: A SUBSTANTIAL PROPORTION OF CA1 INTERNEURONS PHASE-LOCK TO BOTH SLOW AND FAST GAMMA, and MAY BE PART OF A NETWORK THAT CAN GENERATE EITHER, DEPENDING ON THE STATE OF THE NETWORK
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[15]1.0the tagger's words
sensesand the frequency is a consequence of drive rather than an identity: gamma frequency INCREASED WITH INCREASED EXCITATORY DRIVE onto the interneurons and DECREASED WITH INCREASED GABA CONDUCTANCES - which means the label follows the input, not the circuit
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[16]1.0the tagger's words
senseswith the mechanism section closing on its own status: HOWEVER, THESE HYPOTHESES ARE TENTATIVE, AND MUCH WORK REMAINS TO BE DONE
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[17]1.0the tagger's words
sensesTHE OBJECT IS VISIBLE ONLY WHERE IT IS SYNCHRONOUS: rhythms reflect synchronized activity BECAUSE SYNCHRONOUS CURRENTS SUM TOGETHER to generate large-amplitude fluctuations, WHEREAS NON-SYNCHRONIZED CURRENTS DO NOT SUM AND THUS REMAIN TOO SMALL TO BE DETECTED - the measurement selects what it can see
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[18]1.0the tagger's words
sensesand the region was chosen for the same reason: the hippocampus contains DENSELY PACKED NEURONS THAT GENERATE LARGE LFPs, especially CA1 because THE PYRAMIDAL CELL DENDRITES ARE ALIGNED IN PARALLEL - ACCORDINGLY, MANY STUDIES of the role of brain rhythms in memory HAVE BEEN CONDUCTED IN THE HIPPOCAMPUS
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[19]1.0the tagger's words
sensesand the species too: many findings are from LOWER MAMMALS, PARTICULARLY RODENTS, IN PART BECAUSE THE MEASUREMENT of brain rhythms in healthy human subjects WITHIN A DEEP-LYING STRUCTURE such as the hippocampus IS DIFFICULT
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[20]1.0the tagger's words
sensesTHE OPEN QUESTIONS ARE LISTED AS OPEN: what exactly IS the functional significance of variations in theta frequency, and WHY WOULD MEMORIES BE STORED OR CONSOLIDATED IN REVERSE ORDER? DO FORWARD AND REVERSE REPLAY SERVE DIFFERENT FUNCTIONS?
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[21]1.0the tagger's words
senseswith a gap at the center of the leading hypothesis: according to the consolidation hypothesis replay TRANSFERS MEMORIES FROM THE HIPPOCAMPUS TO THE NEOCORTEX, HOWEVER IT REMAINS UNKNOWN WHETHER COORDINATED SEQUENCE REPLAY OCCURS between the hippocampus and its major downstream target
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[22]1.0the tagger's words
sensesand the question this whole review turns on, asked last: DO DIFFERENT FREQUENCIES OF GAMMA REPRESENT DIFFERENT FUNCTIONAL STATES, AND IF SO, ARE DIFFERENT CIRCUITS INVOLVED IN THEIR GENERATION OR IS THE SAME CIRCUITRY SIMPLY ENTRAINED BY DIFFERENT INPUTS?
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
senses[23]1.0the tagger's words
alternativesclaim_type: critique
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
a second reading DIFFERING from the recorded value. Recorded: mechanism — note: a second reading, verbatim-verified, disagreeing with the value on the record. Not applied - a person decides.
alternatives.claim_typethe tagger's words
alternativesmethod: review of the generation mechanisms and the functional evidence for each rhythm, with the incongruities left standing rather than resolved
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
a second reading DIFFERING from the recorded value. Recorded: review — note: a second reading, verbatim-verified, disagreeing with the value on the record. Not applied - a person decides.
alternatives.methodthe tagger's words
alternativesphenomenon: periodically fluctuating waves of neuronal activity in the local field potential, visible only because synchronous currents sum and non-synchronous ones do not
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
a second reading DIFFERING from the recorded value. Recorded: hippocampal network rhythms — note: a second reading, verbatim-verified, disagreeing with the value on the record. Not applied - a person decides.
alternatives.phenomenonthe tagger's words
claim_relationscritiques → the traditional assignment of one memory function to each rhythm, which recent findings have challenged
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
differs in: whether the frequency variants within gamma were distinguished at all, since most studies did not
claim_relations[0]1.0the tagger's words
claim_relationscontradicts → the theory that theta is required for forming spatial memory representations, since place fields form without it and bats have place cells with little theta
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
differs in: THE AXIS IS WHETHER PLACE-FIELD DEVELOPMENT TRACKS LEARNING. 'Place fields emerge as animals gain experience with new environments, and Quotation withheld. It was therefore SURPRISING that this study showed...' The contradiction is aimed at the ASSUMED CORRESPONDENCE, which the span states before contradicting it.
claim_relations[1]1.0the tagger's words
claim_relationsqualifies → the memory-encoding hypothesis for fast gamma, which one study links instead to working memory
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
differs in: THE AXIS IS WHICH MEMORY PROCESS. 'a recent study has found that Quotation withheld, in mice performing a delayed nonmatching-to-place task.' The encoding hypothesis is not denied its association with fast gamma; it is denied THIS process.
claim_relations[2]1.0the tagger's words
claim_relationsqualifies → the memory-retrieval hypothesis for slow gamma, which novelty-related increases do not fit
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
differs in: THE AXIS IS NOVELTY. 'However, not all findings from studies of slow gamma fit with this memory retrieval hypothesis. Specifically, Quotation withheld.' The hypothesis is qualified by a condition it does not cover, not replaced.
claim_relations[3]1.0the tagger's words
claim_relationscritiques → the medial septum as sole pacemaker, since theta occurs in a preparation with no septal input
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
claim_relations[4]1.0the tagger's words
claim_relationspredicts → that whether different gamma frequencies mean different circuits or the same circuit differently driven is the question to settle next
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
claim_relations[5]1.0the tagger's words
concept_edgestheta —is-a→ rhythm
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
strength of the relation: 1 · note: IT IS THEREFORE NOT SURPRISING THAT THESE DIFFERENT RHYTHMS ARE THOUGHT TO PERFORM DISTINCT FUNCTIONS - and THERE IS LESS AGREEMENT IN THE FIELD ABOUT THE FUNCTIONAL SIGNIFICANCE OF GAMMA
also in: theta · rhythm
concept_edges[1]1.0the tagger's words
concept_edgesRETRACTED (REVERSED) · CA3 —causes→ slow gamma
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
RETRACTED: REVERSED. The span says slow gamma IS DRIVEN BY CA3, so the arrow runs CA3 -> slow gamma. The edge asserts the opposite causal direction. — strength of the relation: 1 · note: introduced as ~25-55 Hz and DRIVEN BY CA3 - and reported as ~30-80 Hz three paragraphs later — direction corrected 2026-08-20 by the project: the quote puts 'CA3' on the causing side. The edge previously read slow gamma --causes--> CA3, which is the reverse of its own sentence. Nothing else on the row changed; the quote, weight and anchor are untouched.
also in: CA3 · slow gamma
concept_edges[3]1.0the tagger's words
concept_edgesslow gamma —part-of→ gamma
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
strength of the relation: 1 · note: SLOW GAMMA (~30-80 Hz) DOMINATED IN STRATUM RADIATUM, WHEREAS ~60-100 Hz GAMMA DOMINATED IN STRATUM LACUNOSUM-MOLECULARE - the two definitions overlap by 20 Hz
also in: slow gamma · gamma
concept_edges[4]1.0the tagger's words
concept_edgesbeta —contrasted-with→ slow gamma
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
strength of the relation: 1 · note: A RESULT THAT CANNOT BE ASSIGNED BECAUSE THE CATEGORIES OVERLAP - the ~20-40 Hz activity OVERLAPPED WITH BOTH BANDS and MAY REFLECT EITHER BETA, SLOW GAMMA, OR A COMBINATION OF BOTH Audit 2026-09-28: DOUBTFUL - read against its span and kept, but the span describes 20-40 Hz coupling; the contrast with slow gamma is not stated.
also in: beta · slow gamma
concept_edges[5]1.0the tagger's words
concept_edgestheta —causes→ memory
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
strength of the relation: 1 · note: A FOUNDING THEORY CALLED INTO QUESTION - the 1970s correlation LED TO THE THEORY that theta plays an essential role, and THE THEORY HAS BEEN CALLED INTO QUESTION BY A RECENT STUDY Audit 2026-09-28: DOUBTFUL - read against its span and kept, but the span says theta predicted learning speed; causes overstates a prediction.
also in: theta · memory
concept_edges[7]1.0the tagger's words
concept_edgesslow gamma —causes→ retrieval
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
strength of the relation: 1 · note: NOT ALL FINDINGS FIT WITH THIS MEMORY RETRIEVAL HYPOTHESIS - THESE APPARENT INCONGRUITIES ACROSS STUDIES HIGHLIGHT THE NEED FOR FURTHER INVESTIGATION Audit 2026-09-28: DOUBTFUL - read against its span and kept, but the span refers to a retrieval hypothesis that some findings do not fit; causes states a hypothesis as a finding.
also in: slow gamma · retrieval
concept_edges[10]1.0the tagger's words
concept_edgesnovelty —causes→ slow gamma
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
status: CITED, AND CITED AS A COMPLICATION: the review reports these studies as findings that do NOT fit the memory-retrieval hypothesis it has just set out · direction on the measure: increases · strength of the relation: 1
also in: novelty · slow gamma
concept_edges[11]1.0the tagger's words
concept_edgesinterneuron —causes→ gamma
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
strength of the relation: 1 · note: INTERNEURON SPIKES CONSISTENTLY PHASE-LOCK TO GAMMA OSCILLATIONS, WHEREAS PYRAMIDAL CELL SPIKES DO NOT
also in: interneuron · gamma
concept_edges[12]1.0the tagger's words
concept_edgesinterneuron —causes→ frequency
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
strength of the relation: 1 · note: gamma frequency INCREASED WITH INCREASED EXCITATORY DRIVE onto the interneurons and DECREASED WITH INCREASED GABA CONDUCTANCES - the label follows the input, not the circuit Audit 2026-09-28: DOUBTFUL - read against its span and kept, but the span says the frequency of interneuron-generated gamma varies with input strength; the endpoint 'frequency' drops 'gamma'.
concept_edges[14]1.0the tagger's words
concept_edgesHCN —causes→ theta
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
status: ATTRIBUTED, WITH ONE CITED EXPERIMENT BEHIND IT AND A QUALIFICATION AFTER IT: 'Quotation withheld 41, 42, and HCN1 BLOCKADE REDUCED theta entrainment of pyramidal cell spikes 38. HOWEVER, THE PRECISE ROLE OF HCN CHANNELS IN THETA PRODUCTI[ON]...' Enriched rather than retracted because the middle clause is a cited experimental result, not only a belief - but neither the belief nor the experiment is this review's, and the sentence after it reopens the question. · strength of the relation: 1 · note: A MECHANISM THAT CONTRADICTS ITSELF IN TWO CITATIONS - HCN1 IS THOUGHT TO FACILITATE theta, and ENHANCED THETA RHYTHMS OCCUR IN HCN1 KNOCKOUT MICE Audit 2026-09-28: DOUBTFUL - read against its full span and kept, but HCN1 is 'THOUGHT TO facilitate' theta and its role 'remains unclear'; causes is hedged.
also in: HCN · theta
concept_edges[16]1.0the tagger's words
concept_edgesLFP —operationalised-as→ rhythm
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
strength of the relation: 1 · note: THE OBJECT IS VISIBLE ONLY WHERE IT IS SYNCHRONOUS - synchronous currents SUM TOGETHER, WHEREAS NON-SYNCHRONIZED CURRENTS DO NOT SUM AND THUS REMAIN TOO SMALL TO BE DETECTED Audit 2026-09-28: DOUBTFUL - read against its span and kept, but rhythms appear as LFP fluctuations; operationalised-as is loose.
also in: LFP · rhythm
concept_edges[17]1.0the tagger's words
concept_edgeshippocampus —causes→ LFP
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
strength of the relation: 1 · note: DENSELY PACKED NEURONS THAT GENERATE LARGE LFPs, especially CA1 because THE PYRAMIDAL CELL DENDRITES ARE ALIGNED IN PARALLEL - ACCORDINGLY, MANY STUDIES HAVE BEEN CONDUCTED IN THE HIPPOCAMPUS Audit 2026-09-28: DOUBTFUL - read against its span and kept, but the span says hippocampal neurons generate large LFPs; 'hippocampus causes LFP' is loose.
also in: hippocampus · LFP
concept_edges[18]1.0the tagger's words
concept_edgesRETRACTED (A HYPOTHESIS EXPLICITLY FRAMED AS A GAP IN KNOWLEDGE) · replay —causes→ consolidation
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
RETRACTED: A HYPOTHESIS EXPLICITLY FRAMED AS A GAP IN KNOWLEDGE. The span: 'ANOTHER CRITICAL…' The sentence naming the relation is bracketed by 'critical gap in knowledge' before and 'remains unknown' after. A reader joining on 'X --causes--> Y' takes it as a causal relation this paper reports. — strength of the relation: 1 · note: a gap at the center of the leading hypothesis - IT REMAINS UNKNOWN WHETHER COORDINATED SEQUENCE REPLAY OCCURS between the hippocampus and its major downstream cortical target Audit 2026-09-28: DOUBTFUL - read against its span and kept, but the span states the consolidation hypothesis of replay; causes states a hypothesis as a finding.
also in: replay · consolidation
concept_edges[20]1.0the tagger's words
content_tagsTheta rhythmicity is not necessary for single place cells to form place fields, undercutting the assumption that theta is required for building spatial memory representations at the single-cell level.
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[0]the tagger's words
content_tagsBlocking theta by MS inactivation impaired a delayed spatial alternation task and disrupted ordered place-cell ensembles.
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[1]the tagger's words
content_tagsRIPPLES ARE GENERATED LOCALLY IN CA1 by ripple-frequency spiking of PERISOMATICALLY TARGETING BASKET CELL INTERNEURONS
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[2]the tagger's words
content_tagsSharp waves are excitatory events transmitted from CA3 to CA1.
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[3]the tagger's words
content_tagsRecent evidence suggests sharp wave-ripples also play a key role in aspects of active spatial navigation.
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[4]the tagger's words
content_tagsSlow (~25-55 Hz) and fast (~60-100 Hz) gamma appear to have different origins and may serve different functions.
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[5]the tagger's words
content_tagsthese findings suggest that SLOW GAMMA IS IMPORTANT IN MEMORY RETRIEVAL, since replay is thought to reflect REACTIVATION OF MEMORIES OF EARLIER EXPERIENCES
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[6]the tagger's words
content_tagsthese rhythms ARE DEFINED BY THEIR FREQUENCIES and HAVE BEEN PROPOSED TO PERFORM DISTINCT FUNCTIONS - HOWEVER, RECENT FINDINGS HAVE CHALLENGED TRADITIONAL VIEWS ON THESE BEHAVIORAL FUNCTIONS
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[7]1.0the tagger's words
content_tagsTHERE IS LESS AGREEMENT IN THE FIELD ABOUT THE FUNCTIONAL SIGNIFICANCE OF GAMMA RHYTHMS
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[8]1.0the tagger's words
content_tagsthis type of activity HAS BEEN TERMED FAST GAMMA IN SOME STUDIES AND MIDFREQUENCY GAMMA IN OTHERS - THE FORMER TERMINOLOGY WILL BE USED HERE
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[9]1.0the tagger's words
content_tagsMOST OF THE STUDIES DESCRIBED ABOVE DID NOT DIFFERENTIATE BETWEEN DIFFERENT FREQUENCY VARIANTS OF GAMMA, AND IT IS POSSIBLE THAT SLOW AND FAST GAMMA ARE GENERATED BY DIFFERENT MECHANISMS
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[10]1.0the tagger's words
content_tagsthe observed ~20-40 Hz activity OVERLAPPED WITH BOTH BETA AND SLOW GAMMA FREQUENCY BANDS AND THUS MAY REFLECT EITHER BETA, SLOW GAMMA, OR A COMBINATION OF BOTH
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[11]1.0the tagger's words
content_tagsSLOW GAMMA (~30-80 Hz) ACTIVITY DOMINATED IN STRATUM RADIATUM, WHEREAS ~60-100 Hz GAMMA DOMINATED IN STRATUM LACUNOSUM-MOLECULARE
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[12]1.0the tagger's words
content_tagsTHE HIGH VARIABILITY OF GAMMA FREQUENCY ALSO COMPLICATES ITS MEASUREMENT IN BEHAVING ANIMALS
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[13]1.0the tagger's words
content_tagsTHE THEORY HAS BEEN CALLED INTO QUESTION BY A RECENT STUDY involving recordings from place cells
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[14]1.0the tagger's words
content_tagsTHETA RHYTHMICITY IS NOT REQUIRED FOR THE FORMATION OF PLACE FIELDS, and thus theta is NOT REQUIRED FOR THE FORMATION OF SPATIAL MEMORY REPRESENTATIONS AT THE SINGLE CELL LEVEL
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[15]1.0the tagger's words
content_tagsHOWEVER, Quotation withheld
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[16]1.0the tagger's words
content_tagsNOT ALL FINDINGS FROM STUDIES OF SLOW GAMMA FIT WITH THIS MEMORY RETRIEVAL HYPOTHESIS - THESE APPARENT INCONGRUITIES ACROSS STUDIES HIGHLIGHT THE NEED FOR FURTHER INVESTIGATION
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[17]1.0the tagger's words
content_tagsTHE PRECISE ROLE OF HCN CHANNELS IN THETA PRODUCTION REMAINS UNCLEAR BECAUSE IT HAS ALSO BEEN REPORTED THAT ENHANCED THETA RHYTHMS OCCUR IN HCN1 KNOCKOUT MICE
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[18]1.0the tagger's words
content_tagsTHETA RHYTHMS CAN OCCUR IN THE ABSENCE OF MS PACEMAKER INPUTS, in a whole hippocampal in vitro preparation
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[19]1.0the tagger's words
content_tagsA SUBSTANTIAL PROPORTION OF CA1 INTERNEURONS PHASE-LOCK TO BOTH SLOW AND FAST GAMMA
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[20]1.0the tagger's words
content_tagsgamma frequency was found to INCREASE WITH INCREASED EXCITATORY DRIVE onto the interneurons, and to DECREASE WITH INCREASED GABA CONDUCTANCES
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[21]1.0the tagger's words
content_tagsHOWEVER, THESE HYPOTHESES ARE TENTATIVE, AND MUCH WORK REMAINS TO BE DONE to uncover mechanisms underlying slow and fast gamma rhythms
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[22]1.0the tagger's words
content_tagssynchronous currents SUM TOGETHER to generate large-amplitude fluctuations in LFP, WHEREAS NON-SYNCHRONIZED CURRENTS DO NOT SUM TOGETHER AND THUS REMAIN TOO SMALL TO BE DETECTED
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[23]1.0the tagger's words
content_tagsIT REMAINS UNKNOWN WHETHER COORDINATED SEQUENCE REPLAY OCCURS BETWEEN THE HIPPOCAMPUS AND ITS MAJOR DOWNSTREAM CORTICAL TARGET
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[24]1.0the tagger's words
content_tagsDO DIFFERENT FREQUENCIES OF GAMMA REPRESENT DIFFERENT FUNCTIONAL STATES OF THE HIPPOCAMPAL NETWORK, and if so ARE DIFFERENT CIRCUITS INVOLVED IN THEIR GENERATION OR IS THE SAME CIRCUITRY SIMPLY ENTRAINED BY DIFFERENT INPUTS?
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.findings[25]1.0the tagger's words
content_tagsbrain rhythms
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
also in: brain rhythms
content_tags.definitions[0]the tagger's words
content_tagsplace cells
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
also in: place cells
content_tags.definitions[1]the tagger's words
content_tagsreplay
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
also in: replay
content_tags.definitions[2]the tagger's words
content_tagstheta phase precession
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.definitions[3]the tagger's words
content_tagsneuronal ensembles
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.definitions[5]the tagger's words
content_tagsrhythm
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
also in: rhythm
content_tags.definitions[6]1.0the tagger's words
content_tagsslow gamma
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
also in: slow gamma
content_tags.definitions[7]1.0the tagger's words
content_tagsfast gamma
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
also in: fast gamma
content_tags.definitions[8]1.0the tagger's words
content_tags~4-12 Hz — frequency band the review assigns to hippocampal theta
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.quantities[0]the tagger's words
content_tags~25-55 Hz and ~60-100 Hz — frequency bands separating slow gamma from fast gamma
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.quantities[1]the tagger's words
content_tags~30-80 Hz — gamma band dominating in stratum radiatum, versus ~60-100 Hz in stratum lacunosum-moleculare
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.quantities[2]the tagger's words
content_tags~25-55 Hz — slow gamma as this review first defines it - the same term is given as ~30-80 Hz three paragraphs later
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.quantities[3]1.0the tagger's words
content_tags~30-80 Hz — slow gamma as reported in the layer comparison, overlapping the ~60-100 Hz fast range by 20 Hz
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.quantities[4]1.0the tagger's words
content_tags~20-40 Hz — the coupling that cannot be assigned to a band, since it overlaps both beta and slow gamma
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
content_tags.quantities[5]1.0the tagger's words
content_tagsfrequency
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
also in: frequency
content_tags.variables[0]1.0the tagger's words
content_tagstheta
Quotation withheld — this record is not cleared for redistribution. The sentence is in the paper at the link above.
also in: theta
content_tags.variables[1]1.0the tagger's words

Interpretive choices

Tags that could not be placed in the text:

What was deliberately not tagged, and why, is recorded per paper by the tagger. Where a paper has no such record, this page says so rather than implying that nothing was declined.

© 2026 Shir Sivroni · ORCID 0009-0000-2597-2824