Percepts to recollections: insights from single neuron recordings in the human brain — TEI-tagged view

Suthana, Fried · 2012 · neuroscience · doi:10.1016/j.tics.2012.06.006 · full text at the source · TEI xml · tagged edition · index · concepts · authors
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 is deliberately EMPTY. This is a narrative review, so almost every sentence describes named prior work (Cerf and colleagues, Gelbard-Sagiv and colleagues, Rutishauser and colleagues, Suthana and colleagues, Liu and colleagues), but nowhere does the article state a relation between its own contribution and a specific named study - it reports those studies rather than positioning itself for or against them. Recording an inferred relation here would have been a falsehood, so the array is left empty per the rule. Claim type is existence: the review's assembled claim is that MTL neurons possess these response properties, not an account of the causal mechanism producing them. 2026-08-12 and 2026-08-15 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.
1 quote on this page breaks a word across a line. The PDF this text was extracted from hyphenated a word at the end of a printed line — adversar- ial, repre- sentations — and the extractor kept the hyphen and the space. The quotes keep them because a quote is reproduced exactly or it proves nothing: the break is the typesetter’s, not the author’s. A search of this page will not find the affected words.
2 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.
Other fields define these differently the same word, defined another way in another discipline
concept 9 fields · episodic memory 3 fields · familiarity 2 fields · Spikes 2 fields
Tags on this paper every tag the record carries, whether or not the words occur in the text below — a number is how many papers in the corpus carry that tag; a tag with no number is unique to this paper
medial temporal lobe8 MTL6 episodic memory15 declarative memory3 invariant3 conscious perception5 place cells13 grid cells5 recollection5 familiarity8 theta15 local field potentials7 spike sorting6 perirhinal3 hippocampus29 entorhinal6 review319

Our tag layer for this paper

Cross-disciplinary analysis
content-tags & facets: phenomenon · claim-type · cross-domain-transfer · mechanism · claim-relation · replication-status · limitation — grounded in the full text
phenomenonsingle-neuron coding in the human medial temporal lobe during perception and episodic memory— “The medial temporal lobe (MTL) is central to episodic memory, yet the neuronal code underlying translation from sensory information to memory remains unclear.”
claim-typeexistence— “Recent evidence illustrates several striking response properties of MTL neurons.”
method — evidence— “In the current review, we summarize recent data afforded by key methodological advancements in human single neuron data acquisition and analysis ( Figure 1 , see Box 1 ).”
object of study — evidence— “The medial temporal lobe (MTL) is central to episodic memory, yet the neuronal code underlying translation from sensory information to memory remains unclear.”
research question — evidence— “The medial temporal lobe (MTL) is central to episodic memory, yet the neuronal code underlying translation from sensory information to memory remains unclear.”
contribution — evidence— “Recent evidence illustrates several striking response properties of MTL neurons. Responses are selective yet invariant, associated with conscious perception, can be internally generated and modulated, and spontaneously retrieved. Representation of information by these neurons is highly explicit, suggesting abstraction of information for…
transferfrom rodent hippocampal physiology: the place cell, transferred twice - literally to human virtual navigation, and metaphorically to concept coding in a cognitive multidimensional space— “The invariant responses to individual persons and landmarks observed in the human MTL may be compared to the striking place fields in rodents, which appear to encode particular locations in the animal’s environment”transfers[0]
transferfrom rodent optogenetics: reactivation of a fear memory by stimulating specific hippocampal neurons, held up as the model for a causal human approach— “Since the pioneering observations of Wilder Penfield, focal electrical stimulation of MTL circuits has been shown to evoke old memories or the feeling of déjà”transfers[1]
mechanismMTL neurons transform novel percepts into sparse, abstracted-yet-detailed representations, and it is this abstraction that later allows the representation to be summoned by either internal or external cues, producing conscious episodic recall— “Given the critical role of these regions in episodic memory, we posit that these responses are central in the transformation of novel stimuli to representations that can be later consciously retrieved as episodic memories.”mechanisms[0]
mechanismRepresentations must carry both detail and abstraction (loss of detail) so that a partial internal or external cue is sufficient to reactivate them— “As such, these representations need to possess detail but also abstraction (i.e. the loss of detail), so that they can be later summoned by internal as well as external cues.”mechanisms[1]
mechanismEntorhinal stimulation enhances memory by resetting the phase of the hippocampal theta rhythm, aligning encoding with a favourable oscillatory phase— “Interestingly stimulation of the entorhinal area reset the phase of the theta rhythm in the hippocampus, providing a possible mechanism for memory enhancement.”mechanisms[2]
mechanismthe hippocampus sits at the top of a multisensory hierarchy, receiving object information via perirhinal and spatial information via parahippocampal cortex— “Results were consistent with the anatomical hierarchy within the MTL; the highest percentage of neurons with modality-independent invariant responses was found in the hippocampus and entorhinal cortex as compared to the amygdala or parahippocampal cortex”mechanisms[3]
mechanisminvariance crosses sensory modality: the same neuron responds to a concept presented as image, sound or written word— “Recently, it was shown that this invariance crosses modalities, meaning that MTL neurons may exhibit a selective and “invariant” response to a particular stimulus out of 100 images and do so independent of the sensory modality (visual image, audio, or written iconic representations) through which the stimulus was presented”mechanisms[4]
mechanismselective responses appear only when the subject consciously recognises the stimulus, and are near-silent when recognition fails— “Using flash suppression and backward masking paradigms it has been shown that selective MTL responses are mainly triggered when accompanied by the participants’ conscious perception or recognition of the stimulus [ 37 – 38 ]. When varying the display time of an image between 33 to 256 msec, MTL neurons selective for an image significantly…mechanisms[5]
mechanismimagining a stimulus recruits the same neuron that fires when it is seen, and subjects can steer a display by modulating two such neurons— “Subjects were able to successfully control which image was projected by altering the firing rate of two independently selective neurons independent of the visual input of the stimulus on the screen ( Figure 3 ). These results highlight the power of internal representation to override sensory input.”mechanisms[6]
mechanismhippocampal and entorhinal neurons reactivate just before a spontaneous verbal report of recall, and only those regions do— “While sustained selective responses during viewing of episodes was present in neurons of other brain regions such as amygdala and frontal cortex, the specific reactivation prior to reported recall was only present in the hippocampus and entorhinal cortex”mechanisms[7]
mechanismfiring-rate correlation across successive time points within an episode grows with repetition and predicts later recall, proposed as temporal binding— “Furthermore, the degree of correlation of hippocampal neuronal firing rate across successive time points within an episode increased over subsequent repetitions of the same episode, and predicted subjects’ future recall performance [ 59 ]. These observations suggest a possible…mechanisms[8]
mechanismentorhinal white-matter stimulation enhances memory and resets hippocampal theta phase, offered as the mechanismmechanisms[9]
cites Gelbard-Sagiv et al. on hippocampal reactivation before free recall - a paper independently tagged in this corpusclaim_relations[0]
supports the view that MTL neurons code concepts explicitly and invariantly
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claim_relations[1]
qualifies the inference from selective responses to necessity for conscious perception
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claim_relations[2]
supports the account of hippocampus as tracking memory strength rather than distinguishing recollection from familiarity
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claim_relations[3]
extends rodent place-cell physiology, by proposing concept cells as place cells in a cognitive space
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claim_relations[4]
senseinvariant here means invariant across physical form AND across sensory modality - image, sound, written name - not merely across viewpoint
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senses[0]
senseplace cell is used twice over: literally for rodent and human spatial cells, and metaphorically for concept cells as place cells in a cognitive multidimensional space
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senses[1]
senserecollection versus familiarity is a behavioural distinction operationalised by whether spatial position is also recalled; the hippocampal data are read as tracking memory strength instead
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senses[2]
sensedeclarative memory is defined here by what the SUBJECT can report, which is why the paper argues the question belongs to humans
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senses[3]
senseultra sparse coding, asserted for MTL - note that Rigotti2013 reports PFC representations are rather dense, a different region and the opposite value of the same construct
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senses[4]
auditEVIDENCE CORRECTED (RE-GROUNDED) · recollection —contrasted-with→ familiarity — Audit 2026-09-28: DOUBTFUL - read against its span and kept, but the span says the hippocampus does not differentiate recollection from familiarity; contrasted-with is loose.
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concept_edges[2]
noteEVIDENCE CORRECTED (RE-GROUNDED) · recollection —contrasted-with→ familiarity — and the hippocampal data are read as NOT respecting the distinction
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concept_edges[2]
retractedEVIDENCE CORRECTED (RE-GROUNDED) · recollection —contrasted-with→ familiarity — RE-GROUNDED. The old span named neither. This clause names both and sets them as the two mechanisms a recognition task can run on.
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Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
concept_edges[2]
auditEVIDENCE CORRECTED (RE-GROUNDED) · theta —causes→ episodic memory — Audit 2026-09-28: DOUBTFUL - read against its span and kept, but theta-linked spiking predicted subsequent memory; causes overstates a prediction.
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concept_edges[4]
evidential statusEVIDENCE CORRECTED (RE-GROUNDED) · theta —causes→ episodic memory — PREDICTIVE, NOT DEMONSTRATED CAUSAL. The span reports that the tighter spike-theta coordination PREDICTED which memories succeeded; nothing was manipulated, so the direction of the arrow is an inference the paper does not test.
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Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
concept_edges[4]
noteEVIDENCE CORRECTED (RE-GROUNDED) · theta —causes→ episodic memory — predictive rather than demonstrated causal; the weight carries that
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concept_edges[4]
retractedEVIDENCE CORRECTED (RE-GROUNDED) · theta —causes→ episodic memory — RE-GROUNDED. The old span described the coordination without naming episodic memory. This sentence names both and states the claim the edge records - 'implicate A DIRECT ROLE FOR theta-linked spiking activity…' - which is a stronger causal reading than the old span supported.
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concept_edges[4]
weightEVIDENCE CORRECTED (RE-GROUNDED) · theta —causes→ episodic memory — 0.7
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concept_edges[4]
noterecollection —contrasted-with→ familiarity — RE-GROUNDS another row of this record: the relation was always stated, the endpoint names were not in the span.
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concept_edges[5]
notetheta —causes→ episodic memory — RE-GROUNDS another row of this record: the old span named ONE endpoint.
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concept_edges[6]
weighttheta —causes→ episodic memory — 0.7
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concept_edges[6]
for which uselimitation — the evidence base for human single-neuron work: THE DATA PRESENTED ARE RARE AND LIMITED BY CLINICAL OPPORTUNITIES
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limitations[0]
for which uselimitation — any generalisation beyond the implanted population: STUDIES ARE DONE ONLY IN SPECIAL CIRCUMSTANCES WHERE ELECTRODES ARE PLACED IN THE BRAIN FOR SPECIFIC CLINICAL REASONS
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limitations[1]
for which uselimitation — anterior-posterior comparisons along the hippocampal axis: SYSTEMATIC ANTERIOR-POSTERIOR ANALYSIS IN THE HIPPOCAMPAL AXIS WILL HAVE TO AWAIT FUTURE STUDIES
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limitations[2]
for which uselimitation — the proposed hippocampal/perirhinal dissociation: HUMAN SINGLE NEURON STUDIES TO DATE HAVE NOT RECORDED FROM PERIRHINAL NEURONS, so FUTURE STUDIES ARE NEEDED TO INVESTIGATE THIS DISSOCIATION
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limitations[3]
for which uselimitation — necessity claims specifically: THE CORRELATION OF SINGLE NEURON RESPONSES IN THE MTL WITH SPECIFIC CONSCIOUS PERCEPTS DOES NOT IMPLY THAT THESE REGIONS ARE NECESSARY FOR CONSCIOUS PERCEPTS
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limitations[4]
for which uselimitation — the studies that used familiar stimuli, and the familiarity reading of their responses: THEY OFTEN USED STIMULI THAT WERE HIGHLY FAMILIAR TO THE PARTICIPANT (E.G. A FAMILY MEMBER OR FAMOUS PERSON/LANDMARK)
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limitations[5]
for which uselimitation — single-memory claims: THE RESPONSES IN THE PREVIOUSLY DISCUSSED STUDIES WERE NOT SPECIFIC TO INDIVIDUAL STIMULI AND THUS DO NO NECESSARILY REPRESENT SINGLE MEMORIES
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limitations[6]
for which uselimitation — the same scope as limitations[3] - the hippocampal/perirhinal recollection-familiarity dissociation, untested because no human perirhinal neurons have been recorded
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limitations[7]
for which uselimitation — real-world navigation studies: PATIENTS LIMITED TO THEIR HOSPITAL ROOM WHO CANNOT NAVIGATE A REAL ENVIRONMENT DURING RECORDINGS
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limitations[8]
for which uselimitation — any population-level claim: THE ACTIVITY OF LESS THAN 100 NEURONS ARE SIMULTANEOUSLY RECORDED AND THESE NEURONS MAY BE DISTRIBUTED ACROSS SEVERAL BRAIN AREAS, WHICH NEED TO BE CLINICALLY SAMPLED
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limitations[9]
for which uselimitation — single-neuron claims in dense structures: SPIKES DETECTED ON A SINGLE MICROELECTRODE MOST LIKELY ORIGINATE FROM SEVERAL NEIGHBORING NEURONS, ESPECIALLY WITHIN BRAIN AREAS THAT HAVE DENSELY PACKED CELLULAR STRUCTURES, SUCH AS THE HIPPOCAMPUS
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limitations[10]
duplicate oflimitation — limitations[2]
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limitations[11]
for which uselimitation — the same scope as limitations[2] - the anterior-posterior axis, unanalysable while recordings are ANTERIOR AND MIDDLE only
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limitations[11]
for which uselimitation — any localisation finer than the bundle: BUNDLES OF MICROELECTRODES CAN BE LOCALIZED TO AREAS AS SMALL AS 1mm, ALTHOUGH SEPARATION OF A SINGLE MICROELECTRODE FROM ITS BUNDLED NEIGHBORING ELECTRODES IS STILL A CHALLENGE
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limitations[12]
replicationuntested
limitationThe human single-neuron dataset is rare and constrained by what clinical circumstances permit.
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limitations[0]
limitationRecordings are only possible where electrodes are implanted for clinical reasons, restricting the tasks and settings that can be studied.
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limitations[1]
limitationSampling is biased to anterior and middle hippocampus, so anterior-posterior comparisons cannot yet be made.
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limitations[2]
limitationNo human perirhinal neurons have been recorded, so the proposed hippocampus/perirhinal recollection-familiarity dissociation cannot be tested.
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limitations[3]
limitationcorrelation of single-neuron responses with conscious percepts does not establish that the region is necessary for them
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limitations[4]
limitationmost stimuli used were highly familiar to the participant, so the responses may partly reflect familiarity
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limitations[5]
limitationthe recognition-related responses were not stimulus-specific and so need not represent single memories
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limitations[6]
limitationno human single-neuron study has recorded from perirhinal cortex, leaving the key dissociation untested
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limitations[7]
limitationrecordings come only from patients confined to a hospital room who cannot navigate a real environment
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limitations[8]
limitationfewer than 100 neurons are recorded at once, scattered across regions chosen on clinical grounds
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limitations[9]
limitationspikes on one microelectrode probably come from several neighbouring neurons, especially in densely packed hippocampus
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limitations[10]
limitationrecordings are almost all anterior and middle hippocampus, so the anterior-posterior axis cannot yet be analysed
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limitations[11]
limitationelectrode bundles can be localised to about 1 mm but individual electrodes within a bundle cannot be separated
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limitations[12]
Content tags
content-observations: finding · quantity · variable · definition · key-term — grounded in the full text
findingThe selective responses of human MTL neurons are invariant not only across different pictures of the same concept but across sensory modality, firing to the spoken name, written name or image of the same entity.
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content_tags.findings[0]
findingSelective and invariant MTL responses have relatively long latencies, often 300-500 ms.
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content_tags.findings[1]
findingMTL neurons selective for an image significantly increase firing only if the subject recognises it, even at 33 ms exposure.
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content_tags.findings[2]
findingSubjects can volitionally drive the firing of individual MTL neurons to determine which of two competing images is displayed, overriding the actual visual input on the screen.
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content_tags.findings[3]
findingHippocampal and entorhinal neurons selectively active during the initial viewing of a film episode were reactivated just before the subject verbally reported recalling it.
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content_tags.findings[4]
findingTighter phase coordination between hippocampal spiking and the theta LFP during encoding predicts whether that particular image will later be remembered.
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content_tags.findings[5]
findingGrowing correlation of a hippocampal neuron's firing across successive time points within an episode, built up over repetitions, predicts later recall of that episode.
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content_tags.findings[6]
findingSingle hippocampal neurons distinguished new from old stimuli after a single trial, independently of whether spatial position was recalled.
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content_tags.findings[7]
findingDeep-brain stimulation of the entorhinal white matter during learning enhances later recall, whereas stimulation of the hippocampus itself does not.
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content_tags.findings[8]
findingMTL neurons respond to a concept across radically different images and even its written name
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content_tags.findings[9]
findingthe invariance holds across sensory modality - image, audio, written word
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content_tags.findings[10]
findingselective responses are late, 300-500 ms, and longer than those seen in animal studies
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content_tags.findings[11]
findinga neuron fires for its concept only when the subject reports recognising it, even at 33 ms exposure
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content_tags.findings[12]
findingimagining a stimulus recruits the same neuron as seeing it
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content_tags.findings[13]
findingsubjects steered a display by modulating two independently selective neurons, overriding the visual input
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content_tags.findings[14]
findinghippocampal and entorhinal neurons reactivate before a spontaneous report of recall; amygdala and frontal cortex do not
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content_tags.findings[15]
findingthe reactivation was visible in a single free-recall trial in a single neuron
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content_tags.findings[16]
findingnew selective responses to experimenters formed over hours or days
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
content_tags.findings[17]
findingseveral rodent cell types - grid, border, head-direction, time - have not yet been characterised in humans
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
content_tags.findings[18]
quantity300 msec - 500 msec — typical latency range of selective, invariant MTL single-neuron responses
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
content_tags.quantities[0]
quantity33 to 256 msec — range of image display durations used to dissociate conscious recognition from stimulus presence
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
content_tags.quantities[1]
quantity3–8Hz — frequency band of the theta LFP oscillation implicated in human memory
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
content_tags.quantities[2]
quantity30–100 Hz — frequency band of the gamma oscillation linked to the recall-predicting theta amplitude
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
content_tags.quantities[3]
quantity100 images (50 old and 50 new stimuli) — size and composition of the recognition-memory test set in the spike-theta encoding study
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
content_tags.quantities[4]
quantity7 out of 8 — trials on which one example subject successfully faded the target actor's image by controlling neuronal firing
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
content_tags.quantities[5]
quantityless than 100 — number of neurons that can currently be recorded simultaneously in a human depth-electrode setup
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
content_tags.quantities[6]
quantity300 to 500 ms — latency of selective invariant responses
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
content_tags.quantities[7]
quantity33 to 256 ms — the display-time range over which recognition gates the response
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
content_tags.quantities[8]
quantity3 to 8 Hz theta — the oscillation predicting encoding success
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
content_tags.quantities[9]
quantityfewer than 100 neurons simultaneously — the ceiling of the human recording setup
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
content_tags.quantities[10]
quantityabout 1 mm — the precision to which an electrode bundle can be localised
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
content_tags.quantities[11]
variabledisplay time (independent)
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content_tags.variables[0]
variablefiring rate (dependent)
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
content_tags.variables[1]
variablespike-field coherence (dependent)
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
content_tags.variables[2]
variablesubsequently remembered versus forgotten
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
content_tags.variables[4]
definitionEpisodic memory
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
content_tags.definitions[0]
definitionMedial temporal lobe (MTL)
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
content_tags.definitions[1]
definitionSpikes
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content_tags.definitions[2]
definitionLocal field potentials (LFPs)
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content_tags.definitions[3]
definitionRecollection vs. familiarity
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content_tags.definitions[4]
definitioninvariant response
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content_tags.definitions[5]
definitiondeclarative memory
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
content_tags.definitions[6]
definitionspike sorting
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content_tags.definitions[7]
key-termsmedial temporal lobe, episodic memory, declarative memory, invariant, conscious perception, concept, place cells, grid cells, hippocampus, entorhinal, perirhinal, parahippocampal, amygdala, theta, local field potentials, spike sorting, free recall, recollection, familiarity, sparse
Statistics — cross-field join keys
field-invariant statistical terms, used in their statistical sense (gated on a number / symbol / test). A p-value or a standard deviation means the SAME thing in physics, biology, psychology and sociology — so these are the strongest cross-field join keys. Grounded verbatim.
spike-field coherence
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
content_tags.statistics[0]
Second readings
a facet read a second time, independently, from its own sentence — and whether the two readings agree
claim typeexistence — a second reading reaching the same value; recorded: existence
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
alternatives.claim_type
methodnarrative review of intracranial single-neuron recordings in epilepsy patients implanted for clinical reasons — a second reading DIFFERING from the recorded value; recorded: review
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
alternatives.method
phenomenonconcept-level coding in the human medial temporal lobe — a second reading DIFFERING from the recorded value; recorded: single-neuron coding in the human medial temporal lobe during perception and episodic memory
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
alternatives.phenomenon

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.

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