Auditory temporal masking: an electrophysiological study of single neurons in the cat's cochlear nucleus and inferior colliculus

Auditory temporal masking: an electrophysiological study of single neurons in the cat's cochlear nucleus and inferior colliculus Watanabe Simada

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Auditory temporal masking: an electrophysiological study of single neurons in the cat's cochlear nucleus and inferior colliculus 1971 The Japanese Journal of Physiology 10.2170/jjphysiol.21.537 watanabe1971-auditory-temporal-masking-an-elect watanabe1971-auditory-temporal-masking-an-elect.txt, the project's staged copy 90487c7cd580d6642a9838f99a6c9610a8d7e57c open-access auditory-neurophysiology

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0 spans located by searching the stored text for the quote's exact words, allowing any whitespace between them mechanism Quotation withheld because this record is not cleared for redistribution. auditory temporal masking Quotation withheld because this record is not cleared for redistribution. electrophysiology electrophysiology Quotation withheld because this record is not cleared for redistribution. mechanisms A faint probe tone drives an abnormally long response latency in collicular neurons, so the probe's discharge arrives at or after the discharge evoked by the following noise burst and is absorbed into it, which produces backward masking Quotation withheld because this record is not cleared for redistribution. Only a small number of collicular units showed backward masking, so the effect rests on few cells. Quotation withheld because this record is not cleared for redistribution. Recordings were made under anesthesia and restraint; the authors say further work in unanesthetized, unrestrained animals is needed for the higher auditory centres. Quotation withheld because this record is not cleared for redistribution. A possible fourth mechanism (feedback inhibition from higher levels) could not be demonstrated with the present methods. Quotation withheld because this record is not cleared for redistribution. both stimulus conditions held constant while the masking measurement was made eliminates: a change in the stimulus itself explaining the change in masking · outcome (stated by the tagger, no quotation): held Quotation withheld because this record is not cleared for redistribution. masking measured as the difference in probe-tone threshold with and without the noise burst, at each delay eliminates: the probe threshold itself drifting - the with/without difference at the same delay cancels anything common to both · outcome (stated by the tagger, no quotation): held Quotation withheld because this record is not cleared for redistribution. simultaneous masking simultaneous masking Quotation withheld because this record is not cleared for redistribution. temporal masking temporal masking Quotation withheld because this record is not cleared for redistribution. backward masking backward masking Quotation withheld because this record is not cleared for redistribution. cochlear nucleus cochlear nucleus Quotation withheld because this record is not cleared for redistribution. THE DISTINCTION IS PSYCHOLOGICAL AND THE ARGUMENT IS ANATOMICAL. `From the psychological point of view two kinds of auditory masking are known, that is, simultaneous and temporal masking` - a split made by psychophysics, which this paper then tests by asking where in the cat's auditory pathway each one appears. A behavioural taxonomy checked against anatomy, which is the move Carlesimo2004 makes for priming thirty-three years later and mcmahon-olson2007 makes for repetition suppression Quotation withheld because this record is not cleared for redistribution. AND THE LOCATION IS ESTABLISHED BY AN ABSENCE: `Quotation withheld` Nothing was found at the first relay, therefore the mechanism is above it. A null result at one recording site doing positive work - which only holds because the same preparation DID show forward masking there, so the absence is not a failure of the method Quotation withheld because this record is not cleared for redistribution. IT IS THE PHYSIOLOGY OF marcel1983's INSTRUMENT, AND NEITHER CITES THE OTHER. marcel1983 uses backward masking to render a prime unreportable and shows that semantic access survives it; this paper, twelve years earlier and in cats, asks WHERE backward masking happens and answers `not in the cochlear nucleus`. One paper uses the tool, the other locates it. The corpus holds both, and the pairing is only visible because they sit side by side - the sixth such pair found tonight Quotation withheld because this record is not cleared for redistribution. builds-on → ELLIOT (1962a) Quotation withheld because this record is not cleared for redistribution. extends → ELLIOTT (1962a, b) and PICKETT (1959) Quotation withheld because this record is not cleared for redistribution. histogram histogram Quotation withheld because this record is not cleared for redistribution. Forward masking weakened as the interval between the noise burst and the probe tone grew at both recording sites, but the decline was more abrupt in the inferior colliculus than in the cochlear nucleus. Quotation withheld because this record is not cleared for redistribution. Backward masking in the inferior colliculus took three forms: "on" neurons with a long latency to the probe tone (6 units), neurons inhibited by the noise burst (3 units), and "off" neurons (2 units). Quotation withheld because this record is not cleared for redistribution. A unit produced backward masking only when its latency to the probe tone exceeded the 20 msec at which the noise burst's own response arrived, so units responding within 20 msec showed none. Quotation withheld because this record is not cleared for redistribution. The single-neuron curves relating amount of masking to masking interval followed the same trends as the published psychophysical masking data of Elliott and Pickett, although individual neurons differed from one another. Quotation withheld because this record is not cleared for redistribution. Only a small proportion of inferior collicular units showed backward masking at all. Quotation withheld because this record is not cleared for redistribution. Fast-adapting neurons form the overwhelming majority of neurons in the inferior colliculus. Quotation withheld because this record is not cleared for redistribution. "off" type neuron "off" type neuron Quotation withheld because this record is not cleared for redistribution. masking interval masking interval Quotation withheld because this record is not cleared for redistribution. amount of masking amount of masking Quotation withheld because this record is not cleared for redistribution. stimulus intensity in dB stimulus intensity in dB Quotation withheld because this record is not cleared for redistribution. 36 — number of inferior collicular neurons tested for backward masking, of which 11 showed it in three modes Quotation withheld because this record is not cleared for redistribution. 6 units; 3 units; 2 units — how the 11 backward-masking units divided across the long-latency "on", noise-inhibited, and "off" modes Quotation withheld because this record is not cleared for redistribution. more than 20msec / 10msec — the unit's response latency to the probe tone inside the backward-masking region versus its latency to the noise burst Quotation withheld because this record is not cleared for redistribution. 14.5msec at-30dB — measured response latency at 3,500 Hz at the highest of four tested intensities, the shortest of the reported latency shifts Quotation withheld because this record is not cleared for redistribution.

The full text of this article is not redistributable, so it is not included here. The evidence sentences are withheld with it; the tag layer and its grounding status remain. The article itself is at https://doi.org/10.2170/jjphysiol.21.537.