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Single-exposure visual memory judgments are reflected in inferotemporal cortex

Our visual memory percepts of whether we have encountered specific objects or scenes before are hypothesized to manifest as decrements in neural responses in inferotemporal cortex (IT) with stimulus repetition. To evaluate this proposal, we recorded IT neural responses as two monkeys performed a sin...

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Detalles Bibliográficos
Autores principales: Meyer, Travis, Rust, Nicole C
Formato: Online Artículo Texto
Lenguaje:English
Publicado: eLife Sciences Publications, Ltd 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5843407/
https://www.ncbi.nlm.nih.gov/pubmed/29517485
http://dx.doi.org/10.7554/eLife.32259
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author Meyer, Travis
Rust, Nicole C
author_facet Meyer, Travis
Rust, Nicole C
author_sort Meyer, Travis
collection PubMed
description Our visual memory percepts of whether we have encountered specific objects or scenes before are hypothesized to manifest as decrements in neural responses in inferotemporal cortex (IT) with stimulus repetition. To evaluate this proposal, we recorded IT neural responses as two monkeys performed a single-exposure visual memory task designed to measure the rates of forgetting with time. We found that a weighted linear read-out of IT was a better predictor of the monkeys’ forgetting rates and reaction time patterns than a strict instantiation of the repetition suppression hypothesis, expressed as a total spike count scheme. Behavioral predictions could be attributed to visual memory signals that were reflected as repetition suppression and were intermingled with visual selectivity, but only when combined across the most sensitive neurons.
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spelling pubmed-58434072018-03-09 Single-exposure visual memory judgments are reflected in inferotemporal cortex Meyer, Travis Rust, Nicole C eLife Neuroscience Our visual memory percepts of whether we have encountered specific objects or scenes before are hypothesized to manifest as decrements in neural responses in inferotemporal cortex (IT) with stimulus repetition. To evaluate this proposal, we recorded IT neural responses as two monkeys performed a single-exposure visual memory task designed to measure the rates of forgetting with time. We found that a weighted linear read-out of IT was a better predictor of the monkeys’ forgetting rates and reaction time patterns than a strict instantiation of the repetition suppression hypothesis, expressed as a total spike count scheme. Behavioral predictions could be attributed to visual memory signals that were reflected as repetition suppression and were intermingled with visual selectivity, but only when combined across the most sensitive neurons. eLife Sciences Publications, Ltd 2018-03-08 /pmc/articles/PMC5843407/ /pubmed/29517485 http://dx.doi.org/10.7554/eLife.32259 Text en © 2018, Meyer et al http://creativecommons.org/licenses/by/4.0/ http://creativecommons.org/licenses/by/4.0/This article is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use and redistribution provided that the original author and source are credited.
spellingShingle Neuroscience
Meyer, Travis
Rust, Nicole C
Single-exposure visual memory judgments are reflected in inferotemporal cortex
title Single-exposure visual memory judgments are reflected in inferotemporal cortex
title_full Single-exposure visual memory judgments are reflected in inferotemporal cortex
title_fullStr Single-exposure visual memory judgments are reflected in inferotemporal cortex
title_full_unstemmed Single-exposure visual memory judgments are reflected in inferotemporal cortex
title_short Single-exposure visual memory judgments are reflected in inferotemporal cortex
title_sort single-exposure visual memory judgments are reflected in inferotemporal cortex
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5843407/
https://www.ncbi.nlm.nih.gov/pubmed/29517485
http://dx.doi.org/10.7554/eLife.32259
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