Cargando…
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...
Autores principales: | , |
---|---|
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 |
_version_ | 1783305084451422208 |
---|---|
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. |
format | Online Article Text |
id | pubmed-5843407 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | eLife Sciences Publications, Ltd |
record_format | MEDLINE/PubMed |
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 |
work_keys_str_mv | AT meyertravis singleexposurevisualmemoryjudgmentsarereflectedininferotemporalcortex AT rustnicolec singleexposurevisualmemoryjudgmentsarereflectedininferotemporalcortex |