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Prefrontal cortex encodes value pop-out in visual search

Recent evidence demonstrates that long-term object value association can enhance visual search efficiency, a phenomenon known as value pop-out. However, the neural mechanism underlying this effect is not fully understood. Given the known role of the ventrolateral prefrontal cortex (vlPFC) in visual...

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Detalles Bibliográficos
Autores principales: Abbaszadeh, Mojtaba, Panjehpour, Armin, Amin Alemohammad, Seyyed Mohammad, Ghavampour, Ali, Ghazizadeh, Ali
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10481287/
https://www.ncbi.nlm.nih.gov/pubmed/37680488
http://dx.doi.org/10.1016/j.isci.2023.107521
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author Abbaszadeh, Mojtaba
Panjehpour, Armin
Amin Alemohammad, Seyyed Mohammad
Ghavampour, Ali
Ghazizadeh, Ali
author_facet Abbaszadeh, Mojtaba
Panjehpour, Armin
Amin Alemohammad, Seyyed Mohammad
Ghavampour, Ali
Ghazizadeh, Ali
author_sort Abbaszadeh, Mojtaba
collection PubMed
description Recent evidence demonstrates that long-term object value association can enhance visual search efficiency, a phenomenon known as value pop-out. However, the neural mechanism underlying this effect is not fully understood. Given the known role of the ventrolateral prefrontal cortex (vlPFC) in visual search and value memory, we recorded its single-unit activity (n = 526) in two macaque monkeys while they engaged in the value-driven search. Monkeys had to determine whether a high-value target was present within a variable number of low-value objects. Differential neural firing, as well as gamma-band power, indicated the presence of a target within ∼150ms of display onset. Notably, this differential activity was negatively correlated with search time and had reduced set-size dependence during efficient search. On the other hand, neural firing and its variability were higher in inefficient search. These findings implicate vlPFC in rapid detection of valuable targets which would be a crucial skill in competitive environments.
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spelling pubmed-104812872023-09-07 Prefrontal cortex encodes value pop-out in visual search Abbaszadeh, Mojtaba Panjehpour, Armin Amin Alemohammad, Seyyed Mohammad Ghavampour, Ali Ghazizadeh, Ali iScience Article Recent evidence demonstrates that long-term object value association can enhance visual search efficiency, a phenomenon known as value pop-out. However, the neural mechanism underlying this effect is not fully understood. Given the known role of the ventrolateral prefrontal cortex (vlPFC) in visual search and value memory, we recorded its single-unit activity (n = 526) in two macaque monkeys while they engaged in the value-driven search. Monkeys had to determine whether a high-value target was present within a variable number of low-value objects. Differential neural firing, as well as gamma-band power, indicated the presence of a target within ∼150ms of display onset. Notably, this differential activity was negatively correlated with search time and had reduced set-size dependence during efficient search. On the other hand, neural firing and its variability were higher in inefficient search. These findings implicate vlPFC in rapid detection of valuable targets which would be a crucial skill in competitive environments. Elsevier 2023-08-03 /pmc/articles/PMC10481287/ /pubmed/37680488 http://dx.doi.org/10.1016/j.isci.2023.107521 Text en © 2023 The Author(s) https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Article
Abbaszadeh, Mojtaba
Panjehpour, Armin
Amin Alemohammad, Seyyed Mohammad
Ghavampour, Ali
Ghazizadeh, Ali
Prefrontal cortex encodes value pop-out in visual search
title Prefrontal cortex encodes value pop-out in visual search
title_full Prefrontal cortex encodes value pop-out in visual search
title_fullStr Prefrontal cortex encodes value pop-out in visual search
title_full_unstemmed Prefrontal cortex encodes value pop-out in visual search
title_short Prefrontal cortex encodes value pop-out in visual search
title_sort prefrontal cortex encodes value pop-out in visual search
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10481287/
https://www.ncbi.nlm.nih.gov/pubmed/37680488
http://dx.doi.org/10.1016/j.isci.2023.107521
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