Prefrontal cortex encodes value pop-out in visual search
Summary: 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) i...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-09-01
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| Series: | iScience |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589004223015985 |
| _version_ | 1797732833987395584 |
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| author | Mojtaba Abbaszadeh Armin Panjehpour Seyyed Mohammad Amin Alemohammad Ali Ghavampour Ali Ghazizadeh |
| author_facet | Mojtaba Abbaszadeh Armin Panjehpour Seyyed Mohammad Amin Alemohammad Ali Ghavampour Ali Ghazizadeh |
| author_sort | Mojtaba Abbaszadeh |
| collection | DOAJ |
| description | Summary: 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. |
| first_indexed | 2024-03-12T12:19:16Z |
| format | Article |
| id | doaj.art-01e22bc417724b8d83756450c37608c6 |
| institution | Directory Open Access Journal |
| issn | 2589-0042 |
| language | English |
| last_indexed | 2024-03-12T12:19:16Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | iScience |
| spelling | doaj.art-01e22bc417724b8d83756450c37608c62023-08-30T05:54:35ZengElsevieriScience2589-00422023-09-01269107521Prefrontal cortex encodes value pop-out in visual searchMojtaba Abbaszadeh0Armin Panjehpour1Seyyed Mohammad Amin Alemohammad2Ali Ghavampour3Ali Ghazizadeh4School of Cognitive Sciences, Institute for Research in Fundamental Sciences (IPM), Tehran, IranBio-intelligence Research Unit, Sharif Brain Center, Electrical Engineering Department, Sharif University of Technology, Tehran, IranBio-intelligence Research Unit, Sharif Brain Center, Electrical Engineering Department, Sharif University of Technology, Tehran, Iran; School of Cognitive Sciences, Institute for Research in Fundamental Sciences (IPM), Tehran, IranBio-intelligence Research Unit, Sharif Brain Center, Electrical Engineering Department, Sharif University of Technology, Tehran, IranBio-intelligence Research Unit, Sharif Brain Center, Electrical Engineering Department, Sharif University of Technology, Tehran, Iran; School of Cognitive Sciences, Institute for Research in Fundamental Sciences (IPM), Tehran, Iran; Corresponding authorSummary: 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.http://www.sciencedirect.com/science/article/pii/S2589004223015985Biological sciencesNeuroscienceSensory neuroscience |
| spellingShingle | Mojtaba Abbaszadeh Armin Panjehpour Seyyed Mohammad Amin Alemohammad Ali Ghavampour Ali Ghazizadeh Prefrontal cortex encodes value pop-out in visual search iScience Biological sciences Neuroscience Sensory neuroscience |
| 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 | Biological sciences Neuroscience Sensory neuroscience |
| url | http://www.sciencedirect.com/science/article/pii/S2589004223015985 |
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