Differences in category information processing between areas TEO and TE of the macaque
Object categorization is a fundamental visual function, via which primates group items based on perceptual similarity. Neurons that respond to a class of complex objects, such as faces, can be found in inferior temporal cortex of macaque monkeys, comprising areas TEO and TE. The ability of monkeys t...
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Frontiers Media S.A.
2025-01-01
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| Series: | Frontiers in Behavioral Neuroscience |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fnbeh.2024.1449097/full |
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| author | Masaumi Shimizu Shun Katakami Masato Okada Yasuko Sugase-Miyamoto Kazuko Hayashi Kazuko Hayashi Keiji Matsuda Kenichiro Miura Kenichiro Miura Mark A. G. Eldridge Richard C. Saunders Barry J. Richmond Narihisa Matsumoto |
| author_facet | Masaumi Shimizu Shun Katakami Masato Okada Yasuko Sugase-Miyamoto Kazuko Hayashi Kazuko Hayashi Keiji Matsuda Kenichiro Miura Kenichiro Miura Mark A. G. Eldridge Richard C. Saunders Barry J. Richmond Narihisa Matsumoto |
| author_sort | Masaumi Shimizu |
| collection | DOAJ |
| description | Object categorization is a fundamental visual function, via which primates group items based on perceptual similarity. Neurons that respond to a class of complex objects, such as faces, can be found in inferior temporal cortex of macaque monkeys, comprising areas TEO and TE. The ability of monkeys to categorize cat/dog images is greatly impaired when both TE and TEO are removed, but is only modestly impaired if either region is left intact. This suggests that both TE and TEO can support object categorization. We investigated what differences exist in category information processing between areas TEO and TE. For cat and dog stimulus images, we found that category decoding performance increased during the initial phase of a stimulus presentation, then remained stable in area TEO for the duration of the presentation in a passive fixation task. In area TE, category decoding performance continued to improve into later in the time window than in TEO. Furthermore, we found that, after cat/dog category training, area TE neuronal populations encode cat and dog category information more strongly than do TEO neurons even in a fixation task (Mann-Whitney U-test, p < 0.05). Together, our results suggest that area TEO processes category information without changing its representation, whereas the category information representation in area TE evolves over time (both within a trial and across category training sessions), indicating that responses in TE may be influenced by top-down feedback. |
| format | Article |
| id | doaj-art-5647b636058c4971b752eb68f3cf08ab |
| institution | Kabale University |
| issn | 1662-5153 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Behavioral Neuroscience |
| spelling | doaj-art-5647b636058c4971b752eb68f3cf08ab2025-01-29T06:46:00ZengFrontiers Media S.A.Frontiers in Behavioral Neuroscience1662-51532025-01-011810.3389/fnbeh.2024.14490971449097Differences in category information processing between areas TEO and TE of the macaqueMasaumi Shimizu0Shun Katakami1Masato Okada2Yasuko Sugase-Miyamoto3Kazuko Hayashi4Kazuko Hayashi5Keiji Matsuda6Kenichiro Miura7Kenichiro Miura8Mark A. G. Eldridge9Richard C. Saunders10Barry J. Richmond11Narihisa Matsumoto12Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, JapanGraduate School of Frontier Sciences, The University of Tokyo, Kashiwa, JapanGraduate School of Frontier Sciences, The University of Tokyo, Kashiwa, JapanHuman Informatics and Interaction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, JapanHuman Informatics and Interaction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, JapanResearch Fellow of Japan Society for the Promotion of Science, Chiyoda, Tokyo, JapanHuman Informatics and Interaction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, JapanDepartment of Pathlogy of Mental Diseases, National Center of Neurology and Psychiatry, National Institute of Mental Health, Kodaira, Tokyo, JapanSection of Brain Function Information, National Institute for Physiological Sciences, Okazaki, JapanLaboratory of Neuropsychology, National Institute of Mental Health, Bethesda, MD, United StatesLaboratory of Neuropsychology, National Institute of Mental Health, Bethesda, MD, United StatesLaboratory of Neuropsychology, National Institute of Mental Health, Bethesda, MD, United StatesHuman Informatics and Interaction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, JapanObject categorization is a fundamental visual function, via which primates group items based on perceptual similarity. Neurons that respond to a class of complex objects, such as faces, can be found in inferior temporal cortex of macaque monkeys, comprising areas TEO and TE. The ability of monkeys to categorize cat/dog images is greatly impaired when both TE and TEO are removed, but is only modestly impaired if either region is left intact. This suggests that both TE and TEO can support object categorization. We investigated what differences exist in category information processing between areas TEO and TE. For cat and dog stimulus images, we found that category decoding performance increased during the initial phase of a stimulus presentation, then remained stable in area TEO for the duration of the presentation in a passive fixation task. In area TE, category decoding performance continued to improve into later in the time window than in TEO. Furthermore, we found that, after cat/dog category training, area TE neuronal populations encode cat and dog category information more strongly than do TEO neurons even in a fixation task (Mann-Whitney U-test, p < 0.05). Together, our results suggest that area TEO processes category information without changing its representation, whereas the category information representation in area TE evolves over time (both within a trial and across category training sessions), indicating that responses in TE may be influenced by top-down feedback.https://www.frontiersin.org/articles/10.3389/fnbeh.2024.1449097/fullvisual categorizationcategory information processinginferior temporal cortexlogistic regressionlinear discrimination analysis |
| spellingShingle | Masaumi Shimizu Shun Katakami Masato Okada Yasuko Sugase-Miyamoto Kazuko Hayashi Kazuko Hayashi Keiji Matsuda Kenichiro Miura Kenichiro Miura Mark A. G. Eldridge Richard C. Saunders Barry J. Richmond Narihisa Matsumoto Differences in category information processing between areas TEO and TE of the macaque Frontiers in Behavioral Neuroscience visual categorization category information processing inferior temporal cortex logistic regression linear discrimination analysis |
| title | Differences in category information processing between areas TEO and TE of the macaque |
| title_full | Differences in category information processing between areas TEO and TE of the macaque |
| title_fullStr | Differences in category information processing between areas TEO and TE of the macaque |
| title_full_unstemmed | Differences in category information processing between areas TEO and TE of the macaque |
| title_short | Differences in category information processing between areas TEO and TE of the macaque |
| title_sort | differences in category information processing between areas teo and te of the macaque |
| topic | visual categorization category information processing inferior temporal cortex logistic regression linear discrimination analysis |
| url | https://www.frontiersin.org/articles/10.3389/fnbeh.2024.1449097/full |
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