Categorization learning induced changes in action representations in the macaque STS
Neuroimaging and single cell recordings have demonstrated the presence of STS body category-selective regions (body patches) containing neurons responding to presentation of static bodies and body parts. To date, it remains unclear if these body patches and additional STS regions respond during obse...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-01-01
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| Series: | NeuroImage |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1053811922009016 |
| _version_ | 1828071558990528512 |
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| author | Ding Cui Lotte Sypré Mathias Vissers Saloni Sharma Rufin Vogels Koen Nelissen |
| author_facet | Ding Cui Lotte Sypré Mathias Vissers Saloni Sharma Rufin Vogels Koen Nelissen |
| author_sort | Ding Cui |
| collection | DOAJ |
| description | Neuroimaging and single cell recordings have demonstrated the presence of STS body category-selective regions (body patches) containing neurons responding to presentation of static bodies and body parts. To date, it remains unclear if these body patches and additional STS regions respond during observation of different categories of dynamic actions and to what extent categorization learning influences representations of observed actions in the STS. In the present study, we trained monkeys to discriminate videos depicting three different actions categories (grasping, touching and reaching) with a forced-choice action categorization task. Before and after categorization training, we performed fMRI recordings while monkeys passively observed the same action videos. At the behavioral level, after categorization training, monkeys generalized to untrained action exemplars, in particular for grasping actions. Before training, uni- and/or multivariate fMRI analyses suggest a broad representation of dynamic action categories in particular in posterior and middle STS. Univariate analysis further suggested action category specific training effects in middle and anterior body patches, face patch ML and posterior STS region MT and FST. Overall, our fMRI experiments suggest a widespread representation of observed dynamic bodily actions in the STS that can be modulated by visual learning, supporting its proposed role in action recognition. |
| first_indexed | 2024-04-11T00:56:00Z |
| format | Article |
| id | doaj.art-e0785f29d42045f1934bdf02326d0a4b |
| institution | Directory Open Access Journal |
| issn | 1095-9572 |
| language | English |
| last_indexed | 2024-04-11T00:56:00Z |
| publishDate | 2023-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | NeuroImage |
| spelling | doaj.art-e0785f29d42045f1934bdf02326d0a4b2023-01-05T06:23:23ZengElsevierNeuroImage1095-95722023-01-01265119780Categorization learning induced changes in action representations in the macaque STSDing Cui0Lotte Sypré1Mathias Vissers2Saloni Sharma3Rufin Vogels4Koen Nelissen5Laboratory for Neuro- and Psychophysiology, Department of Neurosciences, KU Leuven, O&N2 Campus Gasthuisberg, Herestraat 49, bus 1021, 3000 Leuven, Belgium; Leuven Brain Institute, KU Leuven, 3000 Leuven, BelgiumLaboratory for Neuro- and Psychophysiology, Department of Neurosciences, KU Leuven, O&N2 Campus Gasthuisberg, Herestraat 49, bus 1021, 3000 Leuven, Belgium; Leuven Brain Institute, KU Leuven, 3000 Leuven, BelgiumLaboratory for Neuro- and Psychophysiology, Department of Neurosciences, KU Leuven, O&N2 Campus Gasthuisberg, Herestraat 49, bus 1021, 3000 Leuven, BelgiumDepartment of Neurobiology, Harvard Medical School, MA 02115, United States of AmericaLaboratory for Neuro- and Psychophysiology, Department of Neurosciences, KU Leuven, O&N2 Campus Gasthuisberg, Herestraat 49, bus 1021, 3000 Leuven, Belgium; Leuven Brain Institute, KU Leuven, 3000 Leuven, BelgiumLaboratory for Neuro- and Psychophysiology, Department of Neurosciences, KU Leuven, O&N2 Campus Gasthuisberg, Herestraat 49, bus 1021, 3000 Leuven, Belgium; Leuven Brain Institute, KU Leuven, 3000 Leuven, Belgium; Corresponding author: Koen Nelissen, Lab for Neuro- & Psychophysiology, Department of Neurosciences, KU Leuven, O&N2 Campus Gasthuisberg, Herestraat 49, bus 1021, 3000 Leuven, Belgium.Neuroimaging and single cell recordings have demonstrated the presence of STS body category-selective regions (body patches) containing neurons responding to presentation of static bodies and body parts. To date, it remains unclear if these body patches and additional STS regions respond during observation of different categories of dynamic actions and to what extent categorization learning influences representations of observed actions in the STS. In the present study, we trained monkeys to discriminate videos depicting three different actions categories (grasping, touching and reaching) with a forced-choice action categorization task. Before and after categorization training, we performed fMRI recordings while monkeys passively observed the same action videos. At the behavioral level, after categorization training, monkeys generalized to untrained action exemplars, in particular for grasping actions. Before training, uni- and/or multivariate fMRI analyses suggest a broad representation of dynamic action categories in particular in posterior and middle STS. Univariate analysis further suggested action category specific training effects in middle and anterior body patches, face patch ML and posterior STS region MT and FST. Overall, our fMRI experiments suggest a widespread representation of observed dynamic bodily actions in the STS that can be modulated by visual learning, supporting its proposed role in action recognition.http://www.sciencedirect.com/science/article/pii/S1053811922009016Action observationCategory learningRhesus macaquefMRIMVPA |
| spellingShingle | Ding Cui Lotte Sypré Mathias Vissers Saloni Sharma Rufin Vogels Koen Nelissen Categorization learning induced changes in action representations in the macaque STS NeuroImage Action observation Category learning Rhesus macaque fMRI MVPA |
| title | Categorization learning induced changes in action representations in the macaque STS |
| title_full | Categorization learning induced changes in action representations in the macaque STS |
| title_fullStr | Categorization learning induced changes in action representations in the macaque STS |
| title_full_unstemmed | Categorization learning induced changes in action representations in the macaque STS |
| title_short | Categorization learning induced changes in action representations in the macaque STS |
| title_sort | categorization learning induced changes in action representations in the macaque sts |
| topic | Action observation Category learning Rhesus macaque fMRI MVPA |
| url | http://www.sciencedirect.com/science/article/pii/S1053811922009016 |
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