Pre-stimulus pattern of activity in the fusiform face area predicts face percepts during binocular rivalry
Visual input is ambiguous, yet conscious experience is unambiguous. In binocular rivalry the two eyes receive conflicting images, but only one of them is consciously perceived at a time. Here we search for the neural sites of the competitive interactions underlying this phenomenon by testing whether...
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| Format: | Article |
| Language: | en_US |
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Elsevier
2016
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| Online Access: | http://hdl.handle.net/1721.1/102469 https://orcid.org/0000-0003-3853-7885 |
| _version_ | 1811082344199618560 |
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| author | Hsieh, Po-Jang Colas, Jason T. Kanwisher, Nancy |
| author2 | Massachusetts Institute of Technology. Department of Brain and Cognitive Sciences |
| author_facet | Massachusetts Institute of Technology. Department of Brain and Cognitive Sciences Hsieh, Po-Jang Colas, Jason T. Kanwisher, Nancy |
| author_sort | Hsieh, Po-Jang |
| collection | MIT |
| description | Visual input is ambiguous, yet conscious experience is unambiguous. In binocular rivalry the two eyes receive conflicting images, but only one of them is consciously perceived at a time. Here we search for the neural sites of the competitive interactions underlying this phenomenon by testing whether neural pattern activity occurring before stimulus presentation can predict the initial dominant percept in binocular rivalry and, if so, where in the brain such predictive activity is found. Subjects were scanned while viewing an image of a face in one eye and an image of a house in the other eye with anaglyph glasses. The rivalrous stimulus was presented briefly for each trial, and the subject indicated which of the two images he or she preferentially perceived. Our results show that BOLD fMRI multivariate pattern activity in the fusiform face area (FFA) before the stimulus is presented predicts which of the two images will be dominant, suggesting that higher extrastriate areas, such as the FFA, are not only correlated with, but may also be involved in determining the initial dominant percept in binocular rivalry. Furthermore, by examining pattern activity before and after trial onset, we found that pre-trial activity in the FFA for the rivalrous face trials is no more similar to the post-trial activity for the non-rivalrous face trials than to that for the non-rivalrous house trials, indicating a dissociation between neural pattern information, which predicts a given state of awareness, and mean responses, which reflect the state of awareness ultimately achieved. |
| first_indexed | 2024-09-23T12:01:38Z |
| format | Article |
| id | mit-1721.1/102469 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T12:01:38Z |
| publishDate | 2016 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | mit-1721.1/1024692022-10-01T07:43:40Z Pre-stimulus pattern of activity in the fusiform face area predicts face percepts during binocular rivalry Hsieh, Po-Jang Colas, Jason T. Kanwisher, Nancy Massachusetts Institute of Technology. Department of Brain and Cognitive Sciences McGovern Institute for Brain Research at MIT Kanwisher, Nancy Kanwisher, Nancy Hsieh, Po-Jang Colas, Jason T. Visual input is ambiguous, yet conscious experience is unambiguous. In binocular rivalry the two eyes receive conflicting images, but only one of them is consciously perceived at a time. Here we search for the neural sites of the competitive interactions underlying this phenomenon by testing whether neural pattern activity occurring before stimulus presentation can predict the initial dominant percept in binocular rivalry and, if so, where in the brain such predictive activity is found. Subjects were scanned while viewing an image of a face in one eye and an image of a house in the other eye with anaglyph glasses. The rivalrous stimulus was presented briefly for each trial, and the subject indicated which of the two images he or she preferentially perceived. Our results show that BOLD fMRI multivariate pattern activity in the fusiform face area (FFA) before the stimulus is presented predicts which of the two images will be dominant, suggesting that higher extrastriate areas, such as the FFA, are not only correlated with, but may also be involved in determining the initial dominant percept in binocular rivalry. Furthermore, by examining pattern activity before and after trial onset, we found that pre-trial activity in the FFA for the rivalrous face trials is no more similar to the post-trial activity for the non-rivalrous face trials than to that for the non-rivalrous house trials, indicating a dissociation between neural pattern information, which predicts a given state of awareness, and mean responses, which reflect the state of awareness ultimately achieved. 2016-05-12T15:22:08Z 2016-05-12T15:22:08Z 2011-09 2011-09 Article http://purl.org/eprint/type/JournalArticle 00283932 http://hdl.handle.net/1721.1/102469 Hsieh, P.-J., J.T. Colas, and N.G. Kanwisher. “Pre-Stimulus Pattern of Activity in the Fusiform Face Area Predicts Face Percepts During Binocular Rivalry.” Neuropsychologia 50, no. 4 (March 2012): 522–529. https://orcid.org/0000-0003-3853-7885 en_US http://dx.doi.org/10.1016/j.neuropsychologia.2011.09.019 Neuropsychologia Creative Commons Attribution-NonCommercial-NoDerivs License http://creativecommons.org/licenses/by-nc-nd/4.0/ application/pdf Elsevier Prof. Kanwisher via Courtney Crummett |
| spellingShingle | Hsieh, Po-Jang Colas, Jason T. Kanwisher, Nancy Pre-stimulus pattern of activity in the fusiform face area predicts face percepts during binocular rivalry |
| title | Pre-stimulus pattern of activity in the fusiform face area predicts face percepts during binocular rivalry |
| title_full | Pre-stimulus pattern of activity in the fusiform face area predicts face percepts during binocular rivalry |
| title_fullStr | Pre-stimulus pattern of activity in the fusiform face area predicts face percepts during binocular rivalry |
| title_full_unstemmed | Pre-stimulus pattern of activity in the fusiform face area predicts face percepts during binocular rivalry |
| title_short | Pre-stimulus pattern of activity in the fusiform face area predicts face percepts during binocular rivalry |
| title_sort | pre stimulus pattern of activity in the fusiform face area predicts face percepts during binocular rivalry |
| url | http://hdl.handle.net/1721.1/102469 https://orcid.org/0000-0003-3853-7885 |
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