Visual adaptation and 7T fMRI reveal facial identity processing in the human brain under shallow interocular suppression
Face identity is represented at a high level of the visual hierarchy. Whether the human brain can process facial identity information in the absence of visual awareness remains unclear. In this study, we investigated potential face identity representation through face-identity adaptation with the ad...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-12-01
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| Series: | NeuroImage |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1053811921008958 |
| _version_ | 1819041768241364992 |
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| author | Runnan Cao Chencan Qian Shiwen Ren Zhifen He Sheng He Peng Zhang |
| author_facet | Runnan Cao Chencan Qian Shiwen Ren Zhifen He Sheng He Peng Zhang |
| author_sort | Runnan Cao |
| collection | DOAJ |
| description | Face identity is represented at a high level of the visual hierarchy. Whether the human brain can process facial identity information in the absence of visual awareness remains unclear. In this study, we investigated potential face identity representation through face-identity adaptation with the adapting faces interocularly suppressed by Continuous Flash Suppression (CFS) noise, a modified binocular rivalry paradigm. The strength of interocular suppression was manipulated by varying the contrast of CFS noise. While obeservers reported the face images subjectively unperceived and the face identity objectively unrecognizable, a significant face identity aftereffect was observed under low but not high contrast CFS noise. In addition, the identity of face images under shallow interocular suppression can be decoded from multi-voxel patterns in the right fusiform face area (FFA) obtained with high-resolution 7T fMRI. Thus the comined evidence from visual adaptation and 7T fMRI suggest that face identity can be represented in the human brain without explicit perceptual recognition. The processing of interocularly suppressed faces could occur at different levels depending on how “deep” the information is suppressed. |
| first_indexed | 2024-12-21T09:30:14Z |
| format | Article |
| id | doaj.art-3adc371f24a2475abe6b110ade946501 |
| institution | Directory Open Access Journal |
| issn | 1095-9572 |
| language | English |
| last_indexed | 2024-12-21T09:30:14Z |
| publishDate | 2021-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | NeuroImage |
| spelling | doaj.art-3adc371f24a2475abe6b110ade9465012022-12-21T19:08:45ZengElsevierNeuroImage1095-95722021-12-01244118622Visual adaptation and 7T fMRI reveal facial identity processing in the human brain under shallow interocular suppressionRunnan Cao0Chencan Qian1Shiwen Ren2Zhifen He3Sheng He4Peng Zhang5State Key Laboratory of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, ChinaState Key Laboratory of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, ChinaState Key Laboratory of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, ChinaSchool of Ophthalmology and Optometry and Eye Hospital and State Key Laboratory of Ophthalmology, Optometry and Vision Science, Wenzhou Medical University, Wenzhou, Zhejiang 325000, ChinaState Key Laboratory of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China; Department of Psychology, University of Minnesota, Minneapolis, MN 55455, United States; CAS Center for Excellence in Brain Science and Intelligence Technology, Shanghai 200031, China; Corresponding authors at: State Key Laboratory of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.School of Ophthalmology and Optometry and Eye Hospital and State Key Laboratory of Ophthalmology, Optometry and Vision Science, Wenzhou Medical University, Wenzhou, Zhejiang 325000, China; State Key Laboratory of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China; Hefei Comprehensive National Science Center, Institute of Artificial Intelligence, Hefei 230026, China; University of Chinese Academy of Sciences, Beijing 100049, China; Corresponding authors at: State Key Laboratory of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.Face identity is represented at a high level of the visual hierarchy. Whether the human brain can process facial identity information in the absence of visual awareness remains unclear. In this study, we investigated potential face identity representation through face-identity adaptation with the adapting faces interocularly suppressed by Continuous Flash Suppression (CFS) noise, a modified binocular rivalry paradigm. The strength of interocular suppression was manipulated by varying the contrast of CFS noise. While obeservers reported the face images subjectively unperceived and the face identity objectively unrecognizable, a significant face identity aftereffect was observed under low but not high contrast CFS noise. In addition, the identity of face images under shallow interocular suppression can be decoded from multi-voxel patterns in the right fusiform face area (FFA) obtained with high-resolution 7T fMRI. Thus the comined evidence from visual adaptation and 7T fMRI suggest that face identity can be represented in the human brain without explicit perceptual recognition. The processing of interocularly suppressed faces could occur at different levels depending on how “deep” the information is suppressed.http://www.sciencedirect.com/science/article/pii/S1053811921008958Face-identity adaptation7T fMRIContinuous flash suppressionConsciousness |
| spellingShingle | Runnan Cao Chencan Qian Shiwen Ren Zhifen He Sheng He Peng Zhang Visual adaptation and 7T fMRI reveal facial identity processing in the human brain under shallow interocular suppression NeuroImage Face-identity adaptation 7T fMRI Continuous flash suppression Consciousness |
| title | Visual adaptation and 7T fMRI reveal facial identity processing in the human brain under shallow interocular suppression |
| title_full | Visual adaptation and 7T fMRI reveal facial identity processing in the human brain under shallow interocular suppression |
| title_fullStr | Visual adaptation and 7T fMRI reveal facial identity processing in the human brain under shallow interocular suppression |
| title_full_unstemmed | Visual adaptation and 7T fMRI reveal facial identity processing in the human brain under shallow interocular suppression |
| title_short | Visual adaptation and 7T fMRI reveal facial identity processing in the human brain under shallow interocular suppression |
| title_sort | visual adaptation and 7t fmri reveal facial identity processing in the human brain under shallow interocular suppression |
| topic | Face-identity adaptation 7T fMRI Continuous flash suppression Consciousness |
| url | http://www.sciencedirect.com/science/article/pii/S1053811921008958 |
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