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Portraits or people? Distinct representations of face identity in the human visual cortex

(2005) JOURNAL OF COGNITIVE NEUROSCIENCE. 17(7). p.1043-1057
Author
Organization
Abstract
Humans can identify individual faces under different view- viewpoints, even after a single encounter. We determined brain points, regions responsible for processing face identity across view changes after variable delays with several intervening stimuli, using event-related functional magnetic resonance imaging during a long-term repetition priming paradigm. Unfamiliar faces were presented sequentially either in a frontal or three-quarter view. Each face identity was repeated once after an quarter unpredictable lag, with either the same or another viewpoint. Behavioral data showed significant priming in response time, irrespective of view changes. Brain imaging results revealed a reduced response in the lateral occipital and fusiform cortex with face repetition. Bilateral face-selective fusiform areas showed view-sensitive repetition effects, generalizing only from three- quarter to front-views. More medial regions in the left (but not quarter in the right) fusiform showed repetition effects across all types of viewpoint changes. These results reveal that distinct regions within the fusiform cortex hold view- sensitive or view-invariant traces of novel faces, and that face identity is represented in a view-sensitive manner in the functionally defined face-selective areas of both hemispheres. In addition, our finding of a better generalization after exposure to a 3/4-view than to a front-view demonstrates for the first time a neural substrate in the fusiform cortex for the common recognition advantage of three- quarter faces. This pattern provides new insights into the nature of face representation in the human visual system.
Keywords
VIEWPOINT-INVARIANT, UNFAMILIAR FACES, INFERIOR TEMPORAL CORTEX, EVENT-RELATED FMRI, FUSIFORM CORTEX, FUNCTIONAL MRI, RECOGNITION, OBJECT, PERCEPTION, NEURONS

Citation

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MLA
Pourtois, Gilles, S Schwartz, ML Seghier, et al. “Portraits or People? Distinct Representations of Face Identity in the Human Visual Cortex.” JOURNAL OF COGNITIVE NEUROSCIENCE 17.7 (2005): 1043–1057. Print.
APA
Pourtois, G., Schwartz, S., Seghier, M., Lazeyras, F., & Vuilleumier, P. (2005). Portraits or people? Distinct representations of face identity in the human visual cortex. JOURNAL OF COGNITIVE NEUROSCIENCE, 17(7), 1043–1057.
Chicago author-date
Pourtois, Gilles, S Schwartz, ML Seghier, F Lazeyras, and P Vuilleumier. 2005. “Portraits or People? Distinct Representations of Face Identity in the Human Visual Cortex.” Journal of Cognitive Neuroscience 17 (7): 1043–1057.
Chicago author-date (all authors)
Pourtois, Gilles, S Schwartz, ML Seghier, F Lazeyras, and P Vuilleumier. 2005. “Portraits or People? Distinct Representations of Face Identity in the Human Visual Cortex.” Journal of Cognitive Neuroscience 17 (7): 1043–1057.
Vancouver
1.
Pourtois G, Schwartz S, Seghier M, Lazeyras F, Vuilleumier P. Portraits or people? Distinct representations of face identity in the human visual cortex. JOURNAL OF COGNITIVE NEUROSCIENCE. 2005;17(7):1043–57.
IEEE
[1]
G. Pourtois, S. Schwartz, M. Seghier, F. Lazeyras, and P. Vuilleumier, “Portraits or people? Distinct representations of face identity in the human visual cortex,” JOURNAL OF COGNITIVE NEUROSCIENCE, vol. 17, no. 7, pp. 1043–1057, 2005.
@article{4287597,
  abstract     = {Humans can identify individual faces under different view- viewpoints, even after a single encounter. We determined brain points, regions responsible for processing face identity across view changes after variable delays with several intervening stimuli, using event-related functional magnetic resonance imaging during a long-term repetition priming paradigm. Unfamiliar faces were presented sequentially either in a frontal or three-quarter view. Each face identity was repeated once after an quarter unpredictable lag, with either the same or another viewpoint. Behavioral data showed significant priming in response time, irrespective of view changes. Brain imaging results revealed a reduced response in the lateral occipital and fusiform cortex with face repetition. Bilateral face-selective fusiform areas showed view-sensitive repetition effects, generalizing only from three- quarter to front-views. More medial regions in the left (but not quarter in the right) fusiform showed repetition effects across all types of viewpoint changes. These results reveal that distinct regions within the fusiform cortex hold view- sensitive or view-invariant traces of novel faces, and that face identity is represented in a view-sensitive manner in the functionally defined face-selective areas of both hemispheres. In addition, our finding of a better generalization after exposure to a 3/4-view than to a front-view demonstrates for the first time a neural substrate in the fusiform cortex for the common recognition advantage of three- quarter faces. This pattern provides new insights into the nature of face representation in the human visual system.},
  author       = {Pourtois, Gilles and Schwartz, S and Seghier, ML and Lazeyras, F and Vuilleumier, P},
  issn         = {0898-929X},
  journal      = {JOURNAL OF COGNITIVE NEUROSCIENCE},
  keywords     = {VIEWPOINT-INVARIANT,UNFAMILIAR FACES,INFERIOR TEMPORAL CORTEX,EVENT-RELATED FMRI,FUSIFORM CORTEX,FUNCTIONAL MRI,RECOGNITION,OBJECT,PERCEPTION,NEURONS},
  language     = {eng},
  number       = {7},
  pages        = {1043--1057},
  title        = {Portraits or people? Distinct representations of face identity in the human visual cortex},
  url          = {http://dx.doi.org/10.1162/0898929054475181},
  volume       = {17},
  year         = {2005},
}

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