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Neural correlates of body and face perception following bilateral destruction of the primary visual cortices

Van den Stock, Jan
Tamietto, Marco
Zhan, Minye
Heinecke, Armin
de Gelder, Beatrice
Published in Frontiers in Behavioral Neuroscience. 2014, vol. 8, p. 30
Abstract Non-conscious visual processing of different object categories was investigated in a rare patient with bilateral destruction of the visual cortex (V1) and clinical blindness over the entire visual field. Images of biological and non-biological object categories were presented consisting of human bodies, faces, butterflies, cars, and scrambles. Behaviorally, only the body shape induced higher perceptual sensitivity, as revealed by signal detection analysis. Passive exposure to bodies and faces activated amygdala and superior temporal sulcus. In addition, bodies also activated the extrastriate body area, insula, orbitofrontal cortex (OFC) and cerebellum. The results show that following bilateral damage to the primary visual cortex and ensuing complete cortical blindness, the human visual system is able to process categorical roperties of human body shapes. This residual vision may be based on V1-independent input to body-selective areas along the ventral stream, in concert with areas involved in the representation of bodily states, like insula, OFC, and cerebellum.
PMID: 24592218
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Article (Published version) (1.1 MB) - public document Free access
Research groups Neuropsychologie expérimentale
Neuropsychologie clinique appliquée et neurosciences cognitives (703)
Brain and Language Lab (926)
Project FNS: 320030-144187
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VAN DEN STOCK, Jan et al. Neural correlates of body and face perception following bilateral destruction of the primary visual cortices. In: Frontiers in Behavioral Neuroscience, 2014, vol. 8, p. 30. https://archive-ouverte.unige.ch/unige:73887

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Deposited on : 2015-07-06

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