The brain network underlying the recognition of hand gestures in the blind: the supramodal role of the extrastriate body area.
Identifieur interne : 003162 ( Ncbi/Curation ); précédent : 003161; suivant : 003163The brain network underlying the recognition of hand gestures in the blind: the supramodal role of the extrastriate body area.
Auteurs : Ryo Kitada [Japon] ; Kazufumi Yoshihara [Japon] ; Akihiro T. Sasaki [Japon] ; Maho Hashiguchi [Japon] ; Takanori Kochiyama ; Norihiro Sadato [Japon]Source :
- The Journal of neuroscience : the official journal of the Society for Neuroscience [ 1529-2401 ] ; 2014.
English descriptors
- KwdEn :
- Adult, Blindness (diagnosis), Blindness (physiopathology), Brain (physiology), Female, Gestures, Hand (physiology), Humans, Magnetic Resonance Imaging (methods), Male, Nerve Net (physiology), Psychomotor Performance (physiology), Recognition (Psychology) (physiology), Visual Cortex (physiology), Young Adult.
- MESH :
- diagnosis : Blindness.
- methods : Magnetic Resonance Imaging.
- physiology : Brain, Hand, Nerve Net, Psychomotor Performance, Recognition (Psychology), Visual Cortex.
- physiopathology : Blindness.
- Adult, Female, Gestures, Humans, Male, Young Adult.
Abstract
The visual perception of others' body parts is critical for understanding and imitating their behavior. The visual cortex in humans includes the extrastriate body area (EBA), which is a large portion of the occipitotemporal cortex that is selectively responsive to visually perceived body parts. Previous neuroimaging studies showed that the EBA not only receives sensory inputs regarding others' body information but also receives kinesthetic feedback regarding one's own actions. This finding raised the possibility that the EBA could be formed via nonvisual sensory modalities. However, the effect of visual deprivation on the formation of the EBA has remained largely unknown. Here, we used fMRI to investigate the effect of vision loss on the development of the EBA. Blind and sighted human subjects performed equally well in a haptic-identification task involving three categories of objects (hand shapes, toy cars, and teapots). The superior part (i.e., the middle temporal gyrus and angular gyrus) of the EBA and the supramarginal gyrus showed greater sensitivity to recognized hand shapes than to inanimate objects, regardless of the sensory modality and visual experience. Unlike the superior part of the EBA, the sensitivity of the inferior part (i.e., the inferior temporal sulcus and middle occipital gyrus) depended on visual experience. However, this vision-dependent sensitivity explained minor individual differences in hand-recognition performance. These results indicate that nonvisual modalities drive the development of the cortical network underlying the recognition of hand gestures with a node in the visual cortex.
DOI: 10.1523/JNEUROSCI.0500-14.2014
PubMed: 25057211
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Takanori Kochiyama<affiliation><nlm:affiliation>ATR Brain Activity Imaging Center, Seika-cho 619-0288, Japan, and.</nlm:affiliation><wicri:noCountry code="subField">and</wicri:noCountry></affiliation>Le document en format XML
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Sasaki</name><affiliation wicri:level="1"><nlm:affiliation>Department of Physiology, Osaka City University Graduate School of Medicine, Osaka, Japan, Pathophysiological and Health Science Team, RIKEN Center for Life Science Technologies, Kobe, 650-0047, Japan.</nlm:affiliation><country xml:lang="fr">Japon</country><wicri:regionArea>Department of Physiology, Osaka City University Graduate School of Medicine, Osaka, Japan, Pathophysiological and Health Science Team, RIKEN Center for Life Science Technologies, Kobe, 650-0047</wicri:regionArea><wicri:noRegion>650-0047</wicri:noRegion></affiliation></author><author><name sortKey="Hashiguchi, Maho" sort="Hashiguchi, Maho" uniqKey="Hashiguchi M" first="Maho" last="Hashiguchi">Maho Hashiguchi</name><affiliation wicri:level="1"><nlm:affiliation>Division of Cerebral Integration, National Institute for Physiological Sciences, Okazaki, 444-8585, Japan, Graduate University for Advanced Studies, Hayama, 240-0193, Japan.</nlm:affiliation><country xml:lang="fr">Japon</country><wicri:regionArea>Division of Cerebral Integration, National Institute for Physiological Sciences, Okazaki, 444-8585, Japan, Graduate University for Advanced Studies, Hayama, 240-0193</wicri:regionArea><wicri:noRegion>240-0193</wicri:noRegion></affiliation></author><author><name sortKey="Kochiyama, Takanori" sort="Kochiyama, Takanori" uniqKey="Kochiyama T" first="Takanori" last="Kochiyama">Takanori Kochiyama</name><affiliation><nlm:affiliation>ATR Brain Activity Imaging Center, Seika-cho 619-0288, Japan, and.</nlm:affiliation><wicri:noCountry code="subField">and</wicri:noCountry></affiliation></author><author><name sortKey="Sadato, Norihiro" sort="Sadato, Norihiro" uniqKey="Sadato N" first="Norihiro" last="Sadato">Norihiro Sadato</name><affiliation wicri:level="1"><nlm:affiliation>Division of Cerebral Integration, National Institute for Physiological Sciences, Okazaki, 444-8585, Japan, Graduate University for Advanced Studies, Hayama, 240-0193, Japan, Biomedical Imaging Research Center, University of Fukui, Eiheiji, 910-1193, Japan.</nlm:affiliation><country xml:lang="fr">Japon</country><wicri:regionArea>Division of Cerebral Integration, National Institute for Physiological Sciences, Okazaki, 444-8585, Japan, Graduate University for Advanced Studies, Hayama, 240-0193, Japan, Biomedical Imaging Research Center, University of Fukui, Eiheiji, 910-1193</wicri:regionArea><wicri:noRegion>910-1193</wicri:noRegion></affiliation></author></analytic><series><title level="j">The Journal of neuroscience : the official journal of the Society for Neuroscience</title><idno type="eISSN">1529-2401</idno><imprint><date when="2014" type="published">2014</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adult</term><term>Blindness (diagnosis)</term><term>Blindness (physiopathology)</term><term>Brain (physiology)</term><term>Female</term><term>Gestures</term><term>Hand (physiology)</term><term>Humans</term><term>Magnetic Resonance Imaging (methods)</term><term>Male</term><term>Nerve Net (physiology)</term><term>Psychomotor Performance (physiology)</term><term>Recognition (Psychology) (physiology)</term><term>Visual Cortex (physiology)</term><term>Young Adult</term></keywords><keywords scheme="MESH" qualifier="diagnosis" xml:lang="en"><term>Blindness</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Magnetic Resonance Imaging</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Brain</term><term>Hand</term><term>Nerve Net</term><term>Psychomotor Performance</term><term>Recognition (Psychology)</term><term>Visual Cortex</term></keywords><keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Blindness</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adult</term><term>Female</term><term>Gestures</term><term>Humans</term><term>Male</term><term>Young Adult</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The visual perception of others' body parts is critical for understanding and imitating their behavior. The visual cortex in humans includes the extrastriate body area (EBA), which is a large portion of the occipitotemporal cortex that is selectively responsive to visually perceived body parts. Previous neuroimaging studies showed that the EBA not only receives sensory inputs regarding others' body information but also receives kinesthetic feedback regarding one's own actions. This finding raised the possibility that the EBA could be formed via nonvisual sensory modalities. However, the effect of visual deprivation on the formation of the EBA has remained largely unknown. Here, we used fMRI to investigate the effect of vision loss on the development of the EBA. Blind and sighted human subjects performed equally well in a haptic-identification task involving three categories of objects (hand shapes, toy cars, and teapots). The superior part (i.e., the middle temporal gyrus and angular gyrus) of the EBA and the supramarginal gyrus showed greater sensitivity to recognized hand shapes than to inanimate objects, regardless of the sensory modality and visual experience. Unlike the superior part of the EBA, the sensitivity of the inferior part (i.e., the inferior temporal sulcus and middle occipital gyrus) depended on visual experience. However, this vision-dependent sensitivity explained minor individual differences in hand-recognition performance. These results indicate that nonvisual modalities drive the development of the cortical network underlying the recognition of hand gestures with a node in the visual cortex.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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