Preserved Haptic Shape Processing after Bilateral LOC Lesions.
Identifieur interne : 000654 ( Main/Exploration ); précédent : 000653; suivant : 000655Preserved Haptic Shape Processing after Bilateral LOC Lesions.
Auteurs : Jacqueline C. Snow ; Melvyn A. Goodale [Canada] ; Jody C. Culham [Canada]Source :
- The Journal of neuroscience : the official journal of the Society for Neuroscience [ 1529-2401 ] ; 2015.
English descriptors
- KwdEn :
- Adult, Brain Injuries (pathology), Brain Injuries (physiopathology), Female, Functional Laterality, Humans, Image Processing, Computer-Assisted, Magnetic Resonance Imaging, Male, Middle Aged, Occipital Lobe (blood supply), Occipital Lobe (pathology), Oxygen (blood), Pattern Recognition, Visual (physiology), Psychophysics, Time Factors, Touch, Visual Perception (physiology).
- MESH :
- chemical , blood : Oxygen.
- blood supply : Occipital Lobe.
- pathology : Brain Injuries, Occipital Lobe.
- physiology : Pattern Recognition, Visual, Visual Perception.
- physiopathology : Brain Injuries.
- Adult, Female, Functional Laterality, Humans, Image Processing, Computer-Assisted, Magnetic Resonance Imaging, Male, Middle Aged, Psychophysics, Time Factors, Touch.
Abstract
The visual and haptic perceptual systems are understood to share a common neural representation of object shape. A region thought to be critical for recognizing visual and haptic shape information is the lateral occipital complex (LOC). We investigated whether LOC is essential for haptic shape recognition in humans by studying behavioral responses and brain activation for haptically explored objects in a patient (M.C.) with bilateral lesions of the occipitotemporal cortex, including LOC. Despite severe deficits in recognizing objects using vision, M.C. was able to accurately recognize objects via touch. M.C.'s psychophysical response profile to haptically explored shapes was also indistinguishable from controls. Using fMRI, M.C. showed no object-selective visual or haptic responses in LOC, but her pattern of haptic activation in other brain regions was remarkably similar to healthy controls. Although LOC is routinely active during visual and haptic shape recognition tasks, it is not essential for haptic recognition of object shape.
DOI: 10.1523/JNEUROSCI.0859-14.2015
PubMed: 26446226
Affiliations:
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Goodale</name><affiliation wicri:level="1"><nlm:affiliation>The Brain and Mind Institute, The Natural Sciences Centre, Department of Psychology, University of Western Ontario, London, Ontario N6A5B7, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>The Brain and Mind Institute, The Natural Sciences Centre, Department of Psychology, University of Western Ontario, London, Ontario N6A5B7</wicri:regionArea><wicri:noRegion>Ontario N6A5B7</wicri:noRegion></affiliation></author><author><name sortKey="Culham, Jody C" sort="Culham, Jody C" uniqKey="Culham J" first="Jody C" last="Culham">Jody C. 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Snow</name><affiliation><nlm:affiliation>Department of Psychology, University of Nevada, Reno, Nevada 89557, and jacqueline.c.snow@gmail.com snow@unr.edu.</nlm:affiliation><wicri:noCountry code="subField">and jacqueline.c.snow@gmail.com</wicri:noCountry></affiliation></author><author><name sortKey="Goodale, Melvyn A" sort="Goodale, Melvyn A" uniqKey="Goodale M" first="Melvyn A" last="Goodale">Melvyn A. Goodale</name><affiliation wicri:level="1"><nlm:affiliation>The Brain and Mind Institute, The Natural Sciences Centre, Department of Psychology, University of Western Ontario, London, Ontario N6A5B7, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>The Brain and Mind Institute, The Natural Sciences Centre, Department of Psychology, University of Western Ontario, London, Ontario N6A5B7</wicri:regionArea><wicri:noRegion>Ontario N6A5B7</wicri:noRegion></affiliation></author><author><name sortKey="Culham, Jody C" sort="Culham, Jody C" uniqKey="Culham J" first="Jody C" last="Culham">Jody C. Culham</name><affiliation wicri:level="1"><nlm:affiliation>The Brain and Mind Institute, The Natural Sciences Centre, Department of Psychology, University of Western Ontario, London, Ontario N6A5B7, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>The Brain and Mind Institute, The Natural Sciences Centre, Department of Psychology, University of Western Ontario, London, Ontario N6A5B7</wicri:regionArea><wicri:noRegion>Ontario N6A5B7</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="2015" type="published">2015</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adult</term><term>Brain Injuries (pathology)</term><term>Brain Injuries (physiopathology)</term><term>Female</term><term>Functional Laterality</term><term>Humans</term><term>Image Processing, Computer-Assisted</term><term>Magnetic Resonance Imaging</term><term>Male</term><term>Middle Aged</term><term>Occipital Lobe (blood supply)</term><term>Occipital Lobe (pathology)</term><term>Oxygen (blood)</term><term>Pattern Recognition, Visual (physiology)</term><term>Psychophysics</term><term>Time Factors</term><term>Touch</term><term>Visual Perception (physiology)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="blood" xml:lang="en"><term>Oxygen</term></keywords><keywords scheme="MESH" qualifier="blood supply" xml:lang="en"><term>Occipital Lobe</term></keywords><keywords scheme="MESH" qualifier="pathology" xml:lang="en"><term>Brain Injuries</term><term>Occipital Lobe</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Pattern Recognition, Visual</term><term>Visual Perception</term></keywords><keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Brain Injuries</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adult</term><term>Female</term><term>Functional Laterality</term><term>Humans</term><term>Image Processing, Computer-Assisted</term><term>Magnetic Resonance Imaging</term><term>Male</term><term>Middle Aged</term><term>Psychophysics</term><term>Time Factors</term><term>Touch</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The visual and haptic perceptual systems are understood to share a common neural representation of object shape. A region thought to be critical for recognizing visual and haptic shape information is the lateral occipital complex (LOC). We investigated whether LOC is essential for haptic shape recognition in humans by studying behavioral responses and brain activation for haptically explored objects in a patient (M.C.) with bilateral lesions of the occipitotemporal cortex, including LOC. Despite severe deficits in recognizing objects using vision, M.C. was able to accurately recognize objects via touch. M.C.'s psychophysical response profile to haptically explored shapes was also indistinguishable from controls. Using fMRI, M.C. showed no object-selective visual or haptic responses in LOC, but her pattern of haptic activation in other brain regions was remarkably similar to healthy controls. Although LOC is routinely active during visual and haptic shape recognition tasks, it is not essential for haptic recognition of object shape.</div></front></TEI><affiliations><list><country><li>Canada</li></country></list><tree><noCountry><name sortKey="Snow, Jacqueline C" sort="Snow, Jacqueline C" uniqKey="Snow J" first="Jacqueline C" last="Snow">Jacqueline C. Snow</name></noCountry><country name="Canada"><noRegion><name sortKey="Goodale, Melvyn A" sort="Goodale, Melvyn A" uniqKey="Goodale M" first="Melvyn A" last="Goodale">Melvyn A. Goodale</name></noRegion><name sortKey="Culham, Jody C" sort="Culham, Jody C" uniqKey="Culham J" first="Jody C" last="Culham">Jody C. Culham</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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