Shape from sound: Evidence for a shape operator in the lateral occipital cortex
Identifieur interne : 003298 ( Main/Exploration ); précédent : 003297; suivant : 003299Shape from sound: Evidence for a shape operator in the lateral occipital cortex
Auteurs : Thomas W. James [États-Unis] ; Ryan A. Stevenson [États-Unis] ; Sunah Kim [États-Unis] ; Ross M. Vanderklok [États-Unis] ; Karin Harman James [États-Unis]Source :
- Neuropsychologia [ 0028-3932 ] ; 2011.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Homme.
English descriptors
- KwdEn :
- Acoustic Stimulation, Auditory Perception (physiology), Brain Mapping, Encephalon, Female, Form Perception (physiology), Functional imaging, Functional magnetic resonance imaging, Hearing, Human, Humans, Image Processing, Computer-Assisted, Intermodal perception, Magnetic Resonance Imaging, Male, Metals, Nuclear magnetic resonance imaging, Occipital Lobe (physiology), Occipital cortex, Psychomotor Performance (physiology), Recognition, Recognition (Psychology) (physiology), Stimulus shape, Vision, Visual Perception (physiology), Visual cortex, Wood, Young Adult.
- MESH :
Abstract
A recent view of cortical functional specialization suggests that the primary organizing principle of the cortex is based on task requirements, rather than sensory modality. Consistent with this view, recent evidence suggests that a region of the lateral occipitotemporal cortex (LO) may process object shape information regardless of the modality of sensory input. There is considerable evidence that area LO is involved in processing visual and haptic shape information. However, sound can also carry acoustic cues to an object's shape, for example, when a sound is produced by an object's impact with a surface. Thus, the current study used auditory stimuli that were created from recordings of objects impacting a hard surface to test the hypothesis that area LO is also involved in auditory shape processing. The objects were of two shapes, rods and balls, and of two materials, metal and wood. Subjects were required to categorize the impact sounds in one of three tasks, (1) by the shape of the object while ignoring material, (2) by the material of the object while ignoring shape, or (3) by using all the information available. Area LO was more strongly recruited when subjects discriminated impact sounds based on the shape of the object that made them, compared to when subjects discriminated those same sounds based on material. The current findings suggest that activation in area LO is shape selective regardless of sensory input modality, and are consistent with an emerging theory of perceptual functional specialization of the brain that is task-based rather than sensory modality-based.
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Vanderklok</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Psychological and Brain Sciences, Indiana University</s1><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Department of Psychological and Brain Sciences, Indiana University</wicri:noRegion></affiliation></author><author><name sortKey="Harman James, Karin" sort="Harman James, Karin" uniqKey="Harman James K" first="Karin" last="Harman James">Karin Harman James</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Psychological and Brain Sciences, Indiana University</s1><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Department of Psychological and Brain Sciences, Indiana University</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Program in Neuroscience, Indiana University</s1><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Program in Neuroscience, Indiana University</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Cognitive Science Program, Indiana University</s1><s3>USA</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Cognitive Science Program, Indiana University</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Neuropsychologia</title><title level="j" type="abbreviated">Neuropsychologia</title><idno type="ISSN">0028-3932</idno><imprint><date when="2011">2011</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Neuropsychologia</title><title level="j" type="abbreviated">Neuropsychologia</title><idno type="ISSN">0028-3932</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Acoustic Stimulation</term><term>Auditory Perception (physiology)</term><term>Brain Mapping</term><term>Encephalon</term><term>Female</term><term>Form Perception (physiology)</term><term>Functional imaging</term><term>Functional magnetic resonance imaging</term><term>Hearing</term><term>Human</term><term>Humans</term><term>Image Processing, Computer-Assisted</term><term>Intermodal perception</term><term>Magnetic Resonance Imaging</term><term>Male</term><term>Metals</term><term>Nuclear magnetic resonance imaging</term><term>Occipital Lobe (physiology)</term><term>Occipital cortex</term><term>Psychomotor Performance (physiology)</term><term>Recognition</term><term>Recognition (Psychology) (physiology)</term><term>Stimulus shape</term><term>Vision</term><term>Visual Perception (physiology)</term><term>Visual cortex</term><term>Wood</term><term>Young Adult</term></keywords><keywords scheme="MESH" type="chemical" xml:lang="en"><term>Metals</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Auditory Perception</term><term>Form Perception</term><term>Occipital Lobe</term><term>Psychomotor Performance</term><term>Recognition (Psychology)</term><term>Visual Perception</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Acoustic Stimulation</term><term>Brain Mapping</term><term>Female</term><term>Humans</term><term>Image Processing, Computer-Assisted</term><term>Magnetic Resonance Imaging</term><term>Male</term><term>Wood</term><term>Young Adult</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Cortex occipital</term><term>Perception intermodale</term><term>Imagerie RMN</term><term>Imagerie fonctionnelle</term><term>Encéphale</term><term>Cortex visuel</term><term>Reconnaissance</term><term>Audition</term><term>Vision</term><term>Forme stimulus</term><term>Homme</term><term>Imagerie par résonance magnétique fonctionnelle</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Homme</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">A recent view of cortical functional specialization suggests that the primary organizing principle of the cortex is based on task requirements, rather than sensory modality. Consistent with this view, recent evidence suggests that a region of the lateral occipitotemporal cortex (LO) may process object shape information regardless of the modality of sensory input. There is considerable evidence that area LO is involved in processing visual and haptic shape information. However, sound can also carry acoustic cues to an object's shape, for example, when a sound is produced by an object's impact with a surface. Thus, the current study used auditory stimuli that were created from recordings of objects impacting a hard surface to test the hypothesis that area LO is also involved in auditory shape processing. The objects were of two shapes, rods and balls, and of two materials, metal and wood. Subjects were required to categorize the impact sounds in one of three tasks, (1) by the shape of the object while ignoring material, (2) by the material of the object while ignoring shape, or (3) by using all the information available. Area LO was more strongly recruited when subjects discriminated impact sounds based on the shape of the object that made them, compared to when subjects discriminated those same sounds based on material. The current findings suggest that activation in area LO is shape selective regardless of sensory input modality, and are consistent with an emerging theory of perceptual functional specialization of the brain that is task-based rather than sensory modality-based.</div></front></TEI><affiliations><list><country><li>États-Unis</li></country><region><li>Californie</li></region><settlement><li>Berkeley (Californie)</li></settlement></list><tree><country name="États-Unis"><noRegion><name sortKey="James, Thomas W" sort="James, Thomas W" uniqKey="James T" first="Thomas W." last="James">Thomas W. James</name></noRegion><name sortKey="Harman James, Karin" sort="Harman James, Karin" uniqKey="Harman James K" first="Karin" last="Harman James">Karin Harman James</name><name sortKey="Harman James, Karin" sort="Harman James, Karin" uniqKey="Harman James K" first="Karin" last="Harman James">Karin Harman James</name><name sortKey="Harman James, Karin" sort="Harman James, Karin" uniqKey="Harman James K" first="Karin" last="Harman James">Karin Harman James</name><name sortKey="James, Thomas W" sort="James, Thomas W" uniqKey="James T" first="Thomas W." last="James">Thomas W. James</name><name sortKey="James, Thomas W" sort="James, Thomas W" uniqKey="James T" first="Thomas W." last="James">Thomas W. James</name><name sortKey="Kim, Sunah" sort="Kim, Sunah" uniqKey="Kim S" first="Sunah" last="Kim">Sunah Kim</name><name sortKey="Kim, Sunah" sort="Kim, Sunah" uniqKey="Kim S" first="Sunah" last="Kim">Sunah Kim</name><name sortKey="Kim, Sunah" sort="Kim, Sunah" uniqKey="Kim S" first="Sunah" last="Kim">Sunah Kim</name><name sortKey="Stevenson, Ryan A" sort="Stevenson, Ryan A" uniqKey="Stevenson R" first="Ryan A." last="Stevenson">Ryan A. Stevenson</name><name sortKey="Stevenson, Ryan A" sort="Stevenson, Ryan A" uniqKey="Stevenson R" first="Ryan A." last="Stevenson">Ryan A. Stevenson</name><name sortKey="Stevenson, Ryan A" sort="Stevenson, Ryan A" uniqKey="Stevenson R" first="Ryan A." last="Stevenson">Ryan A. Stevenson</name><name sortKey="Vanderklok, Ross M" sort="Vanderklok, Ross M" uniqKey="Vanderklok R" first="Ross M." last="Vanderklok">Ross M. Vanderklok</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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