| Neurofunctional modulation of brain regions by the observation of pointing and grasping actions. | |
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MedLine Citation:
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PMID: 18534989 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Previous neuroimaging research on healthy humans has provided evidence for a neural system underlying the observation of another person's hand actions. However, whether the neural processes involved in this capacity are activated by the observation of other transitive hand actions such as pointing remains unknown. Therefore, using functional magnetic resonance imaging we investigated the neural mechanisms underlying the observation of static images representing the hand of a human model pointing to an object (pointing condition), grasping an object (grasping condition), or resting in proximity of an object (control condition). The results indicated that activity within portions of the lateral occipitotemporal and the somatosensory cortices modulates according to the type of observed transitive actions. Specifically, these regions were more activated for the grasping than for the pointing condition. In contrast, the premotor cortex, a neural marker of action observation, did not show any differential activity when contrasting the considered experimental conditions. Our findings may provide novel insights regarding a possible role of extrastriate and somatosensory brain areas for the perception of distinct types of human hand-object interactions. |
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Authors:
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Andrea C Pierno; Federico Tubaldi; Luca Turella; Paola Grossi; Luigi Barachino; Paolo Gallo; Umberto Castiello |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2008-06-04 |
Journal Detail:
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Title: Cerebral cortex (New York, N.Y. : 1991) Volume: 19 ISSN: 1460-2199 ISO Abbreviation: Cereb. Cortex Publication Date: 2009 Feb |
Date Detail:
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Created Date: 2009-01-12 Completed Date: 2009-04-10 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9110718 Medline TA: Cereb Cortex Country: United States |
Other Details:
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Languages: eng Pagination: 367-74 Citation Subset: IM |
Affiliation:
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Department of General Psychology, University of Padova, Padova 35131, Italy. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Arm / innervation, physiology Brain / physiology* Female Hand / innervation, physiology Hand Strength / physiology Humans Image Processing, Computer-Assisted Magnetic Resonance Imaging Male Motor Cortex / physiology Oxygen / blood Parietal Lobe / physiology Photic Stimulation Psychomotor Performance / physiology* Space Perception / physiology* Stereotaxic Techniques |
| Chemical | |
Reg. No./Substance:
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7782-44-7/Oxygen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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