| Hand shape selection in pantomimed grasping: interaction between the dorsal and the ventral visual streams and convergence on the ventral premotor area. | |
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MedLine Citation:
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PMID: 21739528 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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In visually guided grasping, possible hand shapes are computed from the geometrical features of the object, while prior knowledge about the object and the goal of the action influence both the computation and the selection of the hand shape. We investigated the system dynamics of the human brain for the pantomiming of grasping with two aspects accentuated. One is object recognition, with the use of objects for daily use. The subjects mimed grasping movements appropriate for an object presented in a photograph either by precision or power grip. The other is the selection of grip hand shape. We manipulated the selection demands for the grip hand shape by having the subjects use the same or different grip type in the second presentation of the identical object. Effective connectivity analysis revealed that the increased selection demands enhance the interaction between the anterior intraparietal sulcus (AIP) and posterior inferior temporal gyrus (pITG), and drive the converging causal influences from the AIP, pITG, and dorsolateral prefrontal cortex to the ventral premotor area (PMv). These results suggest that the dorsal and ventral visual areas interact in the pantomiming of grasping, while the PMv integrates the neural information of different regions to select the hand posture. The present study proposes system dynamics in visually guided movement toward meaningful objects, but further research is needed to examine if the same dynamics is found also in real grasping. |
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Authors:
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Michiru Makuuchi; Yoshiaki Someya; Seiji Ogawa; Yoshihiro Takayama |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural Date: 2011-07-07 |
Journal Detail:
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Title: Human brain mapping Volume: 33 ISSN: 1097-0193 ISO Abbreviation: Hum Brain Mapp Publication Date: 2012 Aug |
Date Detail:
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Created Date: 2012-07-18 Completed Date: 2012-11-19 Revised Date: 2013-04-16 |
Medline Journal Info:
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Nlm Unique ID: 9419065 Medline TA: Hum Brain Mapp Country: United States |
Other Details:
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Languages: eng Pagination: 1821-33 Citation Subset: IM |
Copyright Information:
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Copyright © 2011 Wiley Periodicals, Inc. |
Affiliation:
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Max Planck Institute for Human Cognitive and Brain Sciences, Stephanstrasse 1a, 04103 Leipzig, Germany. makuuchi@cbs.mpg.de |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Brain / physiology* Brain Mapping* Female Hand Hand Strength / physiology Humans Image Interpretation, Computer-Assisted Magnetic Resonance Imaging Male Pattern Recognition, Visual / physiology* Psychomotor Performance / physiology* Visual Pathways / physiology* Young Adult |
| Grant Support | |
ID/Acronym/Agency:
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5R01-EB00329-02/EB/NIBIB NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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