NDLI: A mirror representation of others' actions in the human anterior parietal cortex.

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A mirror representation of others' actions in the human anterior parietal cortex.

Content Provider	Semantic Scholar
Author	Shmuelof, Lior Zohary, Ehud
Copyright Year	2006
Abstract	The anterior part of the human intraparietal sulcus is known to be involved in visually guided grasping. This region is also active during the observation of object manipulation by others. Here, we explore the nature of action representation using functional magnetic resonance imaging (fMRI). Fourteen subjects observed video clips showing object manipulation by the right or left hand. The clips were presented in either the right or left peripheral visual field. The fMRI activation in the occipital cortex and in the caudal sections of the parietal cortex was specific to the visual-field location of the clips. In contrast, the principal factor determining the response in anterior intraparietal cortex was the identity of the observed hand. Furthermore, these "hand-specific" parietal areas also showed contralateral hand specificity during self action (i.e., object manipulation) without visual feedback. A similar selectivity for the identity of the observed hand was seen when using a region of interest analysis, focusing on individually defined visuomotor voxels within the parietal cortex. This dual visuomotor grasping representation lends further evidence for the existence of a mirror system in humans and suggests that the anterior intraparietal cortex is involved in the specific motor simulation of hand actions.
Starting Page	11
Ending Page	22
Page Count	12
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://columbiampl.org/docs/shmuelof/jns_final.pdf
Alternate Webpage(s)	http://www.jneurosci.org/content/jneuro/26/38/9736.full.pdf
PubMed reference number	16988044v1
Volume Number	26
Issue Number	38
Journal	The Journal of neuroscience : the official journal of the Society for Neuroscience
Language	English
Access Restriction	Open
Subject Keyword	Area striata structure Caudal Dual Groove Motor Cortex Occipital lobe Parietal Lobe Peripheral Neuropathy Structure of intraparietal sulcus Visual Feedback fMRI
Content Type	Text
Resource Type	Article

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