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Parietal cortex neurons of the monkey related to the visual guidance of hand movement

Parietal cortex neurons of the monkey related to the visual guidance of hand movement 221 83 83 1 1 M. Taira S. Mine A. P. Georgopoulos A. Murata H. Sakata 1st Department of Physiology Nihon University School of Medicine 30-1 Ohyaguchi-kamimachi, Itabasiku 173 Tokyo Japan Department of Neurosurgery Chiba University School of Medicine 280 Chiba Japan The Philip Bard Laboratories of Neurophysiology, Department of Neuroscience Johns Hopkins University, School of Medicine 21205 Baltimore MD USA Summary A class of neurons specifically related to hand movements was studied in the posterior parietal cortex while the monkeys manipulated different types of objects. We examined the neuronal activity during manipulation of objects by the hand in the light and in the dark. Fiftyfive neurons were active during manipulation in the dark and were classified as “hand-movement-related” neurons. Of these, 38/55 (69%) cells were also influenced by the visual stimulus. Most of the hand-movement-related neurons were selective in the type of objects manipulated. Moreover, some of these cells were selective in the axis of orientation of the object. These results suggest that the hand-movement-related neurons of the parietal cortex are concerned with the visual guidance of the hand movement, especially in matching the pattern of movement with the spatial characteristics of the object to be manipulated. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Experimental Brain Research Springer Journals

Parietal cortex neurons of the monkey related to the visual guidance of hand movement

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References (35)

Publisher
Springer Journals
Copyright
Copyright © 1990 by Springer-Verlag
Subject
Biomedicine; Neurosciences; Neurology
ISSN
0014-4819
eISSN
1432-1106
DOI
10.1007/BF00232190
Publisher site
See Article on Publisher Site

Abstract

221 83 83 1 1 M. Taira S. Mine A. P. Georgopoulos A. Murata H. Sakata 1st Department of Physiology Nihon University School of Medicine 30-1 Ohyaguchi-kamimachi, Itabasiku 173 Tokyo Japan Department of Neurosurgery Chiba University School of Medicine 280 Chiba Japan The Philip Bard Laboratories of Neurophysiology, Department of Neuroscience Johns Hopkins University, School of Medicine 21205 Baltimore MD USA Summary A class of neurons specifically related to hand movements was studied in the posterior parietal cortex while the monkeys manipulated different types of objects. We examined the neuronal activity during manipulation of objects by the hand in the light and in the dark. Fiftyfive neurons were active during manipulation in the dark and were classified as “hand-movement-related” neurons. Of these, 38/55 (69%) cells were also influenced by the visual stimulus. Most of the hand-movement-related neurons were selective in the type of objects manipulated. Moreover, some of these cells were selective in the axis of orientation of the object. These results suggest that the hand-movement-related neurons of the parietal cortex are concerned with the visual guidance of the hand movement, especially in matching the pattern of movement with the spatial characteristics of the object to be manipulated.

Journal

Experimental Brain Research – Springer Journals

Published: Dec 1, 1990

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