Abstract

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. Fifty-five 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.

Keywords

Posterior parietal cortexNeuroscienceMovement (music)Stimulus (psychology)PsychologyVisual cortexCommunicationCognitive psychologyPhysics

MeSH Terms

AnimalsHandMacacaMotor SkillsMovementNeuronsParietal LobeVisionOcular

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Publication Info

Year
1990
Type
article
Volume
83
Issue
1
Pages
29-36
Citations
653
Access
Closed

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Cite This

M. Taira, Seiichiro Mine, A. P. Georgopoulos et al. (1990). Parietal cortex neurons of the monkey related to the visual guidance of hand movement. Experimental Brain Research , 83 (1) , 29-36. https://doi.org/10.1007/bf00232190

Identifiers

DOI
10.1007/bf00232190
PMID
2073947

Data Quality

Data completeness: 81%