Premotor Cortical Ablations in Monkeys: Contralateral Changes in Visually Guided Reaching Behavior

In rhesus monkeys (Macaca mulatta), ablation of the premotor and supplementary motor areas and the adjoining rostral half of the precentral gyrus impairs the capacity of the contralateral arm to reach around a transparent obstacle to a visible food reward, and results in a tendency of this arm to re...

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Published inScience (American Association for the Advancement of Science) Vol. 198; no. 4314; pp. 317 - 319
Main Authors Moll, L., H. G. J. M. Kuypers
Format Journal Article
LanguageEnglish
Published United States American Association for the Advancement of Science 21.10.1977
Subjects
Amino acids
Animals
Anticodon
Arm
Arm - physiology
Behavior, Animal - physiology
Brain stem
Cerebral cortex
Codons
Fingers
Frontal Lobe - physiology
Functional Laterality
Hands
Haplorhini
Hippocampus
Lesions
Macaca mulatta
Motor Cortex - physiology
Movement
Orientation - physiology
Space life sciences
Visual Perception - physiology
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Summary:In rhesus monkeys (Macaca mulatta), ablation of the premotor and supplementary motor areas and the adjoining rostral half of the precentral gyrus impairs the capacity of the contralateral arm to reach around a transparent obstacle to a visible food reward, and results in a tendency of this arm to reach straight to where the food is visible. This may reflect a disinhibition of brainstem pathways which steer the arm and hand straight to a visual target.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:0036-8075
1095-9203
DOI:10.1126/science.410103