Manual Asymmetry in Weight Discrimination: Hand or Spatial-Field Advantage?

Sixty subjects who were either left-handed or right-handed performed one-handed weight discrimination using their left and right hands in the left and right spatial fields. Differential thresholds, for the left and right hands of both left-handed and right-handed subjects, were found to be lower in...

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Bibliographic Details
Published in:Perception (London) 1989-01, Vol.18 (3), p.397-402
Main Author: Brodie, Eric E
Format: Article
Language:English
Subjects:
Adolescent
Adult
Biological and medical sciences
Cerebral Cortex - physiology
Differential Threshold
Female
Functional Laterality - physiology
Fundamental and applied biological sciences. Psychology
Hand - physiology
Humans
Male
Perception
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Psychophysics
Space life sciences
Weight Perception - physiology
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Summary:Sixty subjects who were either left-handed or right-handed performed one-handed weight discrimination using their left and right hands in the left and right spatial fields. Differential thresholds, for the left and right hands of both left-handed and right-handed subjects, were found to be lower in the spatial field contralateral to the ear which proved superior in a dichotic listening test. It is concluded that manual asymmetry for weight discrimination results primarily from the mapping of sensorimotor events in the spatial fields onto contralateral cerebral cortex, with an advantage in the spatial field contralateral to the nonlanguage cerebral hemisphere.
ISSN:0301-0066
1468-4233
DOI:10.1068/p180397