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- Title
Proprioceptive target matching asymmetries in left-handed individuals.
- Authors
Goble, Daniel J.; Noble, Brittany C.; Brown, Susan H.
- Abstract
In right-handers, the ability to reproduce proprioceptive targets has been shown to be asymmetric, favoring the non-preferred left arm. The present study sought to determine whether a similar arm/hemisphere asymmetry exists for left-handers. Ten strong left-handed adults used the left or right arm to perform proprioceptive target matching tasks that varied in processing demands (i.e., need for memory, interhemispheric transfer) and target amplitude (20, 40°). Similar to right-handers, left-handed individuals had smaller total errors when matching with the non-preferred arm. This asymmetry was greatest in conditions with increased processing demands and larger amplitude targets. These results provide the first evidence to date of right arm/left hemisphere dominance for proprioceptive target matching in left-handers that is the “mirror image” of right-handers.
- Subjects
HANDEDNESS; SENSORY evaluation; PROPRIOCEPTION; MUSCULAR sense; ARM; LATERAL dominance
- Publication
Experimental Brain Research, 2009, Vol 197, Issue 4, p403
- ISSN
0014-4819
- Publication type
Academic Journal
- DOI
10.1007/s00221-009-1922-2