期刊
JOURNAL OF MOTOR BEHAVIOR
卷 47, 期 1, 页码 47-55出版社
ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD
DOI: 10.1080/00222895.2014.981501
关键词
intermanual transfer; aging; HAROLD model; CRUNCH model
资金
- Wellcome Trust
- Medical Research Council
- Wellcome Trust [106149/Z/14/Z] Funding Source: Wellcome Trust
- MRC [G0802195] Funding Source: UKRI
- Medical Research Council [G0802195] Funding Source: researchfish
- Wellcome Trust [106149/Z/14/Z] Funding Source: researchfish
. Hemispheric lateralization of movement control diminishes with age; whether this is compensatory or maladaptive is debated. The authors hypothesized that if compensatory, bilateral activation would lead to greater intermanual transfer in older subjects learning tasks that activate the cortex unilaterally in young adults. They studied 10 young and 14 older subjects, learning a unimanual visuomotor task comprising a feedforward phase, where there is unilateral cortical activation in young adults, and a feedback phase, which activates the cortex bilaterally in both age groups. Increased intermanual transfer was demonstrated in older subjects during feedforward learning, with no difference between groups during feedback learning. This finding is consistent with bilateral cortical activation being compensatory to maintain performance despite declining computational efficiency in neural networks.
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