期刊
BRAIN RESEARCH REVIEWS
卷 46, 期 3, 页码 315-327出版社
ELSEVIER
DOI: 10.1016/j.brainresrev.2004.07.013
关键词
cortical origins; congenital mirror movements; motor overflow; psychiatric and neurological populations; transcallosal facilitation (TCF); transcallosal inhibition (TCI)
Motor overflow refers to the involuntary movements which may accompany the production of voluntary movements. While overflow is not usually seen in the normal population, it does present in children and the elderly, as well as those suffering certain neurological dysfunctions. Advancements in methodology over the last decade have allowed for more convincing conclusions regarding the cortical origins of motor overflow. However, despite significant research, the exact mechanism underlying the production of motor overflow is still unclear. This review presents a more comprehensive conceptualization of the theories of motor overflow, which have often been only vaguely defined. Further, the major findings are explored in an attempt to differentiate the competing theories of motor overflow production. This exploration is done in the context of a range of neurological and psychiatric disorders, in order to elucidate the possible underlying mechanisms of overflow. (C) 2004 Elsevier B.V. All rights reserved.
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