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Crossed facilitation and post-contraction depression of abductor pollicis brevis motor neurons

Knezevicˇ, W., Mastaglia, F.L., Thickbroom, G.W. and Carroll, W.M. (1987) Crossed facilitation and post-contraction depression of abductor pollicis brevis motor neurons. Clinical and Experimental Neurology, 23 . pp. 15-21.

Abstract

Crossed facilitation of abductor pollicis brevis (APB) motor neurons by voluntary contraction of the contralateral APB was investigated using F response analysis. The integrated F response EMG showed a mean 4-fold increase during contraction. This enhancement was maintained until the onset of subjective fatigue and then declined. After isometric or isotonic contraction of the ipsilateral APB there was a significant depression of F responses with a progressive return to baseline values over a 6 minute period. The significance of the findings is discussed.

Publication Type: Journal Article
Publisher: Australian Association of Neurologists
URI: http://researchrepository.murdoch.edu.au/id/eprint/24228
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