Motor cortical function and the precision grip

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Motor cortical function and the precision grip

While task-dependent changes in motor cortical outputs have been previously reported, the issue of whether such changes are specific for complex hand tasks remains unresolved. The aim of the present study was to determine whether cortical inhibitory tone and cortical output were greater during precision grip and power grip. Motor cortex excitability was undertaken by using the transcranial magn...

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Common input across motor nuclei mediating precision grip in humans.

Short-term synchrony was measured for pairs of motor units located within and across muscles activated during a task that mimicked precision grip in the dominant and nondominant hands of human subjects. Surprisingly, synchrony for pairs of motor units residing in separate muscles (flexor pollicis longus, a thumb muscle, and flexor digitorum profundus, an index-finger muscle) was just as large a...

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Power grip and precision handling.

The recent study by Napier (1956) of the prehensile movements of the human hand is of outstanding importance because it points out that the "nature of the intended activity finally influences the pattern of the grip" (p. 906). He distinguishes between the "precision grip" and the "power grip" and states that these patterns, "either separately or in combination, provide the anatomical basis for ...

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ژورنال

عنوان ژورنال: Physiological Reports

سال: 2014

ISSN: 2051-817X

DOI: 10.14814/phy2.12120