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Science 8 November 1974:
Vol. 186. no. 4163, pp. 545 - 548
DOI: 10.1126/science.186.4163.545
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Articles

Studies of Squeezing: Handedness, Responding Hand, Response Force, and Asymmetry of Readiness Potential

Marta Kutas 1 and Emanuel Donchin 1

1 Department of Psychology, University of Illinois, Champaign 61820

Eleven subjects squeezed an electronic dynamometer, at each of three force levels, with both their right and left hands. In right-handed subjects the premovement "readiness" potentials were larger over the hemisphere contralateral to the responding hand. Left-handed subjects show contralateral dominance when responding with the right hand but not when responding with the left hand. The data suggest that in the potentials studied there is a component associated with the preparation to perform a specific movement, rather than with generalized preparatory processes.


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