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Rate of force development and the lateralized readiness potential

Published online by Cambridge University Press:  15 December 2000

WILLIAM J. RAY ,
SEMYON SLOBOUNOV ,
J. TOBY MORDKOFF ,
J. JOHNSTON  and
ROBERT F. SIMON
WILLIAM J. RAY
Affiliation:
Department of Psychology, The Pennsylvania State University, University Park, USA
SEMYON SLOBOUNOV
Affiliation:
Department of Kinesiology, The Pennsylvania State University, University Park, USA
J. TOBY MORDKOFF
Affiliation:
Department of Psychology, The Pennsylvania State University, University Park, USA
J. JOHNSTON
Affiliation:
Department of Kinesiology, The Pennsylvania State University, University Park, USA
ROBERT F. SIMON
Affiliation:
Department of Kinesiology, The Pennsylvania State University, University Park, USA
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Abstract

We examined the relationship between force and rate of force development aspects of movement dynamics and electroencephalogram motor components as reflected in the lateralized readiness potential (LRP). Using self-paced tasks, in Studies 1 and 3 we investigated whether differential speed and accuracy constraints in discrete and repetitive finger force production tasks influenced the LRP. These studies showed that speed tasks produced larger LRP than accuracy tasks regardless of whether the movement type was discrete or repetitive. In Studies 2 and 4 we studied four conditions with two levels of force and two levels of rate of force development. The largest LRPs were found with the greatest rate of force development. Overall, the four studies demonstrated that preparation for differential rates of force development is a major component reflected in the LRP.

Keywords

LRPRate of force developmentSpeed and accuracy tasks
Type
Research Article
Information
Psychophysiology , Volume 37 , Issue 6 , November 2000 , pp. 757 - 765
Copyright
2000 Society for Psychophysiological Research

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