, Volume 14, Issue 1, pp 5-12

Response delays and the timing of discrete motor responses


A model for the timing of repetitive discrete motor responses is proposed, and a prediction of negative dependency between successive interresponse intervals is confirmed by data from a Morse key tapping task. A method that makes use of the first-order serial correlation between interresponse intervals is used to distinguish between variance due to a timekeeping process and variance in motor response delays subsequent to the timekeeper. These two quantities are examined as a function of mean interresponse interval.

This research was supported by Grant A7919 from the National Research Council of Canada. The authors wish to thank Saul Sternberg for his critical comments on an earlier draft of this paper.