Quantifying the cognitive trajectories of extrapolated movements.
- 1 January 1983
- journal article
- Published by American Psychological Association (APA) in Journal of Experimental Psychology: Human Perception and Performance
- Vol. 9 (1) , 43-57
- https://doi.org/10.1037//0096-1523.9.1.43
Abstract
Subjects' extrapolations of a piecewise constant-velocity trajectory and a constant-acceleration trajectory were mapped out over a sequence of trials that required only a button-press response. Without any performance feedback, subjects' extrapolations of both trajectories approximated an acceleration segment followed by a constant-velocity segment. With performance feedback, subjects' extrapolations of the constant-acceleration trajectory approached optimal performance. Subsequent withdrawal of the feedback shifted the entire extrapolated trajectory. These feedback-related changes in the extrapolated trajectory can be interpreted as changes in two parameters of a cognitive representation of the movement pattern.Keywords
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