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| Research article summary (published 29 Nov 2002): |
Role of duration and interval in perception of force pulses.
Full Abstract
Three experiments investigated the perceptual threshold for a pulsed force stimulation of the middle phalanx of the forefinger. The first experiment (N = 5) manipulated duration of the pulse, and the second (N = 6) manipulated the interval between pulses. Both experiments held magnitude constant. The results confirmed high reliability and indicated that perceptual threshold decreased as both Duration and Interval increased. Although subjects responded consistently, they described the sensation as "muscular" and "diffuse." Exp. 3 (N = 12) covaried Duration and Interval and found effects similar to those of the first two studies. Also, Duration and Interval were independent. Additional research is needed to clarify the relations of duration, interval, and magnitude in contributing to conscious perception of the presence of applied force. Treating pulse magnitude as a dynamic variable by varying its rate of change within a train of force pulses could further our understanding of how perception of force changes depend upon rate.
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Author information
Author/s: Williams, L R T (LR); Walmsley, A (A);
Affiliation: Office of the Pro Vice-Chancellor (Maori), University of Auckland, NZ. lrtwill@ihug.co.nz
Journal and publication information
Publication Type: Journal Article; Research Support, Non-U.S. Gov't
Journal: Perceptual and motor skills (Percept Mot Skills), published in United States. (Language: eng)
Reference: 2002-Dec; vol 95 (issue 3 Pt 1) : pp 691-8
Dates: Created 2003/01/01; Completed 2003/04/07; Revised 2006/11/15;
PMID: 12509161, status: MEDLINE (last retrieval date: 11/6/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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