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| Research article summary (published 2 Sep 2003): |
Time constants in the perception of a change in the direction of motion in humans.
Full Abstract
Motion signals are subject to spatio-temporal filtering at early stages of processing. In general, motion can be characterized by two parameters:
speed and direction. This study sought to determine the time constants for the filtering of the directional component of the motion signal. In a forced-choice discrimination task, subjects were asked to choose the more abrupt change in direction of a target that moved through two 90 degrees corners. At each corner, direction of motion was low-pass filtered. Subjects were able to reliably perform this task if the filter time constants differed by >20 ms.
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Author information
Author/s: Soechting, John F (JF); Mrotek, Leigh A (LA); Flanders, Martha (M);
Affiliation: Department of Neuroscience, University of Minnesota, 6-145 Jackson Hall, 321 Church Street S.E., Minneapolis, MN 55455-0250, USA. soech001(-atsign-)umn.edu
Grants: EY-13704 (Agency:United States NEI)
Journal and publication information
Publication Type: Comparative Study; Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.
Journal: Neuroscience letters (Neurosci Lett), published in Ireland. (Language: eng)
Reference: 2003-Sep; vol 348 (issue 1) : pp 56-60
Dates: Created 2003/08/01; Completed 2003/09/12; Revised 2007/11/14;
PMID: 12893424, 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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