Representing spatial location and layout from sparse kinesthetic contacts.

Full Abstract

Participants' fingers were guided to 2 locations on a table for 3 s, then back to the start. They reported distances and angles between the locations by (a) replacing 1 or 2 fingers, (b) translating the contacted configuration, or (c) estimating distance or angle alone. Distance error increased across these conditions. Angular error increased when the angular reference axis was rotated before the response. Replacing 1 finger was impaired by a change in posture from exposure to test. The results suggest a kinesthetic representation is used to replace the fingers, but to estimate distance and angle at new locations, a configural representation is computed. This presentation is oriented within an extrinsic reference frame and maintains shape more accurately than scale.

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Author information

Author/s: Klatzky, Roberta L (RL); Lederman, Susan J (SJ);

Affiliation: Department of Psychology, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213-3890, USA. klatzky@cmu.edu

Grants: EY 09740 (Agency:United States NEI)

Journal and publication information

Publication Type: Clinical Trial; Journal Article; Research Support, U.S. Gov't, P.H.S.

Journal: Journal of experimental psychology. Human perception and performance (J Exp Psychol Hum Percept Perform), published in United States. (Language: eng)

Reference: 2003-Apr; vol 29 (issue 2) : pp 310-25

Dates: Created 2003/05/22; Completed 2003/09/09; Revised 2007/11/14;

PMID: 12760617, 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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