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Separate sources of spatial information for distance and location in rapid aiming movements


Khan, MA and Hale, T and Garry, MI and Franks, IM, Separate sources of spatial information for distance and location in rapid aiming movements, Motor Control, 6, (1) pp. 84-103. ISSN 1087-1640 (2002) [Refereed Article]

DOI: doi:10.1123/mcj.6.1.84


The purpose of this research was to examine the role of distance and location information in the production of rapid aiming movements. Participants performed an aiming task consisting of horizontal left-handed elbow flexion movements that translated to movements of a cursor on an oscilloscope screen. The location of the home position and the target on the oscilloscope screen were fixed but the initial angle of the elbow was varied randomly. Participants were informed that the required distance was always constant. Initial impulse and error correction phases were analyzed to examine whether separate spatial codes for distance and position were used in the control of these two movement phases. The results indicated that initial impulse endpoints and the final positions of the limb overshot the target from the leftmost starting positions, while they undershot the target from the rightmost starting positions. Also, varying the initial angle of the elbow had a greater influence on the final position of the limb than initial impulse endpoints.

Item Details

Item Type:Refereed Article
Research Division:Health Sciences
Research Group:Sports science and exercise
Research Field:Motor control
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in philosophy and religious studies
UTAS Author:Garry, MI (Associate Professor Michael Garry)
ID Code:34964
Year Published:2002
Web of Science® Times Cited:4
Deposited By:Psychology
Deposited On:2005-08-01
Last Modified:2011-11-21

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