Manual interception of moving targets in two dimensions : performance and space-time accuracy
Tresilian, James, Plooy, A. M. and Marinovic, Welber. (2009) Manual interception of moving targets in two dimensions : performance and space-time accuracy. Brain Research, Vol.1250 . pp. 202-217. ISSN 0006-8993Full text not available from this repository.
Official URL: http://dx.doi.org/10.1016/j.brainres.2008.11.001
We report results from four experiments that examined performance of an interceptive task that restricted movement of the hand and moving target to a horizontal plane. The task required accurate control over both where and when interception takes place. Three experiments studied the effects of four independent variables: target speed, target size, manipulandum size and movement amplitude. For small amplitude movements, small, fast targets were hit harder than larger slower ones and targets were hit harder with smaller manipulanda; movement time (MT) was unaffected by target size, but was shorter when the manipulandum was smaller. For larger amplitude movements, smaller, faster targets were also hit harder, but MTs tended to be greater when targets were smaller. The results support the idea that MT and peak movement speed can be independently controlled to some degree in order to meet the accuracy demands of the task. Analysis of the task showed that spatial and temporal accuracy demands are interdependent, indicating that the spatial and temporal variable errors should covary such that increases in one are accompanied by decreases in the other. This can be tested if there is no variation in interception location; which was not the case in the first three experiments. In a final experiment variation in interception location was restricted by requiring that the target be struck through an aperture. Both spatial and temporal variable errors could be estimated. As predicted, it was found that when spatial errors were small, temporal errors were large. (C) 2008 Elsevier B.V. All rights reserved.
|Item Type:||Journal Article|
|Subjects:||B Philosophy. Psychology. Religion > BF Psychology
R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
|Divisions:||Faculty of Science > Psychology|
|Library of Congress Subject Headings (LCSH):||Movement, Psychology of , Human mechanics, Perceptual-motor processes|
|Journal or Publication Title:||Brain Research|
|Publisher:||Elsevier Science BV|
|Official Date:||23 January 2009|
|Number of Pages:||16|
|Page Range:||pp. 202-217|
|Access rights to Published version:||Restricted or Subscription Access|
Adamovich, S.V., Berkinblit, M.B., Fookson, O., Poizner, H., 1999.
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