Postural costs of suprapostural task load
UNSPECIFIED. (2003) Postural costs of suprapostural task load. HUMAN MOVEMENT SCIENCE, 22 (3). pp. 253-270. ISSN 0167-9457Full text not available from this repository.
Official URL: http://dx.doi.org/10.1016/S0167-9457(03)00052-6
In an immersive visualization experiment, participants performed a conjunction search task while standing either in open (heels 10 cm apart, feet at a comfortable angle) or closed stance (feet pressed together). In the world-frame condition, the search display maintained its position in space as the participant swayed, generating optic flow informative about sway. In the head-frame condition, the display maintained constant distance and orientation with respect to the participant's head, providing no visual information about sway. In both conditions, participants (surprisingly) searched faster while in the more difficult closed stance. Interpretation of this result is unclear. Participants also swayed more as search-load increased, and made more errors in the high search-load condition. It is suggested that this performance tradeoff is a result of the sharing of a limited-capacity, modality-non-specific spatial-attentional resource between postural and suprapostural tasks. (C) 2003 Elsevier B.V. All rights reserved.
|Item Type:||Journal Article|
|Subjects:||R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
B Philosophy. Psychology. Religion > BF Psychology
G Geography. Anthropology. Recreation > GV Recreation Leisure
|Journal or Publication Title:||HUMAN MOVEMENT SCIENCE|
|Publisher:||ELSEVIER SCIENCE BV|
|Number of Pages:||18|
|Page Range:||pp. 253-270|
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