UNSPECIFIED (2004) Adaptive utilization of optical variables during postural and suprapostural dual-task performance: Comment on Stoffregen, Smart, Bardy, and Pagulayan (1999). JOURNAL OF EXPERIMENTAL PSYCHOLOGY-HUMAN PERCEPTION AND PERFORMANCE, 30 (1). pp. 28-38. ISSN 0096-1523

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Abstract

T. A. Stoffregen, L. J. Smart, B. G. Bardy. and R. J. Pagulayan (1999) combined a postural task (upright stance) with a suprapostural task (visual fixation) to show that sway variability was not driven by optic flow in a task-independent manner (autonomous control) but governed by the demands of the suprapostural task (facilitatory control). The present study used a novel combination of Stoffregen et al.'s task conditions but obtained clear evidence of autonomous control and no indication of facilitatory control. The theoretical adequacy of the stabilization-by-looking versus stabilization-of-looking contrast was examined, as was emerging evidence that posture control and common cognitive tasks place concurrent demands on the same capacity-limited resources. An adaptive resource-sharing view of postural-suprapostural multitasking was proposed as an alternative to both the autonomous- and facilitatory-control views.

Item Type:	Journal Item
Subjects:	B Philosophy. Psychology. Religion > BF Psychology
Journal or Publication Title:	JOURNAL OF EXPERIMENTAL PSYCHOLOGY-HUMAN PERCEPTION AND PERFORMANCE
Publisher:	AMER PSYCHOLOGICAL ASSOC
ISSN:	0096-1523
Date:	February 2004
Volume:	30
Number:	1
Number of Pages:	11
Page Range:	pp. 28-38
Identification Number:	10.1037/0096-1523.30.1.28
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/8793

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