PSYCHOPHYSIOLOGICAL MEASURES OF WORKLOAD DURING CONTINUOUS MANUAL PERFORMANCE

被引:37
作者
BACKS, RW [1 ]
RYAN, AM [1 ]
WILSON, GF [1 ]
机构
[1] ARMSTRONG LAB,PERFORMANCE ASSESSMENT BRANCH,WRIGHT PATTERSON AFB,OH
关键词
D O I
10.1177/001872089403600308
中图分类号
B84 [心理学]; C [社会科学总论]; Q98 [人类学];
学科分类号
03 ; 0303 ; 030303 ; 04 ; 0402 ;
摘要
Twelve subjects (six female) participated in an experiment designed to separate the effects of perceptual/central and physical demands on psychophysiological measures of peripheral nervous system activity. The difficulty of a single-axis continuous manual tracking task was varied in two ways: order of control was manipulated to vary perceptual/central processing demand, and disturbance amplitude was manipulated to vary physical demand. Physiological measures were sensitive to the imposition of a task and were more sensitive to physical than to perceptual/central demands. A principal components analysis identified five factors (three of them physiological) that accounted for 83.1% of the observed variance. Perceptual/central processing demands specifically affected the component identified with sympathetic cardiovascular control, whereas physical demands were reflected in the component identified with parasympathetic cardiovascular control. This finding suggests that dissociations observed among cardiovascular measures in manual performance tasks are attributable to differential activation of the autonomic control systems.
引用
收藏
页码:514 / 531
页数:18
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