VISUAL TARGET ACQUISITION AND TRACKING PERFORMANCE USING A HELMET-MOUNTED SIGHT

  • 1 January 1978
    • journal article
    • research article
    • Vol. 49  (4) , 565-572
Abstract
Experiments were conducted on human subjects to assess the efficiency with which a helmet-mounted sighting system can be used to locate and track target sources in the horizontal plane. In the 1st experimental condition, in which sight was aligned with discrete stationary target sources, the latency between target presentation and final target location was in the 2-4 s range, dependent on the amplitude of target offset and rate of head movement. In the 2nd condition, subjects were instructed to track a sinusoidally oscillating visual image with the sight. Tracking performance apparently was impaired when frequency of oscillation was increased beyond 0.8-1.0 Hz. Recording of eye movement during both experimental conditions indicated that impairment of performance could, in part, be attributed to involuntary eye movements consequent to stimulation of the vestibulo-ocular reflex by the head turning movements.

This publication has 2 references indexed in Scilit: