Feasibity of Using a Measure of Heart Rate Change in Human Adults to Signal Occurrence of Tone
ARMY RESEARCH INST FOR THE BEHAVIORAL AND SOCIAL SCIENCES ALEXANDRIA VA
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An organisms overt response to a stimulus is the most evident, but not the sole, response elicited by that stimulus. A covert response could be a more reliable and more sensitive response to the stimulus than the traditionally monitored overt response. Using group statistics, a change in heart rate HR of human subjects exposed to auditory signals has been reported. If HR change is a reliable response, as previous research would suggest, then it may be possible to use its occurrence to signal the presentation of a tone. A reliable HR response HR-R would be extremely valuable in auditory signal detection situations, where operators often become drowsy and fail to respond overtly to auditory signals. The object of this study was to determine the feasibility of employing a measure of HR change in human adult subjects to signal the occurrence of a tone.
- Anatomy and Physiology