Accession Number:

AD0724655

Title:

Heart Rate Pre-Action: Anticipatory Change Associated with Self-Pacing,

Descriptive Note:

Corporate Author:

NAVY MEDICAL NEUROPSYCHIATRIC RESEARCH UNIT SAN DIEGO CALIF

Personal Author(s):

Report Date:

1971-01-01

Pagination or Media Count:

20.0

Abstract:

Ten subjects paced themselves in a complex adding task. They were to press a ready button when psychologically ready for the next problem. Following the button press, fixed foreperiods of 0,4 or 8 seconds preceded the visually presented task imperative stimulus. A heart rate HR pre-action preceded the button press, consisting of peak followed by a trough for the 0 second foreperiod, and a monophasic increase in rate for both 4 and 8 second foreperiods. Following the button press, a HR peak occurred which was stable in terms of amplitude and latency across the three experimental conditions. A HR trough followed the peak, with a latency that increased linearly with the length of the anticipated foreperiod. Self-pacing results in HR increase as the primary change preceding a ready signal. If an imperative stimulus is involved, HR will decrease following the increase such that a HR trough is reached about the time that the imperative stimulus occurs. Author

Subject Categories:

  • Psychology
  • Anatomy and Physiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE