Accession Number:

AD0631840

Title:

THE EFFECTS OF INDUCED MUSCLE TENSION AND AUDITORY STIMULATION ON TACHISTOSCOPIC PERCEPTION,

Descriptive Note:

Corporate Author:

NAVAL TRAINING DEVICE CENTER PORT WASHINGTON N Y

Personal Author(s):

Report Date:

1966-03-01

Pagination or Media Count:

65.0

Abstract:

The effect of accessory stimulation upon tachistoscopic perception of geometric figures was studied. In Experiment I, 32 subjects were tested on two successive days in a complete factorial design Subjects x Treatments in which degree of induced muscle tension IMT and level of task difficulty were manipulated. An IMT level of 12 of maximum resulted in significantly p.01 improved visual perception. In Experiment II artificial pupils were employed to test the hypothesis that improved performance was due to pupil dilation. Eight subjects from Experiment I were tested on five successive days and performance at 12 of maximum IMT was again significantly p.05 improved, thus precluding pupil dilation as the reason for the results obtained in Experiment I. In Experiment II performance at the middle level of task difficulty benefited significantly p.05 from IMT. Experiment III investigated the effects of four levels of auditory stimulation white noise on tachistoscopic perception in a new group of 32 subjects. Perception was significantly p.05 improved with the 14 of maximum noise level at the easiest level of difficulty. Results were interpreted within the framework of the activation concept. Recent neurophysiological data point to the ascending reticular activating system as a possible mediator which could influence cortical and retinal areas in the facilitation of tasks such as tachistoscopic perception. Author

Subject Categories:

  • Psychology
  • Personnel Management and Labor Relations
  • Anatomy and Physiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE