Psychological Effects of Prolonged Exposure to Sonar Signals at an Elevated Intensity. II. Twenty-four Days' Exposure to Signals at 85 dB
Abstract
Ten carefully screened male subjects, 5 civilian men from the New London community and 5 Navy sonarmen were secluded in the Audiology spaces of the Submarine Medical Research Laboratory for a total of 30 days, 4 pre- experimental (no beep), 24 days' exposure to the 85 dB 'beep' and 2 recovery days. Administered daily, the test battery consisted of a sequential reaction time test, a hand-eye coordination test, a measure of muscular tension and 4 measures of mood and affect. Although in 8 of the ten men some depressive trends occurred in the first 3 days of the exposure period, the performance depressive trends the performance data demonstrated no evidence of significance impairment. Similarly, while 3 men reported mild re-occurring headaches, and 5 indicated the 'beep' may have affected their sleep as well as their performance on certain testing procedures, the overall adjustment of the 8 men did not appear to be impaired allowing 1/2 - 3 days for adaptation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 06, 1971
- Accession Number
- AD0746103
Entities
People
- Benjamin B. Weybrew
- Ernest. M. Noddin
Organizations
- Naval Submarine Medical Research Laboratory