PECULIARITIES OF HUMAN SLEEP UNDER CONDITIONS OF CONTINUOUS PROLONGED INFLUENCE OF BROAD-BAND NOISE OF AVERAGE INTENSITY,
Abstract
Studies were conducted at the Prof. F. D. Garbov laboratory on the effects of continuous protracted broad band noise on sleep and on the transitional state between sleep and wakefulness to determine the physiological basis for the disturbing effects of noise on man during rest. Quality of sleep was evaluated subjectively, and by the dynamics of the bioelectric activity of the brain, reactions of waking to acoustic stimulation, changes in performance indices (sensory motor reactions to light stimulus) and deviation of certain acoustic sensitivity indexes (screening threshold and acoustic adaptation). A relationship between length of presleep and subsequent sleep stages was established: those who fell asleep rapidly slept soundly and awoke feeling well, while those having difficulty falling asleep slept lightly, awakened frequently, and did not feel well. EEG observations were made. The motor reflex latent period was reduced in the first group and increased in the second group compared to background data. In the first group function of the auditory analyzer was restored and in the second group it was not, as shown by respectively lowered and raised screen thresholds. In the first group the disturbance of acoustic adaption (after 8 hr exposure to noise) was reduced or completely eliminated, while in the second group it did not level out. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1969
- Accession Number
- AD0696500
Entities
People
- E. I. Matsnev
- I. P. Lebedeva
- I. Ya. Yakovleva
- O. P. Kozerenko
- V. I. Myasnikov
Organizations
- National Air and Space Intelligence Center