Accession Number:

ADP002098

Title:

Influence of the Circadian Rhythm of Body Temperature on the Physiological Response to Microwaves: Day Versus Night Exposure,

Descriptive Note:

Corporate Author:

NAVAL AEROSPACE MEDICAL RESEARCH LAB PENSACOLA FL

Personal Author(s):

• Lotz, W. G.

Report Date:

1981-10-01

Pagination or Media Count:

16.0

Abstract:

In summary, the results of this study demonstrate an influence of the circadian rhythm on the effects of microwave exposure on plasma cortisol and rectal temperature. The lower rectal temperature during night exposures was presumably due to the lower sham-condition temperature at night, since the temperature increase over sham levels was similar for either day or night exposures. The absence of a cortisol response during night exposures may be simply related to the absolute body temperature reached, although more complex circadian influences cannot be eliminated by these data. Although the results were insufficient to provide a clear understanding of the mechanisms involved, it was shown conclusively that the responses studied depended not only on the independent variables of microwave exposure selected, but also on the baseline levels of the normal physiological state that existed at the time of exposure.

Descriptors:

• *CIRCADIAN RHYTHMS
• *MICROWAVES
• HORMONES
• PHYSIOLOGICAL EFFECTS
• DAY
• NIGHT
• EXPOSURE(PHYSIOLOGY)
• RHESUS MONKEYS
• BODY TEMPERATURE

Subject Categories:

• Anatomy and Physiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE