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Hyperactivity and disruption of operant behavior in rats after multiple exposures to microwave radiation
Author(s) -
Mitchell Daniel S.,
Switzer Walter G.,
Bronaugh Edwin L.
Publication year - 1977
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs012i06sp00263
Subject(s) - differential effects , operant conditioning , locomotor activity , medicine , rectal temperature , physiology , biology , endocrinology , psychology , reinforcement , social psychology
A multimode microwave (MW) exposure chamber was employed to investigate the effects of low‐intensity CW radiation on one innate and two learned behaviors of female Sprague‐Dawley rats. Relative to sham‐irradiated controls, exposure to 2.45‐GHz radiation at an averaged specific absorption rate (SAR) of 2.3 mW/g was associated with: (a) statistically significant increases in locomotor activity, (b) statistically reliable evidence of disrupted differential responding during tests of an appetitively reinforced operant behavior, but (c) no differential effects on the performance of a Sidman avoidance response. The observed effects emerged almost immediately following the onset of MW radiation and persisted throughout the course of a 22‐week sequence of exposures to radiation. Periodic sampling of rectal temperature revealed no indication of whole‐body elevation of temperature. The observed behavioral effects are consistent with a general activation hypothesis and, although the underlying mechanism remains unclear, suggest MW‐induced alterations in function of the central nervous system.