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Millimeter‐wave effects on electric activity of crayfish stretch receptors
Author(s) -
Khramov R. N.,
Sosunov E. A.,
Koltun S. V.,
Ilyasova E. N.,
Lednev V. V.
Publication year - 1991
Publication title -
bioelectromagnetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.435
H-Index - 81
eISSN - 1521-186X
pISSN - 0197-8462
DOI - 10.1002/bem.2250120402
Subject(s) - crayfish , millimeter , receptor , physics , biophysics , biology , ecology , optics , biochemistry
The effects of super high frequency (SHF) microwaves (34–78 GHz) on rates of spontaneous firing of the slowly adapting, stretch‐receptor neurons of crayfish were studied. Initially, irradiation of continuously perfused, fluid‐cooled preparations at power densities to 250 mW/cm 2 caused a transient decrease in the rate of spontaneous firing (the dynamic response). Subsequently, with extinction of the SHF field, the rate of firing increased, finally stabilizing at pre‐exposure levels (stationary phase). Rates of firing also increased when the receptor muscle was stretched, and they were inversely correlated with small, field‐induced increases of temperature (∼1.5°C). The response to SHF radiation did not depend on frequency if temperature of the medium was constant. No resonant peaks were found when the millimeter range of frequencies was scanned.