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Microwave‐induced changes in nerve cells: Effects of modulation and temperature
Author(s) -
Arber Simon L.,
Lin James C.
Publication year - 1985
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.2250060306
Subject(s) - microwave , irradiation , microwave irradiation , continuous wave , noise (video) , modulation (music) , materials science , biophysics , nuclear magnetic resonance , chemistry , optics , physics , biology , acoustics , laser , quantum mechanics , artificial intelligence , computer science , nuclear physics , image (mathematics)
Helix aspersa neurons were irradiated with continuous‐wave (CW) and noise‐amplitudemodulated microwaves (carrier frequency 2450 MHz, 20% AM, 2 Hz‐20 kHz) in a specially designed waveguide exposure system. Continuous‐wave microwave irradiations were conducted at 8°, 21°, and 28°C, while noise‐modulated irradiation was performed at 21°C. The results showed that exposure of snail neurons to CW microwaves for 60 min at 12.9 W/kg inhibited spontaneous activity and reduced input resistance at 8° and 21°C but not at 28°C. The relative decrease in resistance at 21°C was half that at 8°C. Exposure of neurons to noise‐modulated microwaves at 6.8 and 14.4 W/kg predominately caused excitatory responses characterized by augmented membrane resistance and the appearance of greater activity. The effect differed qualitatively from the inhibition observed with continuous, unmodulated microwave irradiation.

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