Study type: Medical/biological study (experimental study)

The transmission of reflexes in the spinal cord of cats during direct irradiation with microwaves med./bio.

Published in: J Microw Power 1976; 11 (1): 49-60

Aim of study (acc. to author)

To study the effect of 2450 CW microwaves on reflex response and synaptic function the spinal cord of cats was directly exposed.

Endpoint

Exposure

Exposure Parameters
Exposure 1: 2.45 GHz
Modulation type: single pulse
Exposure duration: 30 min
Exposure 2: 2.45 GHz
Modulation type: pulsed
Exposure duration: 9 pulses with an interval of 5 s repeated for 30 min

Exposure 1

Main characteristics
Frequency 2.45 GHz
Type
Exposure duration 30 min
Modulation
Modulation type single pulse
Pulse width 0.05 ms
Exposure setup
Exposure source
  • logperiodic antenna with parabolic reflector
Chamber styrofoam table and attached modular frame made of teflon
Setup stimulation via electrodes
Parameters
Measurand Value Type Method Mass Remarks
cf. remarks - - - - U = 2 V
power density 20 mW/cm² - - - or 10 mW/cm²

Exposure 2

Main characteristics
Frequency 2.45 GHz
Type
Exposure duration 9 pulses with an interval of 5 s repeated for 30 min
Modulation
Modulation type pulsed
Pulse width 0.05 ms
Repetition frequency 500 Hz
Exposure setup
Exposure source
Parameters
Measurand Value Type Method Mass Remarks
cf. remarks - - - - U = 2 V
power density 20 mW/cm² - - - or 10 mW/cm²

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Investigated organ system:
Time of investigation:
  • during exposure

Main outcome of study (acc. to author)

A small but statistically significant increase in the reflex response was revealed in the first series of experiment, which indicates enhancement of the synaptic transmission. However, this effect was not observed in a second series of experiments in which the incident power density was increased from 10 mW/cm² to 20 mW/cm².

Study character:

Study funded by