Study type: Medical/biological study (experimental study)

Contraction of frog myocardium in non-uniform electromagnetic field med./bio.

By: Pozela J, Narusevicius E, Pauza A, Mikalauskas K
Published in: Gen Physiol Biophys 1987; 6 (4): 321-326
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Aim of study (acc. to author)

To investigate the effects of non-uniform microwave electromagnetic field on contraction of the frog myocard.

Endpoint

Exposure

Exposure Parameters
Exposure 1: 28.86 GHz
Exposure duration: 18 min
Exposure 2: 11 MHz
Exposure duration: 18 min

Exposure 1

Main characteristics
Frequency 28.86 GHz
Exposure duration 18 min
Exposure setup
Exposure source
Setup Emitters and electrodes were submerged in a bathing soloution and fixed in the immediate proximity of the muscle.
Parameters
Measurand Value Type Method Mass Remarks
power density 50 W/m² - measured - -

Exposure 2

Main characteristics
Frequency 11 MHz
Exposure duration 18 min
Exposure setup
Exposure source
Setup Emitters and electrodes were submerged in a bathing soloution and fixed in the immediate proximity of the muscle.
Parameters
Measurand Value Type Method Mass Remarks
power density 50 W/m² - measured - -

Exposed system:

Methods Endpoint/measurement parameters/methodology

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

Main outcome of study (acc. to author)

An increase of muscle tension up to 20 % (at 11 MHz) to 50 % (at 28.26 GHz) was observed. After initiate of exposure a short decrease was found, followed by an increase until a stationary level of muscle contraction was reached. After turnig of the exposure a short additional increase followed by a subsequent decrease to initial levels was obserwed. The underlying mechanisms of these effects have not yet been understood.

Study character:

Study funded by