Study type: Medical/biological study (experimental study)

Neurone bioelectric activity under magnetic fields of variable frequency in the range of 0.1 - 80 Hz. med./bio.

Published in: J Magn Magn Mater 2004; 272-276 (3): 2424-2425

Aim of study (acc. to author)

To study the responses of neurons under exposure to extremely low frequency electromagnetic fields of low fixed intensity and varying frequencies.

Background/further details

14 experiments were performed on single unit neurones selected from snail "brain" ganglia.

Endpoint

Exposure

Exposure Parameters
Exposure 1: 100 mHz–80 Hz
Exposure duration: continuous for 1 min

Exposure 1

Main characteristics
Frequency 100 mHz–80 Hz
Type
Waveform
Exposure duration continuous for 1 min
Exposure setup
Exposure source
Setup pair of Helmholtz coils with a diameter of 11 cm, 5.5 cm apart; ganglia placed in the center of the coil system
Parameters
Measurand Value Type Method Mass Remarks
magnetic flux density 1 mT - - - -

Methods Endpoint/measurement parameters/methodology

Investigated system:
Time of investigation:
  • during exposure

Main outcome of study (acc. to author)

The neuron responses indicate a window effect: when the applied magnetic field frequency increases, the firing neuron frequency strongly decreases. The "frequency window" ranged between 2-10 Hz.

Study character:

Study funded by

Related articles