Study type: Medical/biological study (experimental study)

c-Fos induction in visceral and vestibular nuclei of the rat brain stem by a 9.4 T magnetic field. med./bio.

Published in: Neuroreport 2000; 11 (12): 2681-2685

Aim of study (acc. to author)

In a previous study, it has been shown that rats placed in a 9.4 Tesla static magnetic field after drinking a glucose-saccharin solution develop a conditioned taste aversion to glucose-saccharin (see publication 145). The authors sought to identify brain stem regions that are activated by the 9.4 Tesla magnetic field exposure.

Endpoint

Exposure

Exposure Parameters
Exposure 1:
Exposure duration: 30 min

Exposure 1

Main characteristics
Frequency
Type
Exposure duration 30 min
Exposure setup
Exposure source
Setup rats placed inside the magnet
Sham exposure A sham exposure was conducted.
Parameters
Measurand Value Type Method Mass Remarks
magnetic flux density 9.4 T - - - -

Exposed system:

Methods Endpoint/measurement parameters/methodology

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

Main outcome of study (acc. to author)

The magnetic field induced significantly more c-Fos-positive cells than sham exposure treatment in the solitary tract, parabrachial, medial vestibular, prepositus, and supragenualis nuclei.
These data suggest that magnetic field exposure causes neural activation in visceral and vestibular nuclei that may promote conditioned taste aversion learning.

Study character:

Study funded by

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