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A system for simultaneous exposure of small animals to 50-Hz electric and magnetic fields

โœ Scribed by J. W. Baum; A. V. Kuehner; R. D. Benz; A. L. Carsten

Publisher
John Wiley and Sons
Year
1991
Tongue
English
Weight
950 KB
Volume
12
Category
Article
ISSN
0197-8462

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โœฆ Synopsis

Equipment designed for simultaneous exposure of rodents to 60-Hz electric and magnetic fields is described. Three identical systems were constructed, each capable of continuous exposure of 256 rats or 640 mice to a nominal electric field at <50 kV/m, and to horizontal and vertical magnetic fields at <1 mT. Design features, construction details, and results of various tests of the systems are described. Tests were made: of phase relations between electric and magnetic fields; of uniformity of electric and magnetic fields; of changes across time in electric-field intensity as a result of animals' soiling of cages and various washing routines; of resistance of bedding material during humid and dry conditions; and of acoustic noise due to background, to field-generation equipment, and to air conditioning equipment. The results demonstrated that fields were effectively generated but that significant and troublesome changes in electric-field intensity occurred because of cage-soiling. However, when cages were frequently cleaned, field intensities were consistent from one exposure to another.

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