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A 60 Hz electric and magnetic field exposure facility for nonhuman primates: Design and operational data during experiments
Author(s) -
Rogers Walter R.,
Lucas Jeffrey H.,
Cory William E.,
Orr John L.,
Smith Houston D.
Publication year - 1996
Publication title -
bioelectromagnetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.435
H-Index - 81
eISSN - 1521-186X
pISSN - 0197-8462
DOI - 10.1002/(sici)1521-186x(1996)3+<2::aid-bem1>3.0.co;2-4
Subject(s) - bioelectromagnetics , nonhuman primate , magnetic field , physics , medical physics , systems engineering , engineering , biology , quantum mechanics , evolutionary biology
A unique exposure facility was designed and constructed to generate large‐scale vertical electric fields (EF) of up to 65 kV/m and horizontal magnetic fields (MF) of up to 100 μT (1G), so that the behavioral and neuroendocrine effects of 60 Hz EF or combined electric and magnetic field (E/MF) exposure could be examined using nonhuman primates as subjects. Facility design and operational problems and their solutions are presented, and representative operational data from four sets of experiments are provided. A specially designed, optically isolated, 4 cm spherical‐dipole EF probe and a commercially available MF probe were used to map the EF and MF within the fiberglass animal cages. In addition, amplifiers, signal conditioners, and A/D converters provided EF, MF, and transformer signals to a microcomputer at 15 min intervals. The apparatus produced homogeneous, stable E/MF at the desired intensities, and the fiberglass cages did not produce appreciable distortion or attenuation. Levels of recognized EF artifacts such as corona and ozone were negligible. The facility worked as intended, providing a well‐characterized and artifact‐controlled environment for experiments with baboons ( Papio cynocephalus ). © 1996 Wiley‐Liss, Inc.