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Guinea pigs (n = 28) were exposed to pulsed ELF across the acoustic frequencies of 50, 500 Hz, or 1, 2, 4, 5 kHz for 20 hr/day at 1.5 milliT for between 180-390 days. Following the exposure period, animals were sacrificed and the auditory organs examined. The authors report no effect on hair cells of the organ of Corti or other auditory tissues. |