No dose-response effects of radiation on otoacoustic
emissions were found. BERA revealed a significant mean
threshold increase in both ears of every animal (exposed to
microwaves and controls) during the two months that the
experiment lasted. The authors explained these findings
describing that as the animals grew, their heads increased,
and so did the distance between central auditory pathways
and the auditory evoked potential recording electrodes.
There were no threshold differences between the radiation-
exposed and the contralateral ear (non-exposed) in
microwave-irradiated animals