The cochlear nuclei, which were investigated in this study, are two nerve nuclei in the brain stem, which carry information from the hair cells in the inner ear to the brain.
Rats were divided into 2 groups (n=7 each): 1) exposure group and 2) control group.
Exposure duration: continuous for 30 days
|Distance between exposed object and exposure source||20 cm|
|Chamber||plastic rat cage|
|Setup||a 15 cm long rod antenna connected to an EMF generator was placed below the rat cage and was positioned parallel to the short axis of the cage; rats could move freely at a maximum distance of 20 cm to the antenna|
Histopathologic analysis showed significantly increased signs of degeneration and significantly more apoptotic cells in the exposure group compared to the control group.
There were no significant differences in acoustic evoked brainstem potentials between the groups.
The authors conclude that exposure of rats to a 2100 MHz electromagnetic field (GSM) might cause degeneration in the cochlear nuclei.