To assess the effects of different electric fields on the auditory functions of rabbits.
20 female rabbits were randomly divided into two groups (each n=10) with electric fields of 5.068 kV/m (group 1) and 10.182 kV/m (group 2).
Exposure | Parameters |
---|---|
Exposure 1:
50 Hz
Exposure duration:
continuous for 3 h/day for 6 days and then for additional 8 days
|
|
Frequency | 50 Hz |
---|---|
Type | |
Waveform | |
Exposure duration | continuous for 3 h/day for 6 days and then for additional 8 days |
Measurand | Value | Type | Method | Mass | Remarks |
---|---|---|---|---|---|
electric field strength | 5.068 kV/m | - | measured | - | - |
electric field strength | 10.182 kV/m | - | measured | - | - |
magnetic flux density | 0.00218 nT | - | measured | - | at 5.068 kV/m |
magnetic flux density | 0.00445 nT | - | measured | - | at 10.182 kV/m |
In both groups, the amplitudes recorded after day 6 and 14 of exposure were not different from the amplitudes before exposure, except for significant lower amplitudes in the right ear of group 1 at a click-stimulus of 1.5 kHz on day 6 compared to before exposure (this effect was transient). There were no significant differences between the transient evoked otoacoustic emissions amplitudes of the right and left ears of both groups after day 6 and 14 of exposure.
Extremely low frequency electromagnetic fields have no significant effects on the auditory sensation (cochlear function) of rabbits.
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