Effects Of P50 Auditory Evoked Potential In Hippocampi Of Rats After Exposure To 1800 MHz Radiofrequency Field

Obejective To detect the Effects of P50 Auditory Evoked Potential in Hippocampi of Rats after Exposure to 1800 MHz Radiofrequency FieldMethods 96 SD (Sprague Dawley) rats (48 in each gender) . 4week-old (including one week for environmental adaptation, body weight 50～75g) . The rats were randomly divided into four groups, which included 2 exposure groups and 2 control groups. Two exposure groups rats were respectively and continuously radiated for 21days (12 hours/day) by 1800 MHz microwave fields with power density of 0．5 mW/cm~2 (groupⅠ) or 1．0 mW/cm~2 (groupⅡ) . Simultaneously, two sham-controls were carried out. Auditory evoked potential P50 was recorded by the conditioning-testing paradigm presented with auditory double-clicks stimuli. detect the Effects of P50 Auditory Evoked Potential in Hippocampi of Rats after Exposure to 1 800 MHz Radiofrequency Field. The responses to auditory evoked potential were compared four groups.Results In group male exposure group rats, the Auditory EvokedPotential in Hippocampi of Rats T/C ratio, the peak-peak size of S2 P50 has change and had significant differences compared with control group (P< 0．05 ); In any other groups rats, the Auditory Evoked Potential in Hippocampi of Rats T/C ratio, the peak-peak size of S2 P50, the peak-peak size of S1 P50, the latency of S2 P50, the peak-peak size of S2 P50, there are no significant differences among the groups (p>0．05 ) .Conclusion The affect of 1800 MHz radiofrequency field with powerdensity of 0．5 mW/cm2 on P50 auditory evoked potential in hippocampi of male rats was observed.