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to investigate whether exposure to GSM wireless communication signals has any direct impact on the spatial memory performance.
The male and female probands (n=55) aged 18 to 45 were daily mobile phone users and with or without symptoms they associated with mobile phone use. The test persons were either exposed or sham exposed. The probands passed seven trials in a virtual spatial navigation task (modeled after the Morris Water Task) in which the participant has to navigate to a platform in a pool.
Modulation type: pulsed
ばく露時間: continuous for 3 h
temporal change between non-DTX and DTX mode
55 mobile phone users divided into two groups: i) participants with symptoms (headache, dizziness, difficulties in concentrating) ii) participants with none of the above symptoms
|ばく露時間||continuous for 3 h|
|Additional information||temporal change between non-DTX and DTX mode|
exposure simulated the modulation of the GSM frame structures, but not the higher frequencies resulting from random code modulation
|ばく露装置の詳細||antenna exposed simultaneously all possible exposure foot points of mobile phones and the deeper brain structures|
|Sham exposure||A sham exposure was conducted.|
The group with symptoms improved their performance under exposure to GSM signals, while no such an effect was observed for the group without symptoms. Exposure to GSM signal had no significant effect in both groups on learning in the trials 1 to 7.