To investigate the effects of a 2.5 h exposure to radiofrequency fields typical of that emitted from GSM mobile phones on spatial memory performance in subjects with and without self-reported symptoms attributed to mobile phone use.
|Exposure duration||continuous for 2.5 h|
|Chamber||The setup was designed to maximize exposure of the brain tissue in the left hemisphere that is exposed during actual usage of GSM phones [Hillert et al., 2008].|
|Setup||A patch antenna on the left side of the head simultaneously applied all possible exposure footprints of mobile phones [Kuster et al., 2004].|
|Sham exposure||A sham exposure was conducted.|
|Additional info||A ceramic plate was attached to the left ear lobe for heating.|
Before the exposure there was no difference in performance between groups. After the exposure the symptomatic group improved in performance (shorter distance traveled) while there was no such effect in the non-symptomatic group.
The authors suggested that radiofrequency exposure contributes to a biological arousal improving attention in the symptomatic group and thereby contributing to the improved performance.