No effect on cognitive function from daily mobile phone use.
The increasing use of mobiles phones (MP) has raised the problem of the effects of daily electromagnetic fields (EMF) exposure on human health. To date several studies have been published concerning the effects of acute MP exposure on psychomotor performances. This study investigated the effects of daily exposure to GSM 900 type MP on cognitive function. Fifty-five subjects (27 male and 28 female) were divided into two groups: a group with MP switched on and a group with MP switched off. The two groups were matched according to age, gender, and IQ. This double blind study lasted for 45 days and was divided in three periods: baseline (BLP, 2 days), exposure (EP, 27 days), and recovery (RP, 13 days). Subjects were exposed during EP and sham exposed during RP for 2 h/day, 5 days/week. The neuropsychological test battery composed of 22 tasks screened four neuropsychological categories: information processing, attention capacity, memory function, and executive function. This neuropsychological battery was performed four times on day 2 (BLP), day 15 (EP), day 29 (EP), and day 43 (RP). Our results indicate that daily MP use has no effect on cognitive function after a 13-h rest period.
Besset
Alain
A
Institut National de la Santé et de la Recherche Médicale, E 0361 Montpellier, France. besset@montp.inserm.fr
Espa
Fabrice
F
Dauvilliers
Yves
Y
Billiard
Michel
M
de Seze
René
R
D000293:Adolescent; D000328:Adult; D001288:Attention / Q000502:physiology / Q000528:radiation effects; D040421:Cell Phone; D003071:Cognition / Q000502:physiology* / Q000528:radiation effects*; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D008297:Male; D008568:Memory / Q000502:physiology / Q000528:radiation effects; D008872:Microwaves; D009483:Neuropsychological Tests; D011930:Reaction Time / Q000502:physiology / Q000528:radiation effects