ID Number		1251
Study Type		Human / Provocation
Model		900 MHz (GSM) exposure to humans and analysis of cognitive function and memory
Details		Human subjects (n=28) were exposed to 900 MHz GSM RF for 6 weeks, 5 days/week, 2 hours/day, for 28 days with a 13-hour rest period including a night's sleep between exposure and assessment of cognitive effects. Exposure was performed using a mobile phone while volunteers watched an emotionally neutral movie on television (the mobile played the movie sound track). The exposure series was followed by 14 days of rest and a final assessment on day 45. Subjects were given a baseline neuropsychological assessment on day 2, with additional neuropsychological assessments on days 17 and 32. SAR was estimated at 0.54 W/kg using a phantom head model. Subjects were examined for information processing, attention capacity, memory function, and executive function. The authors report no effect of RF exposure. The authors admit these data do not fully address acute effects (with no rest in between exposure and assessment), very long exposure periods of several months or years, or very intensive use (more than 2 h/day).
Findings		No Effects
Status		Completed With Publication
Principal Investigator		University of Montpillier, France - biomed@zeus.sc.univ-montpl.fr
Funding Agency		CoMoBio, France
Country		FRANCE
References		Besset , A et al. Bioelectromagnetics, (2005) 26:102-108
Comments		Information processing speed was measured using computerized visual reaction time tasks, attention capacity was measured using a number sequence task (the digit span forward), a block tapping task (spatial span forward), a writing task (the modified Stroop task), and a figure cancellation test. Memory function was measured by asking the subjects to recall a 15-word list; they also used reverse-order number sequence and reverse-order block tapping tasks, as well as a task in which subjects were asked to separate a series of numbers and letters and list them in ascending or alphabetic order. Executive function was measured in a series of tests involving placing pins in holes on a board and assembling the pins with washers and collars. The findings contrast those of Preece, initial findings of Koivisto (Haarala et al. failed to confirm), and others that reported faster reaction time during or immediately after a short RF exposure