No effects of mobile phone use on cortical auditory change-detection in children: an ERP study.
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Date
2010-03-15
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Abstract
We investigated the effect of mobile phone use on the auditory sensory memory in children Auditory event related potentials ERPs P1 N2 mismatch negativity MMN and P3a were recorded from 17 children aged 11 12 years in the recently developed multi feature paradigm This paradigm allows one to determine the neural change detection profile consisting of several different types of acoustic changes During the recording an ordinary GSM Global System for Mobile Communications mobile phone emitting 902 MHz pulsed at 217 Hz electromagnetic field EMF was placed on the ear over the left or right temporal area SAR 1g 1 14 W kg SAR 10g 0 82 W kg peak value 1 21 W kg The EMF was either on or off in a single blind manner We found that a short exposure two 6 min blocks for each side to mobile phone EMF has no statistically significant effects on the neural change detection profile measured with the MMN Furthermore the multi feature paradigm was shown to be well suited for studies of perception accuracy and sensory memory in children However it should be noted that the present study only had sufficient statistical power to detect a large effect size