ID Number		1767
Study Type		Human / Provocation
Model		Mobile phone use and effects on EEG, cognitive function, and personality
Details		Mobile phone users (n = 300) from New York, Rhode Island, Nijmengen, London, Adelaide, and Sydney were recruited to determine correlations between time of mobile phone use and EEG, cognitive function, and personality measures. History of mobile phone use was determined by questionairre, and the authors classified the top 100 users as heavy use, the next 100 as intermediate, and 100 nonusers as controls. Volunteers came into the study lab for testing. The authors report mobile phone use correlated with increased concentration as measured on a word interference test, and suggest that heavy users may make calls in busy environments causing them to exercise increased concentration. The authors also report mobile phone use correlated with an increased delta and theta and decreased alpha spectral power, although alpha rhythm did not follow a dose response and was highest in controls, next in heavy users, and lowest in intermediate users. Alpha peak frequency also did not corroborate the above findings, and was lower in heavy users than in controls and intermediate users. The authors finally report that mobile phone users were more extraverted and "open" in personality tests than non users, and these findings may have influenced the EEG results.
Findings		Effects
Status		Completed With Publication
Principal Investigator		Brain Resource Company, Nijmegen, The Netherlands
Funding Agency		BIAL, Portugal
Country		NETHERLANDS
References		Arns, M et al. Int J Neurosci, (2007) 117:1341-1360
Comments		Mobile phone use categories do not necessarily reflect general population, just the top and bottom 100 of their recruit population. Further, the stratification did not fall out around the median time of use, so the categories may be rather arbitrary.