Study type: Medical/biological study (experimental study)

No effect on cognitive function from daily mobile phone use med./bio.

Published in: Bioelectromagnetics 2005; 26 (2): 102-108

Aim of study (acc. to author)

To study the effects of electromagnetic fields on cognitive function during a daily exposure with normal use of a mobile phone, in which the exposure duration is constant.



Exposure Parameters
Exposure 1: 900 MHz
Modulation type: pulsed
Exposure duration: repeated daily exposure, 2 h/day, 5 days a week for 28 days
  • SAR: 0.54 W/kg unspecified (unspecified)

Exposure 1

Main characteristics
Frequency 900 MHz
Exposure duration repeated daily exposure, 2 h/day, 5 days a week for 28 days
Modulation type pulsed
Pulse width 0.576 ms
Repetition frequency 217 Hz
Exposure setup
Exposure source
Setup Subjects held the mobile phone with their preferred hand and the listening ear was not changed during the exposure.
Additional info Two groups of subjects were formed that were either exposed or sham exposed (double blind) during the exposure period of 28 days. During the recovery period of 14 days all the subjects were sham exposed.
Measurand Value Type Method Mass Remarks
SAR 0.54 W/kg unspecified measured unspecified -

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Time of investigation:
  • before exposure
  • during exposure
  • after exposure

Main outcome of study (acc. to author)

The findings indicate that daily mobile phone use has no effect on cognitive function after a 13 h rest period. However, this study is limited to medium term effect. It does not allow the authors to assert that a longer exposure or very intense use could not have long lasting effect on cognitive function.

Study character:

Study funded by

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