Study type: Medical/biological study (experimental study)

Effects of thirty-minute mobile phone exposure on saccades. med./bio.

Published in: Clin Neurophysiol 2007; 118 (7): 1545-1556

Aim of study (acc. to author)

To study whether exposure to a pulsed radiofrequency electromagnetic field emitted by a mobile phone has short-term effects on saccade (a special eye movement) performances.

Background/further details

The performance of different saccade tasks before and after exposure or sham exposure were studied in 10 normal subjects.

Endpoint

Exposure

Exposure Parameters
Exposure 1: 800 MHz
Modulation type: pulsed
Exposure duration: continuous for 30 min
  • power: 0.8 W peak value
  • power: 0.27 W mean
  • SAR: 0.054 W/kg average over mass (10 g) (± 0.02 W/kg)

Exposure 1

Main characteristics
Frequency 800 MHz
Type
Exposure duration continuous for 30 min
Modulation
Modulation type pulsed
Pulse width 6.7 ms
Duty cycle 33.5 %
Repetition frequency 50 Hz
Additional info

π/4 shifted QPSK; three channel TDMA with 20 ms frame length and 6.7 ms time slot

Exposure setup
Exposure source
  • cellular phone
  • connected to a communication tester, set to maximum output
Distance between exposed object and exposure source 3 cm
Chamber The setup was the same as that described in [Arai et al., 2003] and [Terao et al., 2006].
Setup The handset was held over the right ear in a normal use position with the antenna located about 2 cm from the head and about 3 cm from the brain tissue.
Sham exposure A sham exposure was conducted.
Additional info The subjects spoke to an examiner but not on the phone. The audio circuitry of the phone was disabled.
Parameters
Measurand Value Type Method Mass Remarks
power 0.8 W peak value - - -
power 0.27 W mean - - -
SAR 0.054 W/kg average over mass measured 10 g ± 0.02 W/kg

Reference articles

Exposed system:

Methods Endpoint/measurement parameters/methodology

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

Main outcome of study (acc. to author)

Mobile phone exposure had no significant short-term effect on saccade performances.

Study character:

Study funded by

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