Study type: Medical/biological study (experimental study)

Evaluation of the Health Impact of the Radio-Frequency Fields from Mobile Telephones. med./bio.

Published in: Indoor Built Environ 2001: 284-290

Aim of study (acc. to editor)

To study the effects of radiofrequency electromagnetic fields from mobile phones on human health.

Background/further details

Healthy and epileptic subjects participated.

Endpoint

Exposure

Exposure Parameters
Exposure 1: 900 MHz
Modulation type: pulsed
Exposure duration: continuous for 1 h
to study effects on auditory system and nervous system
Exposure 2: 900 MHz
Modulation type: pulsed
Exposure duration: repeated daily exposure, 2 h/day, 5 days/week, for 4 weeks
to study effects on endocrine system

Exposure 1

Main characteristics
Frequency 900 MHz
Type
Exposure duration continuous for 1 h
Additional info to study effects on auditory system and nervous system
Modulation
Modulation type pulsed
Pulse width 576 µs
Duty cycle 12.5 %
Repetition frequency 217 Hz
Additional info

GSM

Exposure setup
Exposure source
Sham exposure A sham exposure was conducted.
Parameters
Measurand Value Type Method Mass Remarks
power 2 W peak value - - -
power 0.25 W mean - - -

Exposure 2

Main characteristics
Frequency 900 MHz
Type
Exposure duration repeated daily exposure, 2 h/day, 5 days/week, for 4 weeks
Additional info to study effects on endocrine system
Modulation
Modulation type pulsed
Pulse width 576 µs
Duty cycle 12.5 %
Repetition frequency 217 Hz
Additional info

GSM

Exposure setup
Exposure source
Setup Volunteers watched films of moderate emotional content. The sound was provided via modified standard telephones that were called by the subjects.
Additional info Obviously, an 1800 MHz DCS phone was also used.
Parameters
Measurand Value Type Method Mass Remarks
power 2 W peak value - - -
power 0.25 W mean - - -

Exposed system:

Methods Endpoint/measurement parameters/methodology

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

Main outcome of study (acc. to author)

No significant effect was found in the responses of the auditory brainstem or the endocrine system, but a slight increase, small but significant, was observed in various areas of the brain, in particular in the alpha wave and beta wave frequency band. The functional significance of this effect remains to be evaluated, as well as any possible health impact.

Study character:

Study funded by

Related articles