Study type: Medical/biological study (experimental study)

Physiological effects of RF exposure on hypersensitive people by a cell phone. med./bio.

Published in: IEEE 30th Annual International Conference of the Engineering in Medicine and Biology Society (EMBC), 2008. IEEE, 2008, ISBN 9781424418145: 2322-2325

Aim of study (acc. to author)

To investigate the effects of radio frequency exposure with a CDMA cellular phone on autonomic changes (e.g. heart rate) in an electromagnetic hypersensitivity group and whether electromagnetic hypersensitivity resulted from autonomic changes.

Background/further details

18 electromagnetic hypersensitivity volunteers (8 males) and 19 normal volunteers (10 males) were exposed and sham-exposed during two days in randomized order. Physiological data were collected at four different times: during rest, after 15 min continuous exposure, after 31 min continuous exposure, 10 min after exposure termination.

Endpoint

Exposure

Exposure Parameters
Exposure 1: 824.64–848.37 MHz
Exposure duration: continuous for 31 min

Exposure 1

Main characteristics
Frequency 824.64–848.37 MHz
Type
Exposure duration continuous for 31 min
Exposure setup
Exposure source
Setup folder-type CDMA phone attached to the left side of a headphone, lower part of the phone wrapped with 5 mm thick insulating material, phone set to test mode
Sham exposure A sham exposure was conducted.
Parameters
Measurand Value Type Method Mass Remarks
power 300 mW - - - -
SAR 1.6 W/kg - - - -

Exposed system:

Methods Endpoint/measurement parameters/methodology

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

Main outcome of study (acc. to author)

The radio frequency exposure by a CDMA cellular phone did not have any effects on the physiological parameters for both groups. Regarding the subjective symptoms, both groups did not significantly differ between real and sham exposure. The perception accuracy of the exposure and sham exposure for the electromagnetic hypersensitivity group was 42.2 % and 73.9% and for the control group 3.0% and 95.1%.
The results on perception accuracy could be attributable to the fact that many subjects in the electromagnetic hypersensitivity group answered "Yes" to the question "Do you feel the electromagnetic field?" because they thought as if they could feel the electromagnetic field.In contrast, the control group revealed higher accuracy in perception to the non-exposure because they considered themselves that they could not feel electromagentic fields.

Study character:

Study funded by

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