Study type: Medical/biological study (observational study)

Effect of prolonged use of mobile phone on brainstem auditory evoked potentials. med./bio.

Published in: J Clin Diagn Res 2015; 9 (5): CC07-CC09

Aim of study (acc. to author)

The effects of long-term GSM mobile phone usage on acoustic evoked brainstem potentials should be investigated.

Background/further details

100 healthy volunteers (69 women and 31 men) aged 18-30 years with no clinical evidence of hearing disorder were divided into the following groups depending upon their GSM mobile phone usage: 1) subjects using mobile phones for 1 to 5 years for <60 minutes/day (n=24), 2) subjects using mobile phones for 1 to 5 years for >60 minutes/day (n=16), 3) subjects using mobile phones for >5 years for <60 minutes/day (n=10), 4) subjects using mobile phones for >5 years for >60 minutes/day (n=17), 5) subjects who had never used any mobile phone (control group, n=33).
(remark EMF-Portal: the actual use of the mobile phone (i.e. calling, text messages, internet use) was not discriminated and it is not stated how the exposure was determined (e.g. via questionnaire)).

Endpoint

Exposure

Exposure Parameters
Exposure 1:
Exposure duration: cumulative mobile phone use of <60 minutes/day for 1-5 years
-
Exposure 2:
Exposure duration: cumulative mobile phone use of >60 minutes/day for 1-5 years
-
Exposure 3:
Exposure duration: cumulative mobile phone use of <60 minutes/day for >5 years
-
Exposure 4:
Exposure duration: cumulative mobile phone use of >60 minutes/day for >5 years
-

Exposure 1

Main characteristics
Frequency
Type
Exposure duration cumulative mobile phone use of <60 minutes/day for 1-5 years
Additional info GSM
Exposure setup
Exposure source
Parameters

No parameters are specified for this exposure.

Exposure 2

Main characteristics
Frequency
Type
Exposure duration cumulative mobile phone use of >60 minutes/day for 1-5 years
Additional info GSM
Exposure setup
Exposure source
Parameters

No parameters are specified for this exposure.

Exposure 3

Main characteristics
Frequency
Type
Exposure duration cumulative mobile phone use of <60 minutes/day for >5 years
Additional info GSM
Exposure setup
Exposure source
Parameters

No parameters are specified for this exposure.

Exposure 4

Main characteristics
Frequency
Type
Exposure duration cumulative mobile phone use of >60 minutes/day for >5 years
Additional info GSM
Exposure setup
Exposure source
Parameters

No parameters are specified for this exposure.

Exposed system:

Methods Endpoint/measurement parameters/methodology

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

Main outcome of study (acc. to author)

No significant differences were found between mobile phone user groups and the control group.
The authors conclude that there is no evidence for effects of long-term GSM mobile phone usage on acoustic evoked brainstem potentials.

Study character:

Study funded by

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