The effects of an acute ear exposure of human probands to an 882 MHz electromagnetic field from a mobile phone on graviperception should be investigated.
In the first part of the study, electrosensitive probands (cases, n=9) were compared with persons without subjective complaints (control, n=21). First, all probands were examined without exposure to determine the baseline. Afterwards, each proband was exposed to a continuous signal (CW), pulsed signal (GSM) and sham exposure in random order by strapping a mobile phone to the right and left ear, respectively. This part was conducted on the same day, with the same probands and same exposure conditions as Bamiou et al. 2008. However, the results of the first test indicated an effect of the pure weight of the mobile phone on graviperception. This was checked in a second experiment with solely probands without complaints (n=18) using a turned-off mobile phone.
| Frequency | 882 Hz |
|---|---|
| Type | |
| Exposure duration | continuous for 2 x 30 minutes (30 minutes per ear) |
| Modulation type | CW |
|---|
| Exposure source | |
|---|---|
| Chamber | probands were seated on a chair with chin rest in a dark room in front of the test display |
| Setup | exposure system consisted of a headband mounted mobile phone that could emit GSM-modulated signals (GSM-mode) and signals without modulation (continuous signal) with the same mean power and heating of less than 1°C in each mode; mobile phone could be adjusted in either right- or left-handed positions against the head in a geometry simulating a call |
| Sham exposure | A sham exposure was conducted. |
In the first part of the study, no significant differences could be found either between control group and case group (electrosensitive probands) under the different conditions of exposure or between the different exposure conditions and the baseline within each group. However, a significant difference from the baseline depending on the side of the strapped mobile phone was found in all groups and under all conditions of exposure. In the second part of the study, the significant effect of the strapping side of the mobile phone on the test outcome was verified.
The authors conclude that an ear exposure to a 882 MHz electromagnetic field from a mobile phone has probably no effects on graviperception. However, the weight of the mobile phone, which was strapped to either one side of the head in the experiment, can influence the perception of verticality.
This website uses cookies to provide you the best browsing experience. By continuing to use this website you accept our use of cookies.
