To investigate several UMTS signal types and exposure positions for potential effects on cerebral blood flow.
Right handed male subjects (n=8) underwent eight measurements on different days. A measurement consisted of 15 exposure and recovery cycles.
Exposure | Parameters |
---|---|
Exposure 1:
1.9 GHz
Modulation type:
CW
Exposure duration:
20 s on - 60 s off for 15 cycles
|
|
Exposure 2:
1.9 GHz
Exposure duration:
20 s on - 60 s off for 15 cycles
base station like signal
|
|
Exposure 3:
1.9 GHz
Exposure duration:
20 s on - 60 s off for 15 cycles
|
|
Exposure 4:
1.9 GHz
Exposure duration:
20 s on - 60 s off for 15 cycles
|
|
Frequency | 1.9 GHz |
---|---|
Type | |
Exposure duration | 20 s on - 60 s off for 15 cycles |
Additional info | base station like signal |
Exposure source |
|
---|
Measurand | Value | Type | Method | Mass | Remarks |
---|---|---|---|---|---|
SAR | 1.8 W/kg | peak value | calculated | 10 g | - |
No statistically significant differences between exposure and recovery were found regarding the content of deoxyhemoglobin, oxyhemoglobin and total hemoglobin for any condition and measurement parameter. Hence, no differences in the cerebral blood flow were found.
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