To study whether cutaneous microcirculation may be influenced by weak alternating magnetic fields in the magnitude of everyday life.
In seven healthy volunteers and in three persons convinced to suffer from electromagnetic hypersensitivity the microcirculation of the right thumb was determined.
| Exposure | Parameters |
|---|---|
|
Exposure 1:
50 Hz
Exposure duration:
intermittent, 25 min field on, 25 min field off (50 min)
|
|
|
Exposure 2:
50 Hz
Exposure duration:
intermittent, 5 min field on, 5 min field off for 50 min
|
|
| Frequency | 50 Hz |
|---|---|
| Type | |
| Waveform |
|
| Polarization |
|
| Exposure duration | intermittent, 25 min field on, 25 min field off (50 min) |
| Additional info | Magnetic field was circularly polarized |
| Exposure source | |
|---|---|
| Setup | subjects laid on the bed placed within the triangular coil structure; the right arm of the subject was placed at heart level and the thumb was positioned in the center of the magnetic field by putting the hand on a special splint. |
| Measurand | Value | Type | Method | Mass | Remarks |
|---|---|---|---|---|---|
| magnetic flux density | 96 µT | unspecified | measured | - | in the center of the coils |
| Frequency | 50 Hz |
|---|---|
| Type | |
| Waveform |
|
| Exposure duration | intermittent, 5 min field on, 5 min field off for 50 min |
| Additional info | Magnetic field was circularly polarized |
| Exposure source |
|
|---|
| Measurand | Value | Type | Method | Mass | Remarks |
|---|---|---|---|---|---|
| magnetic flux density | 96 µT | unspecified | measured | - | in the center of the coils |
The magnetic field exposure did not influence cutaneous microcirculation of the thumb in healthy volunteers and in persons suffering from self-reported electromagnetic hypersensitivity. It was possible to produce significant changes of laser-Doppler-flow by both reactive hyperemia and hyperventilation independently from field status.
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