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In a first experiment, several parameters (see methods) were measured in the probands for 1.5 to 2 minutes by a polygraph (popularly referred to as a lie detector). Afterwards, a helmet containing the coils was put on and the volunteer was exposed to the magnetic field for 4.5 to 5 minutes while the measurement parameters were recorded. In a second experiment, the helmet was directly put on. Parameters were recorded for 1.5 minutes without the magnetic field. Then the magnetic field was switched on for 2 minutes (75-80 A/m). Afterwards, the magnetic field was switched off and the recording proceeded for 1 minute. This procedure was followed by an additional exposure for 1.5 minutes to a stronger magnetic field strength (150-160 A/m) while parameters were recorded. 60 probands were examined (male and female). However, it is not clear if all probands took part in both experiments and if both experiments were conducted on the same day.
special helmet with six coil windings; originally designed to protect from magnetic fields but here used to expose the human head; two coils were powered usually (remark EMF-Portal: not stated which coils were powered)