DIFFERENTIAL ENTRAINMENT OF ELECTROENCEPHALOGRAPHIC ACTIVITY BY WEAK COMPLEX ELECTROMAGNETIC-FIELDS

The hypothesis was tested that compensatory susceptibility to electroe ncephalographic driving and entrainment by weak (1 microT) time-varyin g, externally applied complex magnetic fields would occur in normal su bjects following successive stimulation by different patterns. 43% of the volunteers showed evidence of driving during the application of th e complex magnetic fields and indications of resonance (entrainment) d uring the first 10 sec. following the cessation of the fields. The vol unteers who exhibited driving and entrainment could be discriminated f rom those who did not by their more frequent reported experiences of f ear and odd tastes during the stimulation. They were also more Likely to have a preexposure history of a sense of presence and to experience intense meaningfulness when reading or writing prose or poetry.