EEG spectrum analysis techniques applied to the problem of psi phenomena.

Electroencephalographic techniques were used to study unusual sensory capabilities. One S, the "sender," of a pair of Ss was stimulated with 10 sec duration trains of flicker at 6 or 16 fps, randomly interspersed with periods of no flicker. EEGs were recorded from another S, the "receiver," to determine if EEG driving or alpha block would be evident on trials when the sender was stimulated, compared to when the sender was not stimulated. Differential alpha block on control and stimulus trials was observed reliably in one receiver, indicating some information transfer. The S's overt indications of which stimulus occurred were not different from what would be expected by chance. The physical parameters by which the EEG effect was mediated were not determined.