ABSTRACT
This chapter explores and analyzes methods for using repetitive or rhythmic stimulation in the context of electroencephalography (EEG) neurofeedback protocols. In furthering the field, both the short-term and long-term EEG and clinical effects of the stimulation must be studied in order to produce a coherent scientific and clinical rationale. Further rationale for using in neurofeedback includes the observation that transient evoked potentials exhibit correlations with attention and mental task. T. M. Srinivarsan described a direct method in the intensity of the photic stimulation was directly related to the instantaneous amplitude of the subject's EEG alpha wave. Thomas F. Collura has described a non-volitional method that employs selective photic stimulation at a predetermined flicker frequency, but which is presented contingent on the EEG meeting certain criteria. The chapter demonstrates the capability of EEG-controlled photic stimulation when applied in an extinction-learning model to reduce excess theta activity. The method was based on a means of reducing theta activity by non-volitional EEG-controlled training.
