Misc.

Isochronic 40Hz Gamma audio frequency pure tone sine-wave. Has the effect of synchronizing cell firing in populations of cells in the human brain. Neural entrainment is more effective without accompanying sounds that disrupt the consistency of the frequency. Gamma frequency believed to improve concentration. Leave a comment as to your experience and let me how long you listened. 40Hz auditory evoked potentials in the brain produce activity unrelated to the organization of the auditory cortex, which is believed to be a resonant frequency which appears to effect the visual cortex.