Dr. Jeff Tarrant discusses the role that gamma brainwaves play in expanded states of consciousness including flow states, lucid dreaming, psychedelics, specific meditative states, and the dying brain. This information serves as a foundation to understanding the relationship to gamma brainwaves and patterns seen in psychics, mediums, and healers.

This segment from a presentation by Dr. Jeff Tarrant explains some of the brain wave patterns measured while Laura Lynne Jackson conducted a psychic reading. Primary findings included an increase of activity in the Occipital Lobe (visual processing), especially in the gamma eeg band. At the same time there was a notable decrease of frontal beta activity, suggesting a relaxing of attention.