Listen to High Mental Activity: 40 Hz Gamma Waves & Subliminal Messages online. High Mental Activity: 40 Hz Gamma Waves & Subliminal Messages is an Unknown language song and is sung by Mark Cosmo. High Mental Activity: 40 Hz Gamma Waves & Subliminal Messages, from the album The Ultimate Subliminal Study, Focus & Concentration Kit: Binaural Beats, Alpha Waves, Gamma Waves, Theta Waves & Isochronic Tones, was released in the year 2020. The duration of the song is 5:10. Download Unknown songs online from JioSaavn.