Psychic refers to that which originates 'from the mind'.
Sorceresses of Rossak[edit | edit source]
During the Butlerian Jihad, and led by Zufa Cenva, the Soceresses of Rossak developed psychic abilities to literally boil the brains of cymeks and neo-cymeks in their brain canisters. This enheightened ability was usually preceded by intense mental focus by the Sorcerress, and then a gathering of static electricity around the practitioner. The resulting psychic blast would then boil the brains of the half-cyborgs, and unfortunately, any humans within radius of the outburst.
Bene Gesserit[edit | edit source]
Later, during the time near the end of the Corrino Empire and the Ascension of House Atreides, the Bene Gesserit Sisterhood would use psychic energy during their guilt-casting procedure. Typically, led by a sister who was a type of master at the practice, two or three others as well, would surround the pre-decided, intended victim