Zen and the Art of Horn playing

Recent research in neurophysiology has made clear to the West that which has been intuitively known in the East for over a thousand years: that we possess, in the two hemispheres of the brain, two independent modes of mental activity; and that these two modes can interfere with each other. The left hemisphere functions in reasoning, language, mathematics, and logic; the right hemisphere deals with intuition and sense and spatial perceptions.

The activities of the two have been described in many different ways. Left hemisphere: reason, ego, mind, intellect, ordinary mind, self, Self 1. Right hemisphere: intelligence of the body, no-mind (mushin), no-thought (munen), everyday mind (hei-jo-shin), original mind, Buddha nature, egolessness, one-mindedness, Heavenly Reason, Inmost Self, Primary Mind, the Unconscious, self-forgetfulness, pure consciousness, cosmic consciousness, state of emptiness, infant mind, universal mind, automatic self, Self, Self 2; also as the True You, since reasoning is considered to be something you can do, rather than something you are.