impressions of the environment which enter through the "sense channels" such as the eyes and optic nerves, the nose and olfactory (of the sense of smell) nerves; the ears and aural (of the sense of hearing) nerves; interbody nerves for interbody perceptions, etc., by means of physical waves, rays and particles of the physical universe. Also an Awareness Level represented on the org board of a Scientology organization. See also org board and Awareness Level in this glossary. —OEC - The Lowest Levels App Mar 91