one continuous line drawing of half human brain and love heart logo icon. psychol

line font drawing cartoon diagram circle sketch artwork wheel organ logo wing iron brand psychology brain icon vector isolated white education health medical black graphic medicine science idea body study anatomy scientific system intelligence human memory anatomical mental neurology physiology wisdom educational outline intellect cerebellum sensory cerebrum cerebral hypothalamus brainstem side head internal mind nervous think one continuous love heart shape psychological split affection logotype symbol template couples icon