Tactile perception refers to perception mediated solely by vari- ations in cutaneous stimulation. Two examples are the perception of patterns drawn onto the back and speech perception by a "listener" who senses speech information by placing one hand on the speaker's jaw and lips (the Tadoma method of speech reception). It is recognized that tactile perception always occurs within the context of a particular static posture, and that tac- tile perception sometimes depends upon what that posture is. However, provided that the posture remains constant, the vari- ations in stimulation that control tactile perception are solely cutaneous.