Proprioception refers to the unconscious awareness and perception of joint and body movements, as well as the position of the body in space (Sherrington, 1906; as cited in Fisher et al., 1991:84 ). It is “sensory information caused by the contraction and lengthening of muscles and the bending, straightening, pulling, and compression of joints between bones” (Ayres, 2005:41). Muscles and joints constantly send information to the brain about the body's position in space. However, most proprioceptive input does not reach consciousness except when one deliberately focuses awareness on it (Ayres, 1974:41). In previous literature, a differentiation has been made between kinesthesia (conscious joint proprioception) and unconscious proprioception. However, researchers have begun to use these terms synonymously (Fisher et al., 1991:84). Proprioception is related more specifically to the spatial orientation of the body and body parts in space, the speed and timing of movement, the force exerted by the muscle, and the speed and intensity with which a muscle is stretched. It plays an important role, together with the tactile and vestibular system, in developing knowledge of one's body and its movements in order to plan motor actions (Fisher et al., 1991:84). It provides the motor system with a clear map of the external environment and the body (Matthews, 1988; cited in Fisher et al., 1991:84) so ​​that, during the movement, the brain can correctly plan the next movement and contract the muscle right at the right time (Ayres, 2005:41). It is important to note that active (internally generated) movement provides specific resistance to the muscles and maximum proprioceptive input, while passive (externally generated) movement provides...... middle of the paper......of these two sensory systems (Fisher et al., 1991:109). Ayres (1989; cited in Fisher et al., 1991:109) referred to the combination of tactile and proprioceptive input as somatosensory processing. These two systems are believed to play a primary role in early development and serve as the foundation for later social, emotional, and academic learning (Fisher et al., 1991:109). Sensory integration theory provides an understanding of the relationship between the central processing of tactile input and behavior. It offers explanations for why some individuals respond negatively to certain types of tactile stimuli. It also helps to understand the relationship between tactile discrimination problems such as haptics, perception, and motor planning (Fisher et al., 1991:108). Tactile stimulation and exploration through touch are essential for development (Ayres, 2005:40)