PSYB65H3 Chapter 5: Chapter 5 - The Sensorimotor System
Document Summary
Accurate movements depend on our ability to monitor the position and placements of our body and its parts, which relies on somatosensory feedback from out joints, tendons, muscles, and skin. Role of somatosensory feedback in production of movements is illustrated by former darts champion called. G. o, who experienced almost complete destruction of somatosensory nerves in both arms due to an infection. Somatosensory information that we receive about the world comes from sensory receptors in skin (i. e. vibration, pain, pressure and touch) The types of receptors are usually functionally grouped into 3 types: nociception: sensations of pain and temperature, hapsis: sensation of fine touch and pressure, proprioception: awareness of the body and its position in space. Most skin receptors in skin are mechanoreceptors react to distortion such as end or stretching. Many different types of mechanoreceptors throughout the body, although most are axons that have mechanosensitive ion channels (axons that contain these ion channels are primary afferent axons that enter.
