PSYB65H3 Chapter Notes - Chapter 5: Comorbidity, Pallidotomy, Tourette Syndrome
Document Summary
Relies on somatosensory feedback from joints, tendons, muscles and skin. Brains organize movements in parallel and hierarchical system that relies heavily on functional segregation. We rely on feedback from somatic sensation. When tongue is numb at dentists you tend to make inaccurate movements and bite your tongue more. G. o. a man with destruction of somatosensory nerves in both arms. Can"t perform intricate motor skills because he doesn"t know position of his own arms, how strong his grip is, and whether he was maintaining a constant level of muscle contraction. These adjustments we make are automatic, don"t need higher cortical areas. 3 types of information: nociception: pain and temperature, hapsis: touch and pressure, proprioception: awareness of body and its position is space. Most sensory receptors are mechanoreceptors: react to bending or stretching. They wrap arund hairs that cover our body so we can feel our hiar. It stretches or deforms follicle when hair is moved which then activates mechanoreceptors.
