PSYB65H3 Chapter 5: Chapter 5 Notes
Document Summary
Accurate movements depend on our ability to moniter the position & placement of our body and its parts, which relies on somatosensory feedback from our joints, tendons, muscles, and skin. The somatosensory info we receive about the world comes from sensory receptors in the. A number of different sensations: vibration, pressure, pain, and touch. 3 types of receptors: nociception, hapsis: Awareness of body and its position in space. Regardless of function, most of the sensory receptors in the skin are mechanoreceptors. Spinal cord is organized into dorsal & ventral root ganglia: dorsal root ganglia: are somatosensory, ventral root ganglia: motor. 30 pairs of spinal nerves, each made up of dorsal and ventral roots that exit the spinal cord. 30 dorsal roots of spinal cord innervates different areas of the skin referred to as dermatomes. 2 main sensory pathways in the brain.
