PSYC 302 Lecture Notes - Lecture 3: Substantia Nigra, Anatomical Terms Of Location, Biceps
Document Summary
The somatosensory and motor systems: chapter 5: somatosensory: set of specialized receptors and neural mechanisms responsible for body sensations and touch (including pain, motor system. Example of transduction with pacinian cells: at rest, each corpuscle surrounds an afferent nerve ending. A/c fibers synapse lateral spinal cord : neuropathic pain. Synapses on brain stem to periaqueductal gray . We think this is from poor neuroplasticity: what we do is use a mirror therapy. If you lose an arm or leg/ you will feel as if you still have the pain. Looking in the mirror and act like it is there. It tricks the sensory system into thinking that the arm is fine and still there: cingulate cortex, sits on top of corpus callosm, tells us how much discomfort we are in get input from somatosensory system. Drugs for pain aka analgesia or analgesics: gate control theory: block the ascending pain pathway.
