PSYC 327 Lecture Notes - Lecture 4: Migraine, Neurochemistry, Limbic System
Document Summary
Act of movement dampens signals - exercise regime may help. * the greatest difference among various animals brains us the amount of neocortex that each one has - still not sure about whales and dolphins. Paul maclean"s triune brain (3 levels of brain) Injury can occur without pain for a long time, or you can have an injury that pain lasts a long time, depends on the number of nerves. More nerves activated means more damaged > pain. Sensation: awareness of stimulation - basic information from sensory organs. Perception: the selection, organization and interpretation of information by the brain. Brain is always deciding what something is an fitting it into your brain brains best guess at what is seeing an trying to process. Nociceptors = high threshold somatosensory neural signals. Free nerve endings in skin and other organs. Responds to intense energy of various sorts.
