PSYCH 3M03 Study Guide - Midterm Guide: Thalamic Reticular Nucleus, Anterior Pituitary, Adrenal Medulla

• School: McMaster University
• Department: Psychology
• Course: PSYCH 3M03
• Professor: Aadil Merali Juma

Document Summary

Adaptive value disincentive for maladaptive and self-injurious behaviour; punishes activity when rest and recovery are needed. Physiology nocireceptors send messages to spinal cord via fibers, where they synapse on tracts leading to the brain. Psych 3m03: nocireceptors free nerve endings that respond to mechanical damage and thermal stimuli found in many organs (except the brain) Fibers synapse in the dorsal horns of the spinal cords; nerve does not go straight to the brain, chemical transition must occur; message can be blocked by endorphin dynamics and interneurons (show axons) C-fibres unmyelinated; slow, dull and aching pain. A -fibers thick, myelinated; sharp and fast pricking pain; quickly subsides: tracts to the brain (5 total) Spinothalamic to the thalamus; thalamus relays information to other parts of body; related to emotion and consciousness because of links to cortex. Two mechanisms for adapting to temperature variations: autonomic responses reflexes control bodily temperatures;