PSY398H5 Lecture Notes - Lecture 4: Olfactory Bulb, Respiratory Rate, Limbic System
Document Summary
Analgesia: 1- chemical: hormones or chemical, endorphins- released from pituitary during stress, endorphin receptors concentrated in pag (periadueductal gray) and dorsal horn, crh (from paraventricular nucleus in hypothalamus)- induce. Acth from ant pit that goes to adrenal gland and causes release of glucocorticoids /steroids (zona fasiculata) this is the stress response: precursor to acth is b-endorphin, so it is released alongside with. Inc heart rate: pump more oxygenated blood, more likely to have energy. Inc in liberation of energy via fat and glucose: dec digestive response and gi, stomach, intestine function, and salivary provide energy after stressful event has left instead we get energy from fat and glucose, perspiration, vasoconstriction. Integration of sensory stimuli and memories during conditioning: single trial and sub threshold conditioning of fear. If it is removed the rat will no longer become fearful after single trials: cortical. Have info that helps audience follow along- like a picture from article.
