PSY333H5 Lecture Notes - Homeostasis, Cortisol, Heart Rate Variability
Document Summary
Autonomic nervous system: stress, via this system the brain gets ready and reacts. More psychologically focused, pupils dilated, glucose is released into bloodstream. Parasympathetic: recovery after the stress has passed. The body"s ability to move back and forth from sympathetic and parasympathetic activation is a very good indicator/predictor of later disease. Brodmann"s areas: cellular structure stained to identify regions of the brain. Thalamus: every signal passes through the thalamus (decides if the signal is important and where it should go). Homeostasis: ex. body"s temperature has to be at a set point of 37 . Allostasis: configurations of the body change due to context (body adjusts to the stress). Control the stress response properly" just like pain. Peripheral blood flow constricted: ex. hands get cold when nervous. Stresses that are unpredictable, uncontrollable tend to be perceived as high stressful (people who have jobs that present unpredictable problems tend to feel more stressful then people"s whose jobs are predictable).
