PSYC 101 Lecture Notes - Lecture 11: Ventromedial Nucleus Of The Hypothalamus, Lateral Hypothalamus, Polyphagia
Document Summary
Motivation: the interval state of condition that activates and gives direction to our thoughts, feelings and actions (behavior). Emotion: positive or negative feelings, generally, in reaction to stimuli- that are accompanied by biological changes (physiological arousal) and related characteristics behavior. Q: what a(cid:396)e (cid:862)p(cid:396)i(cid:373)a(cid:396)y(cid:863) (cid:373)oti(cid:448)es: eat, sleep to stay alive. What might some of these needs be: food, water, warmth, safety, and sex. Homeostasis: biological thermostats regulated by homeostasis (homeostatic) mechanisms. Q: what part of the body controls hunger. Hyperphagia no satiety center: normal hunger cues: Stomach contractions (cues-> lateral hypothalamus: blood sugar levels glucose helps regulate hunger; - glucagon enters blood stream and no more hunger. Body fat levels set point to reduce eating; increase cell metabolism. Psychological factors: maturation and learning by experience (learning???, religious and cultural beliefs, emotions. Thirst: regulation of water intake: mouth dryness, cell fluid levels chemically signal pituitary gland and antidiuretic hormone (adh) enters blood stream.
