PSY100H1 Chapter Notes - Chapter 11.1: Methamphetamine, Lateral Hypothalamus, Cholecystokinin

• School: UTSG
• Department: Psychology
• Course: PSY100H1
• Professor: Dan Dolderman

Document Summary

Motivation: physiological and psychological processes underlying the initiation of behaviours that direct organisms toward specific goals. Drive: biological trigger that tell us we may be deprived of something and causes us to seek out what is needed, such as food or water. When the drive is satisfied, reward centers in the brain become activated, reinforces (cid:271)eha(cid:448)iour so (cid:449)e"ll likel(cid:455) do it agai(cid:374) Homeostasis: (cid:271)od(cid:455)"s ph(cid:455)siologi(cid:272)al processes that allow it to maintain consistent internal states in response to the out environment. Allostasis: motivation is also influenced by anticipation of future needs. Eati(cid:374)g ca(cid:374)d(cid:455) e(cid:448)e(cid:374) (cid:449)he(cid:374) (cid:455)ou"re full (cid:449)hile (cid:455)ou"re (cid:374)er(cid:448)ous. Stimulating lateral hypothalamus: causes rats to eat (on switch) Stimulating ventromedial region: causes rats to stop eating (off switch: damage here (ventromedial region) causes obesity. Main function of hypothalamus: monitor blood chemistry for indicators of the levels of sugars and hormones involved in energy. Glucose: sugar that serves as a primary energy source for the brain and body.