PSYC 1013 Lecture Notes - Lecture 14: Human Sexual Activity, Ventromedial Nucleus Of The Hypothalamus, Simon Levay
Document Summary
Motivation concerns the physiological and psychological process underlying the initiation of behaviours that direct organisms towards specific goals. Drive a biological trigger that tells us we may be deprived of something and causes us to seek out what is needed such as food and water. Homeostasis the (cid:271)od(cid:455)"s physiological process that allow it to maintain consistent internal states in response to the outer environment. Allostasis motivation that is not only influenced by current needs, but also by the anticipation of future needs. The on and off switches for hunger is found in the hypothalamus. Stimulating the lateral hypothalamus causes rats to begin eating and stimulating the ventromedial region of the hypothalamus causes rats to stop eating. Glucose a sugar that serves as a primary energy source for the brain and the rest of the body. Glucostats can detect glucose levels in the fluid outside of the cell and sends signals to the hypothalamus if food supply is low- hunger.
