PSYC 1030H Lecture Notes - Lecture 2: Ventromedial Nucleus Of The Hypothalamus, Procrastination, Ghrelin

• School: Trent University
• Department: Psychology
• Course: PSYC 1030H
• Professor: Brenda Smith- Chant

Document Summary

Starting, directing, and maintaining physical and psychological activities. Always from unpleasant (going out in the cold) Eating when you aren"t really hungry, watching scary movies, social situations, taste, etc. Needs at each level must be satisfied before next higher level can be achieved. Denied rats food and water create hunger" and thirst" tensions. Place in a new environment lots of opportunities to satisfy hunger/thirst. Rats instead explored didn"t eat/drink until curiosity satisfied. Eating: accomplishes via 4 tasks: detect internal food need. Initiate and organize eating behaviour: monitor the quantity and quality of food, detect when enough food eaten and stop. Later work: stomach contractions not necessary for hunger. Can eat less of a single food than of offered a variety (buffets, dessert) Brain is involved in perception of hunger. These area seem to monitor blood sugar levels. Ghrelin: released prior to eating (creates appetite) Triggers appetite", may respond to sight of food, diet cola .