PSY 308 Lecture Notes - Lecture 14: Splanchnic Nerves, Vagus Nerve, Duodenum
Document Summary
Social/cultural factors: people eat more when they are with others than when alone, eating with others is a way of socializing. In the us, people eat more on weekends. The brain: the brain gets messages from, mouth, stomach. Intestines: feeding is vital behavior for individuals and species. Stomach and intestines chewing: the stomach and intestine convey satiety messages to the brain, experiment, attach inflatable cuff to connection between stomach and intestine. It takes about half an hour for cck to make it to the brain and make you feel satiety: pancreatic hormones (insulin and glucagon) If insulin levels stay high for very long: body continues to move bg into the cells, including liver cells and fat cells that store it, consequently, bg levels drop. Important brain parts: hypothalamus, lateral hypothalamus, damage to lh: animal refuses food; may starve to death unless force-fed, stimulation of lh: increases feeding and food-seeking, neural activity increases in lh in presence of food.
