PSYCH 1XX3 Lecture Notes - Tongue Map, Hydrocephalus, Temporal Lobe
Document Summary
Seeking out food and drink is a fundamental goal-directed behavior: moving body needs regular nourishment to function optimally, result: much of the day is structured around times of feeding. Food and drink are more than nutrition: have a social aspect, bringing family and friends together. Life is dominated by consumption of food and drink. Most of human evolutionary past: food sources scarce, behaviors motivated by constant need to obtain food and nutrients essential for survival. Present: calories are available cheaply and easily; evolutionary-driven behaviors out of place. Feeding behaviors are partly motivated by hunger and satiety signals. Food doesn"t taste the same without sense of smell: feeding guided largely by interaction of taste and smell senses. Morning breakfast preceded by longest period of fasting in daily cycle (overnight) When fasting, one of the main reasons for hunger is low blood glucose levels. Glucose: keeps body"s functions operating, preferred source of energy for brain.
