One: Concepts. - 1 Motivational Concepts: Definitions and Distinctions. - 2 Instinct and Motivation as Explanations for Complex Behavior. - Two: Hunger and Thirst. - 3 Taste: A Model of Incentive Motivation. - 4 Brain-Stem Control of Ingestive Behavior. - 5 Satiety and the Problem of Motivation. - 6 Physiological and Behavioral Basis of Human Obesity. - 7 The Physiology of Thirst. - Three: Thermal Maternal and Sexual Motivation. - 8 Are There Similarities Between Thermoregulation and Sexual Behavior?. - 9 Hormonal and Neural Mechanisms Underlying Maternal Behavior in the Rat. - 10 Neurobiological Mechanisms of Sexual Motivation. - Four: Approach vs. Avoidance in Motivation and Emotion. - 11 The Opponent Processes in Acquired Motivation. - 12 Brain-Stimulated Reward and Control of Autonomic Function: Are They Related?. - 13 Brain Mechanisms in Hedonic Processes. - 14 Motivation and Psychological Stress. - 15 A Physiological and Psychological Analysis of Pain: A Potential Model of Motivation. Language: English