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Motivation, Part II

  • Hunger involves complex interactions among blood sugar, the hypothalamus, and the hormones grehlin, orezin, leptin, Peptide YY, Neuropeptide Y and GLP-1
  • Set point theory states that the proportion of body fat that is maintained by changes in hunger and eating; point where weight stays the same when you make no effort to gain or lose weight
  • External eating cues can trigger desire to eat food
  • Eating disorders include anorexia nervosa, bulimia nervosa, and binge-eating disorder
  • Arousal theory (Yerkes-Dodson Law) states people will do certain actions to maintain certain optimal levels of physiological arousal. If the level is too high, they will seek to relax. If level is too low, they will seek out action or something that stimulates them
  • Maslow’s Hierarchy of Needs is still taught despite not having the empirical evidence—very big in the business world
  • Link:

Motivation, Part II

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

  1. Intro
    • Hunger
    • More on Eating Behavior
    • Hyperphagic Rat
    • Taste Preferences: Biology and Culture
    • Eating Disorders
    • Obesity and Weight Control
    • Review
    • Intro 0:00
    • Hunger 0:10
      • Hypoglycemia: Low Blood Sugar (Glucose and Insulin)
      • Hypothalamus: Brain Structure; Regulates Many Aspects of Motivation and Emotion, Including Hunger, Thirst, and Sexual Behavior
      • Feeding System: Area in the Lateral Hypothalamus (LH) That, When Stimulated, Initiates Eating
      • Satiety System: Area in the Ventromedial Hypothalamus (VMH) That Terminates Eating
      • Hormones
    • More on Eating Behavior 2:07
      • Neuropeptide Y (NPY): Substance in the Brain That Initiates Eating; Works on Paraventricular Nucleus in Hypothalamus
      • Glucagon-like Peptide 1 (GLP-1): Substance in Brain That Terminates Eating
      • Set Point: Proportion of Body Fat That is Maintained by Changes in Hunger and Eating; Point Where Weight Stays the Same When You Make No Effort to Gain or Lose Weight
      • Basal Metabolic Rate: The Body's Resting Rate of Energy Expenditure
      • External Eating Cues -- Signals and Situations That Are Linked With Food (Includes Environment, People and Emotions -- Think Classical Conditioning)
    • Hyperphagic Rat 4:42
      • Picture of Rat Who Eats More Due to VMH Removal
    • Taste Preferences: Biology and Culture 6:03
      • Taste Preferences
    • Eating Disorders 9:21
      • Anorexia Nervosa: An Eating Disorder in Which a Person (Usually an Adolescent Female) Diets and Becomes Significantly (15 Percent or More) Underweight, Yet, Still Feeling Fat, Continues to Starve
      • Bulimia Nervosa: An Eating Disorder Characterized by Episodes of Overeating, Usually High-Calorie Foods, Followed by Vomiting, Laxative Use, Fasting, or Excessive Exercise
      • Binge-Eating Disorder: Significant Binge-Eating Episodes, Followed by Distress, Disgust, or Guilt, But Without the Compensatory Purging, Fasting, or Excessive Exercise That Marks Bulimia Nervosa
    • Obesity and Weight Control 11:14
      • Historical Explanations for Obesity
      • Obesity (Some Text Authors Focus on This a Lot, Others Not So Much)
    • Review 14:52
      • What Psychological Factors Produce Hunger?
      • What Psychological and Cultural Factors Influence Hunger?
      • How Do Anorexia Nervosa, Bulimia Nervosa, and Binge Eating Disorder Demonstrate the Influence of Psychological Forces on Physiologically Motivated Behaviors?