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emo.motive - MOTIVATIONAL FORCES Results from forces that...

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MOTIVATIONAL FORCES: Results from forces that push the organism into action in order to reach a goal All of the processes that initiate, direct and sustain behavior Activation: the initiation of motivated behavior Persistence: the faithful and continued effort put forth in order to achieve a goal or finish a project Intensity: the focused energy and attention applied in order to achieve a goal or complete a project Motives Needs or desires that energize and direct behavior toward a goal Biological motives o Unlearned motives Social motives o Learned motives o Includes cultural expectations o Guidelines explaining how behaviors should be done Emotions o Contain both learned and unlearned components HUNGER: Depressed- production of acid in stomach drops, salivation slows down Both needed for digestion Possible LOSS OF appetite Angry- stomachs mucous membranes become full of blood, more acid, violent contractions Nausea Too much or too little acid affects appetite Stomach contracts when you are hungry BUT it is not the sole cause of hunger What part of the brain controls your hunger??? Primary drives Unlearned motives that serve to satisfy biological needs Internal and external hunger cues Two areas of the hypothalamus affect hunger Lateral hypothalamus (LH): “the feeding center” Stimulate the LH and animals will eat even when not hungry Destroy the LH and animals will initially refuse to eat Ventromedial hypothalamus (VMH): “the fullness center”
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Inhibits eating If removed, animals will eat themselves to obesity The hormone cholesystokinin also acts as a fullness signal Blood sugar levels, and hormones that affect them, also trigger hunger Low glucose levels in blood stimulate hunger Monitored by the liver Insulin elevations cause an increase in: Hunger sensations Food intake Desire for sweets Chronic stimulation of insulin production stimulates hunger and leads to obesity External cues stimulate hunger Smell of food cooking Sight of food Hands on the clock signaling mealtime Seeing others eat What happens when you miss a Meal? Weak and dizzy Blood sugar levels- glucose in blood indicates level of hunger Hungry= low B.S o Quick BS fixes- candy, soda, meat, pasta Hypothalamus has glucose monitors- when low g hungry →1960- Hypothalamus- electrically stimulated →Caused animal to eat even if they were full →Damage to lower portion caused animal to stop eating Hunger will disappear in about 1 hour if you skip a meal Body dumps stored glucose to give it “quick fix” to hold you over… Notice how you feel good even before you are done eating… Why?
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