Brain Mechanisms of Hunger
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What happens when you lesion the lateral hypothalamus?
- Weight Loss
- Low insulin level (because of damage to cell bodies)
- Underresponsiveness (because damage to passing axons)
What happens when you lesion the ventromedial hypothalamus?
- Increased meal frequency
- Weight gain
- High insulin levels
What happens when you lesion the paraventricular nucleus?
Increased meal size, especially increased carbohydrate intake during the first meal of the active period of the day
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