Neural Mechanisms of Controlling Eating behaviour

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1. Role of Ventromedial Hypothalamus

  • Activated by low levels of blood glucose causing feelings of satiety so the individual starts eating
  • Activated high levels of blood sugar causing feelings of satiety (fullness) so the individual starts eating
  • Activated high levels of blood sugar causing feelings of satiety (fullness) so the individual stops eating
  • Activated by low levels of blood glucose causing feelings of hunger so the individual starts eating
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2. What did Wickens find?

  • When Neuropeptide Y is injected into the hypothalmus of rats it causes overeating
  • When additional neuropeptide Y was injected into rat's hypothalamus it led to obesity
  • Neuropeptide Y is produced by the hypothalamus leading to overeating then when abdominal fat is gained, the fat produces neuropeptide Y leading to more overeating

3. What did Yang et al. find?

  • Neuropeptide Y is produced by the hypothalamus leading to overeating then when abdominal fat is gained, the fat produces neuropeptide Y leading to more overeating
  • When additional neuropeptide Y was injected into rat's hypothalamus it led to obesity
  • When Neuropeptide Y is injected into the hypothalmus of rats it causes overeating
  • when rats were injected with leptin they lost weight

4. Role of Lateral Hypothalamus in controlling eating behaviour

  • Activated high levels of blood sugar causing feelings of satiety (fullness) so the individual stops eating
  • Activated high levels of blood sugar causing feelings of satiety (fullness) so the individual starts eating
  • Activated by low levels of blood glucose causing feelings of hunger so the individual starts eating
  • Activated by low levels of blood glucose causing feelings of satiety so the individual starts eating

5. Issue with non-human research research being generalised to human research?

  • Obese women had normal levels or high levels of leptin suggesting leptin has different roles in different animals' bodies
  • It's too expensive
  • It's too simplistic

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