neural explanations for obesity
- Created by: rachael.em
- Created on: 07-04-21 14:46
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- Neural explanations of obesity
- obesity results from abnormally functioning brain mechanisms
- hypothalamus plays the central role in regulation of eating
- VMH acts as the satiety centre
- the action of leptin upon the brain neurones
- hypothalamus plays the central role in regulation of eating
- testing
- studying animal studies
- faulty functioning brain structures and neurological mechanisms of obese individuals
- Reeves and Plum (1969)
- post-mortem of an obese female finding the VMH to be destroyed
- Yang (2012)
- increasing the signalling POMC neurone was positively correlated with age-dependent obesity in mice
- neural factors may be able to explain why obesity increases with age
- evaluation
- research indicates that the main bio factors are genetics and evolutionary explanations
- research tends to be correlational - doesn't establish cause and effect
- animal studies
- cannot be generalised to humans
- Stice et al (2008) found obese people have poorly functioning dorsal striatum - lessened dopamine signalling in brain, causing overeating. Demonstrates role of neurotransmitter dopamine in determining obesity.
- obesity results from abnormally functioning brain mechanisms
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