Biological explanations of eating behaviour. Keywords you will come across in this topic. Satiation Aphagia Leptin Hyperphagia Neuropeptide Y Lateral hypothalamus Ventromedial hypothalamus Paraventricular nucleus Amygdala Inferior frontal cortex.
You should understand………..
The hypothalamus is responsible for all of these bodily functions.
A bit like the fat controller!!
Water + balloons =?
Stomach or neural mechanism?
What do balloons have to do with it?
What evidence is this based upon?
Who is Washburn & cannon?
Let’s pause for thought!!!
Q: So if hunger is not a reflex what is it??
These were hungry rats!
He cut out different areas of the brain to see the effect on their ability to negotiate a maze successfully and reach the food placed at the exit as a reward.Karl Lashleys research
Neuropeptides are small proteins that are encoded by genes- they serve as chemical messengers between neurons and the brain.There’s more!!!!!!
When you do not eat sufficient amounts of food fat storage is used up to fuel the body and the fat cells cease to secrete and these levels fall in the blood.
The hypothalamus detects this drop and & interprets the drop in leptin as lack of calories and generate the feeling of hunger.So what is a peptide…an example!
detects this drop=feelings of hunger.
Be mindful…these cases are rare.
How does each piece of research become an AO2 point.
What research does it support or refute.
Slow to increase during deprivation and slow to fall upon feeding.
A single injection of AGRP will cause a rat to overeat for several days