A01 neural mechanisms on eating behaviour

Question 1

What are the 4 subtitles for the role of neural mechanism

Answer 1

Homeostasis
The later la hypothalamus
The ventromedial hypothalamus
Neural control of cognitive factors

Question 2

What is homeostasis

Answer 2

It is the body’s tendency to maintain a constant internal state by returning the situation to its optimal state

Question 3

Talk about homeostasis in terms of eating behaviour

Answer 3

Glucose levels plays the most important role in producing feelings of hunger

As hunger increases glucose levels increase

Therefore a decline in glucose levels in the bloodstream activates the lateral hypothalamus increasing feelings of hunger so person searchers for food

Increases glucose levels in the bloodstream activates the ventromedial hypothalamus increase feelings if satiation which inhibits person from searching for food.

Question 4

Talk about the lateral hypothalamus

Answer 4

Damage to the lateral hypothalamus leafs to aphasia, this results in more craving for food. It’s the on switch

Neurotransmitter neuropeptide y turns on eating if it is injected in to the lateral hypothalamus even if satiated. This also causes obesity if kept injected.

Question 5

Talk about the ventromedial hypothalamus

Answer 5

Damage to the vmh causes animals to overeat or hyperphagia
So the stimulation of the vmh inhibits feeding

So It’s the off switch of eating.

Question 6

Who found out that when npy is injected into hypothalamus th rats begin feeding even when satiated.

Answer 6

Wickens

Question 7

Talk about the para ventricular nucleus or the pvn

Answer 7

Damage ti the pvn alone causes hyperphagia

And is responsible for many of out cravings

Question 8

Who found out the stuff about ovn

Answer 8

Gold

Question 9

What are the 2 sections for the neural control of cognitive factors

Answer 9

Amygdala

Inferior frontal cortex

Question 10

What is the role of amygdala in neural mechanism in eating behaviour

Answer 10

Helps us select food based on previous xp

Question 11

Who supported claims of role of amygdala

Answer 11

Rolls and rolls

Question 12

What did rolls and rolls do and find

Answer 12

That when the amygdala in rats was removed they began to eat familiar and unfamiliar things indiscriminately

Question 13

What is the role of the inferior frontal cortex

Answer 13

Recieved message from the olfactory bulb which is the part of the Brian responsible for smell.

Question 14

Who tested role of inferior frontal cortex

Answer 14

Kolb and whishaw

Question 15

What did lol and whishaw do and find

Answer 15

That damage to the inferior frontal cortex decreases eating because if the decreased sensory responses to food odour