Not feeling so motivated
What is motivation?
What causes a person to want to repeat behavior
Define Hypovolemia and hypertonicity
Hypovolemia is low blood volume
Hypertonicity is when there is an increase in dissolved solute in the cell
What is extrinsic motivation? Intrinsic motivation?
Motivation inspired from other people or events.
Motivation inspired from within an individual
ADHD is a dysfunction of three circuits, what are they?
1) Frontoparietal intracortical circuits
2) Dorsal frontostriatal circuits
3) Mesocorticolimbic circuits
How does the dopaminergic system reinforce behaviour?
The signal will originate in the ventral tegmental area, pass through the lateral hypothalamus, and synapse with forebrain structures
What are Tanycytes?
These are modified ependymal cells that are elongated and acts as a bridge between the cerebrospinal fluid and the central nervous system
In the lateral hypothalamus, a dopamine antagonist is applied. What do you expect to occur?
It would be expected that the person who has an antagonized dopamine antagonist will lose motivation to seek rewards. They will still feel hedonia from reward, but seeking behaviour will cease
Where do POMC and NPY neurons recieve projections from? Where are they located generally?
They recieve incoming information about energy levels of peripheral organs. These neurons are close to the medial eminence
How do dopamine activity change based on reward?
If the reward was better than expected, than dopamine levels will increase.
If the reward was worse than what was expected, than the dopamine levels will decrease
Events that occur as priory predicted, than dopamine activity will remain the same
Where is the arcuate nucleus located?
In the ventromedial hypothalmic region