Nervous System control of behavior: part 2

Question 1

What is a proximate explanation for habituation and sensitization in Aplysia?

Answer 1

What is the development of that behavior?
- Aplysia learn the behavior of habituation and sensitization!

2. What are the physiological mechanisms responsible for that behavior?
   * Poking responsible for habituation
   * Poking and shocking responsible for sensitization

Question 2

How do second messenger pathways work in cAMP?

Answer 2

cAMP (cyclic AMP): Alpha section and Adneylate cyclase create the cyclic AMP (2nd messenger)

This leads to protein kinase; Protein kinase phosphorylates (adds phosphate group) potassium channels

This changes potassium channel states (in this case on -> off, open -> close, but can go either way); Phosphorylated potassium channels stay closed longer

Question 3

How do second messenger pathways work in DAG?

Answer 3

diacylglycerol (DAG): Alphas section and phospholipase C create the DAG(diacylglycerol)

This leads to protein kinases; Protein kinase phosphorylates calcium ion channels and synapsin activates

This changes their state from off -> on, close -> open

Syapsin facilitates movement of vesicles and capsules

Question 4

In response to a predator, what is the sequence of activation by A1 and A2 receptors? What type of information does this pattern relay to potential prey?

Answer 4

Address later!

Question 5

What is a central pattern generator? Why does its activity lead to adaptive changes in behavior?

Answer 5

Central pattern generators: responsible for rhythmic movements

Address more later!