Question

Optogenetics enables researchers to stimulate which of the following parts of a neuron:

	A.	Dendrites
	B.	Axons
	C.	Cell bodies
	D.	A, B, and C
	E.	B and C

The direct pathway:

	A.	Disinhibits the motor thalamus
	B.	Activates the thalamocortical connections
	C.	Inhibits the thalamocortical connections
	D.	A and B
	E.	A and C

A rat is undergoing the maze learning task. Administering lidocaine (a neural inhibitor) to the rat's striatum on Day 1 of learning the task would result in an observable behavioral change on:

	A.	Trials that occur on day 1
	B.	Trials that occur on day 2
	C.	Conditioned cue preference
	D.	Water maze
	E.	None of the above

Answer 1

1.Optogenetics enables researchers to stimulate which of the following parts of a neuron:

Answer: D. A, B, and C

Depending on the requirement optogenetic mediated stimulation of axon, dendrite and cell bodies are done.

2. The direct pathway:

Answer: D : A & B

The activation of the direct pathway disinhibits the motor thalamus leading to an activation and increased activity of the thalamo cortical connections.

A rat is undergoing the maze learning task. Administering lidocaine (a neural inhibitor) to the rat's striatum on Day 1 of learning the task would result in an observable behavioral change on:

Answer : C - conditioned cue preference.

Reward oriented tests have revealed that after deactivation of the dorsal or ventral subiculum or rats striatum with lidocaine has shown observable behavioral change in conditioned cue preference.

Hope it is explained enough, if further classifications are required please leave a comment.