1. What are the behavioral effects of psychomotor stimulants at low doses in humans? at high doses? [ANSWER]

2. What major class of neurotransmitters are involved in the action of psychomotor stimulants?[ANSWER]

3. What are some of the ways amphetamine increases activity at monoamine synapses?[ANSWER]

4. How does cocaine affect the monoamine synapses?[ANSWER]

5. What brain area is responsible for mediating the reinforcing effects and motor stimulant effects of psychomotor stimulants?[ANSWER]

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Question:	What are the behavioral effects of psychomotor stimulants at low doses in humans? at high doses?
Answer:	A.) The behavioral effects of stimulants at low doses include induced wakefulness, increased activity, decreased appetite and stimulation of the sympathetic nervous system. B.) At high doses, psychomotor stimulants produce sterotypic behaviors and possibly psychosis.

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Question:	What major class of neurotransmitters are involved in the action of psychomotor stimulants?
Answer:	Monoamines.

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Question:	What are some of the ways amphetamine increases activity at monoamine synapses?
Answer:	1.) By inhibiting monoamine oxidase, 2.) increasing the amount of the transmitter released, 3.) blocking reuptake of the transmitter.

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Question:	How does cocaine affect the monoamine synapses?
Answer:	Cocaine works by blocking uptake of the catecholamines.

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Question:	What brain area is responsible for mediating the reinforcing effects and motor stimulant effects of psychomotor stimulants?
Answer:	The nucleus accumbens.

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