Lecture 10

What is the key structure in operant conditioning?
Striatum or basal ganglia
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What is the medial forebrain bundle and what areas does it connect?
It has dopamine fibres and reacts to reward, and connects VTA and nucleus accumbens
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What is significant about the nucleus accumbens during substance abuse?
Dopamine release in nucleus accumbens occurs when rewarded, so it can be addictive
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What is the mechanism of dopamine in operant conditioning?
Dopamine strengthens S-R associations
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How do drugs elicit a dopamine response?
Drugs are a powerful reinforcer
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How is drug abuse behaviour maintained?
Drug being a primary positive reinforcer, a negative reinforcer (takes stress away), counters withdrawal symptoms and conditioned positive reinforcement
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Card 2

Front

What is the medial forebrain bundle and what areas does it connect?

Back

It has dopamine fibres and reacts to reward, and connects VTA and nucleus accumbens

Card 3

Front

What is significant about the nucleus accumbens during substance abuse?

Back

Preview of the front of card 3

Card 4

Front

What is the mechanism of dopamine in operant conditioning?

Back

Preview of the front of card 4

Card 5

Front

How do drugs elicit a dopamine response?

Back

Preview of the front of card 5
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