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Neuro Unit 5.4: Virtual Cocaine LabDo NowReview last nights homework with a partner.Introduction to Virtual Cocaine Lab

http://www.mind.ilstu.edu/teachers/labs/cocaine/index.htmlLets Look at the Data

This graph represents the time AFTER receiving cocaine. What phase of behavior is that?The Consummatory PhaseWhat does this graph show?Dopamine levels rise very rapidly and substantially after a bar press and cocaine reward was administered.

Dopamine levels returned to normal after a rapid then gradual decrease over approximately 10 seconds.

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This graph represents the time BEFORE receiving cocaine. What phase of behavior is that?What does this graph show?The Appetitive PhaseAt approximately 5 seconds before a bar press, there is a small increase in dopamine levels.

Dopamine levels continue to gradually increase until approximately 2 seconds before a bar press, then there was a rapid and large increase that peaked for approximately 3 seconds, and then returned to normal approximately 10 seconds after a bar press.

7Does the data support the hypothesis?YES!!! Because dopamine levels increase before the rat receives its cocaine reward, the hypothesis that dopamine is involved in cocaine seeking behavior is supported. 8