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Voluntary wheel running after cocaine self-administration and extinction. Rats destined for cocaine-primed (“Cocaine”) and stress-induced (“Stress”) reinstatement were given continuous access to running wheels in their home cages for 3 weeks following cocaine self-administration and extinction. Mean±SEM distance run per day in kilometers is shown. Line of best fit is also shown (dotted line for Cocaine rats, dashed line for Stresss rats).
