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Drug-free [DA]max responses after 7-day saline or cocaine followed by 24-h withdrawal. A: experimental timeline for 1-day drug-exposure and FSCV recordings. B and C: pre-exposure to 7-day cocaine did not alter peak dopamine responses in the NAc core or shell compared with 7-day saline-treated subjects. [DA]max in the NAc core (n = 9) (B) and NAc shell (n = 17) (C) in response to electrical stimulation of the VTA. [DA]max data presented as ±SE.
