Fig. 3.

One day of sodium CS-US training while deplete is insufficient to condition a dopamine response to the sodium CS. (A) Average dopamine concentration (±SEM) for Trained Replete (n = 4, black) and Trained Deplete (n = 4, red) rats. (B) NaCl US, but not CS, evoked phasic dopamine release regardless of training history. Dopamine concentration during the infusion was significantly greater than both the baseline and cue periods in both groups (**P < 0.01). Dopamine concentration during the CS was not greater than baseline for either group. (C) Neither group approached the cue lever during the CS. (D) Postrecording session NaCl consumption did not differ between groups.