Fig. 5

Effect of TEMPOL in the food reinforcement test. (A–C). Effect of TEMPOL on the mean number of earned food pellets (A) and mean number of active (B) and inactive (C) lever presses over a 1 h session of the food reinforcement test. Saline or TEMPOL (50 mg/kg, i.p.) was injected 10 min before the food reinforcement test on the test day. n = 6/group. All the values are presented as the mean ± SD.