Figure 4. Operant Learning.
Mean ± SEM shaping and pretraining sessions to criterion after treatment with either 2 d of 250 mg/kg PCPA (250 PCPA) or 2 d of 500 mg/kg (500 PCPA) or 2d of saline (SAL). 500 PCPA showed impaired nosepoking responses to stimuli on the touchscreen when given a maximum of 30 sessions. *Different from SAL and 250 PCPA, p≤0.05.
