Table 1.

Average presession baseline firing rates of recorded neurons across recording sessions

Session	n	Firing rate (Hz)
Acute AMPH
0 mg/kg AMPH	123	2.72 ± 0.25
0.25 mg/kg AMPH	114	2.70 ± 0.26
0.5 mg/kg AMPH	127	2.62 ± 0.30
1.0 mg/kg AMPH	117	2.85 ± 0.32
Repeated AMPH
0 mg/kg AMPH before	68	2.90 ± 0.41
0.25 mg/kg AMPH before	61	2.85 ± 0.42
0 mg/kg AMPH after	70	3.25 ± 0.40
0.25 mg/kg AMPH after	57	3.03 ± 0.43

Presession baseline firing rates across different sessions were not significantly different during either the acute AMPH phase (1-way ANOVA, p > 0.05) or the repeated AMPH test (2-way ANOVA, p > 0.05). In the repeated AMPH test, “before” indicates sessions before the drug-free periods, and “after” indicates sessions after the drug-free period.