Table 1.

Sequence of drug testing in the temporal discrimination task (TDT)

Week(s) of testing	Treatment
1–4	“Low” doses of (R)-ketamine (0, 7.5, 15 mg/kg)
	“Low” doses of (S)-ketamine (0, 3.5, 7.5 mg/kg)
5–6	Wash-out and training with vehicle
7–8	Psilocybin (0, 0.3, 1 mg/kg)
8–9	Wash-out and training with vehicle
9–10	Psilocin (0, 0.22, 0.72 mg/kg)
11–12	Wash-out and training with vehicle
13–14	Norpsilocin (0, 0.22, 0.72 mg/kg)
15	Wash-out and training with vehicle
16–18	“High” doses of (R)-ketamine (0, 30 mg/kg)
	“High” doses of (S)-ketamine (0, 15 mg/kg)