Striatal occupancy and functional response from 5-HT4 drugs
Drug	Dose (mg/kg)	pretreatment	% Occupancy (PET)	% change in CBV (fMRI)
RS67333	0.01	N.A.	24	N.D.
RS67333	0.05	N.A.	48	N.D.
RS67333	0.20	N.A.	90	N.D.
SB207145	0.25	N.A.	90+	N.D.
SB207145	0.25	fenfluramine (5 mg/kg)	N.A.	N.D.
N.A.: Not applicable; N.D.: Not detectible