Receptor kinetic parameters measured before (Congruent condition) and after (Incongruent condition) task initiation.

The values were estimated using extended simplified reference tissue model (E-SRTM).MNI = Montreal Neurological Institute stereotactic coordinates; BP0 = ligand binding potential in the Congruent condition; BP1 = ligand binding potential in the Incongruent condition; ΔBP = change in BP after task initiation; t-value ΔBP = t values of the difference in BP before and after task initiation; k2a = dissociation coefficient of the specific binding (k2/k2-1); Cong = Congruent condition; Incong = Incongruent condition.