Table 2.

Associations between striatal activation during reward anticipation, striatal Mu Opioid Receptor (MOR) availability and measures of hedonic responses/symptoms. BPND – binding potential, PANSS – positive and negative symptoms scale, SANS – scale for the assessment of negative symptoms, TEPS – temporal experience of pleasure scale.

Measure	Striatal Reward > neutral anticipation parameter estimate				Striatal MOR BPND
	SCZ		CTR		SCZ		CTR
	r	p	r	p	r	p	r	p
PANSS	−0.196	0.43	n/a	n/a	−0.014	0.96	n/a	n/a
PANSS-positive	−0.172	0.50	n/a	n/a	0.081	0.75	n/a	n/a
PANSS-negative	−0.120	0.63	n/a	n/a	−0.065	0.80	n/a	n/a
PANSS-general	−0.216	0.39	n/a	n/a	0.008	0.97	n/a	n/a
SANS-25	0.106	0.32	n/a	n/a	−0.166	0.51	n/a	n/a
Revised social anhedonia	−0.365	0.14	0.299	0.21	0.334	0.16	0.379	0.11
Revised physical anhedonia	−0.231	0.36	0.281	0.24	0.197	0.43	0.281	0.24
TEPS anticipatory pleasure scale	0.383	0.12	−0.270	0.26	0.109	0.67	−0.451	0.05
TEPS consummatory pleasure scale	0.188	0.46	−0.244	0.31	0.246	0.33	−0.244	0.31
Reaction time (neutral)	−0.254	0.34	−0.088	0.74	−0.215	0.42	−0.039	0.88
Reaction time (anticipation)	−0.139	0.61	−0.286	0.27	−0.198	0.46	−0.284	0.27
Accuracy in reward anticipation	−0.08	0.77	0.309	0.23	−0.102	0.71	−0.088	0.74