Table 2.

Mean amplitudes of different reward conditions in 120–180 ms time windows

Measure	Real reward		Hypothetical reward
	High	Low	High	Low
Frontal	1.74 ± 3.11	1.97 ± 2.89	1.40 ± 3.77	1.85 ± 2.60
Fronto-central	0.34 ± 3.12	1.02 ± 2.44	0.76 ± 3.22	1.21 ± 2.16
Central	− 0.20 ± 2.32	0.70 ± 1.87	0.73 ± 2.83	0.92 ± 2.01
Centro-parietal	− 1.03 ± 2.85	0.49 ± 2.36	0.22 ± 2.72	0.61 ± 2.32
Parietal	− 0.75 ± 2.79	0.08 ± 2.96	0.08 ± 2.96	− 0.56 ± 3.05