Table 2:

Overview of the parametric modulator calculations used for estimating brain activation

	Number of symbols shown	RP	RPE in case of win (1): RPE = 1 − RP	RPE in case of no win (0): RPE = 0 − RP
Win domain	1	1	1 − 1 = 0	0 − 1 = −1
	2	1/2	1 − 1/2 = 1/2	0 − 1/2 = −1/2
	3	1/3	1 − 1/3 = 2/3	0 − 1/3 = −1/3
	4	1/4	1 − 1/4 = 3/4	0 − 1/4 = −1/4
	Number of symbols shown	LP	LPE in case of loss: LPE = −1 − LP	LPE in case of no loss: LPE = 0 − LP
Loss domain	1	0	−1 − 0 = −1	0 − 0 = 0
	2	−1/2	−1 − (−1/2) = −1/2	0 − (−1/2) = 1/2
	3	−2/3	−1 − (-2/3) = −1/3	0 − (−2/3) = 2/3
	4	−3/4	−1 − (−3/4) = −1/4	0 − (−3/4) = 3/4