TABLE 1.
Contrast modeled in the monetary incentive delay task
| Contrasts | Phases of MID Modeled |
|---|---|
| Contrast 1 (A1) ‐ Ant | Win (W; $5 & $0.20) > Neutral (N) (W > N) |
| Contrast 2 (A2) ‐ Ant | Big Win (BW; $5) > Neutral (N) (BW > N) |
| Contrast 3 (A3) ‐ Ant | Big Win (BW; $5) > Small Win (SW; ($0.20) (BW > SW) |
| Contrast 4 (A4) ‐ Ant | Big Win (BW; $5) > Implicit Baseline (BW > IB) |
| Contrast 5 (A5) ‐ Ant | Big Loss (BL; $5) > Neutral (N) (BL > N) |
| Contrast 6 (O6) – Out | Big Win (BW; $5) Hit > Neutral (N) Hit (BWH > NH) |
| Contrast 7 (O7) – Out | Big Loss (BW; $5) Hit > Neutral (N) Hit (BWH > NH) |
| Contrast 8 (P8) ‐ PE | Expected Value – BW & SM Modulated (EV) |
| Contrast 9 (P9) ‐ PE | Positive Prediction Error (PPE) ‐ BW & SM Modulated |
| Contrast 10 (P10) ‐ PE | Negative Prediction Error (NPE) ‐ BL & SL Modulated |
Ant = anticipation; Out = outcome; individual contrasts modeled in FSL, see section 1.3 in Supplementary for list of events modeled in GLM. A = anticipation; O = Outcome; PE = prediction error