Impaired flexible reward learning in ADHD patients is associated with blunted reinforcement sensitivity and neural signals in ventral striatum and parietal cortex.

Across both groups, double update prediction errors were significant in the ventromedial prefrontal cortex cortex (xyz: 0/53/8, t = 3.62, p FWE = 0.043, k: 32 voxel) and only marginally significant in left (xyz: −13/10/−15, t = 2.31, p FWE = 0.060, k: 31 voxel) and right ventral striatum (xyz: 7/6/−8, t = 2.37, p FWE = 0.066, k: 46 voxel).

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