Exploring reward-related attention selectivity deficits in Parkinson's disease.

In healthy controls, we found that though the effect of reward level on attention did not reach statistical significance (difference estimates: low vs no distractor = 0.001, p = 0.530; high vs. none = 0.004, p = 0.100, low vs. high = − 0.002, p = 0.376), the overall direction of the effect was as expected: controls were slowest on the trials that included a high-reward distractor (881 ms ± 235), compared to the trials with a low-reward distractor (875 ms ± 233) and those without a distractor (871 ms ± 230).

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