62-64 While a similar study in Parkinson’s disease patients showed a statistically significant slowing in response times for cards with high uncertainty, 62 the response time difference between different card numbers trended towards but did not reach statistical significance in our study, similar to prior studies using this task in epilepsy patients and in patients with depression/obsessive compulsive disorder. 63 , 64 This may reflect differences among Parkinson’s disease and epilepsy, depression and obsessive compulsive disorder patient populations, or may be due to other factors contributing to differences in task performance.
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