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Abstract
We sought to determine whether or not first-degree relatives of patients with familial Parkinson disease (FDRs) present impaired movement-related cortical activity. We studied 10 familial Parkinson disease subjects, 10 FDRs, and 10 controls and analyzed event-related mu desynchronization (ERD) and beta synchronization. Forty percent FDRs presented reduced premovement mu ERD latency, suggesting that premovement cortical activation is impaired in FDRs.
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