Abstract
Seventeen patients with sleep apnea syndrome [SAS, Respiratory Disturbance Index (RDI) = 12-85] were compared with 16 normal controls (RDI < 7) on neuropsychological tests of executive functions, a domain in which SAS patients have been suggested to have deficits. SAS patients demonstrated greater deficits in the retrieval of information from semantic memory (Controlled Oral Word Association task) and in shifting responses in the face of error (Wisconsin Card Sort Test), but differences in working memory were not observed. Eliciting deficits in cognitive executive functions in SAS may require more sensitive measures than are typically used in neuropsychiatric research.
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