Working Memory in Obstructive Sleep Apnea - Semantic Scholar
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SCIENTIFIC INVESTIGATIONS
Working Memory in Obstructive Sleep Apnea: Construct Validity and Treatment Effects Joshua C. Felver-Gant, B.A.1; Amanda S. Bruce, Ph.D.1; Molly Zimmerman, Ph.D.1; Lawrence H. Sweet, Ph.D.1; Richard P. Millman, M.D.2; Mark S. Aloia, Ph.D.3 Department of Psychiatry and Human Behavior, Brown Medical School, Providence, RI; 2Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Brown Medical School, Providence, RI; 3Department of Medicine, National Jewish Medical and Research Center, Denver, CO 1
Study Objective: To better understand the effects of obstructive sleep apnea (OSA) on working memory performance. We first examined the construct validity of a working memory task (the 2-Back task) and its relationship to other tests of cognitive functioning, and then determined the effects of positive airway pressure (PAP) treatment on measures of both working memory and its related component processes. Methods: Fifty-six participants with OSA were administered cognitive tests of working memory and related subordinate cognitive processes prior to initiation of PAP treatment and at a 3-month follow-up visit. Objective monitors were employed to measure PAP treatment adherence. Statistical analyses were conducted to examine treatment adherence and cognitive performance over time. Results: Performance on the 2-Back task was statistically correlated with both a second working memory task (PASAT) and all subordinate cognitive measures. Participants were separated into high and low PAP adherence groups using a median split of 4 hours of PAP use per
night. Repeated measures ANOVAs demonstrated that high adherers performed better across time on both tests of working memory (2-Back: F46 = 4.73, p
