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- W2013902700 abstract "The sensitivity of several neurophysiological and cognitive tests to different levels of hypoxia was investigated. Cerebral hypoxia in healthy volunteers may be a disease model for dementia or other forms of brain dysfunction. Twelve healthy subjects were included in a randomized, single-blind, placebo-controlled, three-period cross-over trial. They received three air/N2 gas mixtures via mask breathing [aimed at peripheral oxygen saturation (SPO2) values of > 97% (placebo), 90% and 80%, with normal end-tidal CO2]. Central nervous system effects were tested regularly for 130 min by saccadic and smooth pursuit eye movements, electro-encephalogram, visual analogue scales and cognitive tests. Treatments were well tolerated. Compared to SPO2 90%, SPO2 80% reduced saccadic peak velocity by 16.4 degrees/s [confidence interval (CI) -26.3, -6.4], increased occipital delta power by 14.3% (CI 3.6, 25.1), and significantly increased most cognitive reaction times. SPO2 80% also decreased correct responses for the binary choice task and serial word recognition [-1.3 (-2.2, -0.3) and -3.5 (-6.2, -0.8), respectively] compared to SPO2 90%. Cognitive performance was decreased by SPO2 80% and increased by SPO2 90% compared to placebo. Sensitive effect measurements can be identified for these interventions. The applicability as a model for cognitive impairment should be investigated further." @default.
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- W2013902700 date "2002-07-01" @default.
- W2013902700 modified "2023-10-04" @default.
- W2013902700 title "Evaluation of tests of central nervous system performance after hypoxemia for a model for cognitive impairment" @default.
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- W2013902700 doi "https://doi.org/10.1177/026988110201600408" @default.
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