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- W2061719753 abstract "Assess individual-subject long-term and within-day variability of a combined behavioral and EEG test of working memory.EEGs were recorded from 16 adults performing n-back working memory tasks, with 10 tested in morning and afternoon sessions over several years. Participants were also tested after ingesting non-prescription medications or recreational substances. Performance and EEG measures were analyzed to derive an Overall score and three constituent sub-scores characterizing changes in performance, cortical activation, and alertness from each individual's baseline. Long-term and within-day variability were determined for each score; medication effects were assessed by reference to each individual's normal day-to-day variability.Over the several year period, the mean Overall score and sub-scores were approximately zero with standard deviations less than one. Overall scores were lower and their variability higher in afternoon relative to morning sessions. At the group level, alcohol, diphenhydramine and marijuana produced significant effects, but there were large individual differences.Objective working memory measures incorporating performance and EEG are stable over time and sensitive at the level of individual subjects to interventions that affect neurocognitive function.With further research these measures may be suitable for use in individualized medical care by providing a sensitive assessment of incipient illness and response to treatment." @default.
- W2061719753 created "2016-06-24" @default.
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- W2061719753 date "2012-07-01" @default.
- W2061719753 modified "2023-10-18" @default.
- W2061719753 title "Long-term and within-day variability of working memory performance and EEG in individuals" @default.
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- W2061719753 doi "https://doi.org/10.1016/j.clinph.2011.11.004" @default.
- W2061719753 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3325329" @default.
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