Non-rapid eye movement sleep instability in adults with epilepsy: a systematic review and meta-analysis of cyclic alternating pattern -V45I4 Non-rapid eye movement sleep instability in adults with epilepsy: a systematic review and meta-analysis of cyclic alternating pattern -V45I4 Download Lucid dreaming occurs in activated rapid eye movement sleep, not a mixture of sleep and wakefulness -V45I4 Optimal spindle detection parameters for predicting cognitive performance-V45I4