Influence of sleep stage and wakefulness on spectral EEG activity and heart rate variations around periodic leg movements.
Suzie Lavoie, Fabienne de Bilbao, José Haba-Rubio, Vicente Ibanez, Emilia Sforza
Clinical Neurophysiology | Published : 2004
OBJECTIVE: Typical changes in spectral electroencephalographic (EEG) activity and heart rate (HR) have been described in periodic leg movements (PLM) associated with or without microarousals (MA). We aimed to determine the effects of sleep stage and wakefulness on these responses to ascertain whether a common pattern of EEG and HR activation takes place. METHODS: The time course of EEG spectral activity and HR variability associated with PLM was analysed in 13 patients during light NREM sleep, rapid-eye-movement (REM) sleep and wakefulness. The same analysis was also conducted for PLM without MA occurring in stage 2. RESULTS: A significant EEG and electrocardiogram (ECG) activation was found..View full abstract