Published in Telemedicine Week, April 5th, 2005
According to recent research from Sweden, "The possibility of using heart rate variability (HRV) as an indicator of sleepiness was investigated by analyzing heart rate (FIR) activity and electroencephalography (EEG) recordings from 10 individuals who performed a monotonous attention task for 120 minutes in both sleep-deprived and rested states."
J. Vandenberg and colleagues of the National Institute of Working Life explained, "In both conditions, measurements were collected during 60 minutes of sleep immediately following a 120...
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