PROFESSIONAL      TECHNICAL                     INFORMATION Computer-powered Wireless Ultra-intelligent Real-time Vital signs Monitor Professional & Technical Information. Self test. MyPulse provides all data, charts and modern heart rate variability analysis recommended in this reference. Examples: Maximum, minimum, difference, mean, standard deviation, reciprocal, change, histogram, autocorrelation function, spectral analysis, alpha log ratio for 5 minute, 24 hour, or longer beat to beat rates, or interbeat times between QRS complexes. Read more >>> Marek, M. "Heart Rate Variability: standards of measurement, physiological interpretation, and clinical use. Task Force of the European Society of Cardiology & North American Society of Pacing Electrophysiology. http://circ.ahajournals.org/cgi/content/full/93/5/1043   View sample: history chart + spectral analysis