Spectral Analysis Products	ANSiscope
3 lead ECG pickup	3 lead ECG pickup + 1 lead for better grounding + Chest lead for additional ECG functionality
R wave detection	R wave detection
R-R interval measurement	R-R interval measurement
Heart Rate calculation	Heart rate calculation
Separation of sympathetic and parasympathetic components of the Autonomic Nervous System By power spectrum analysis LF(low frequency) wave=sympathetic response HF(High Frequency) wave=parasympathetic response	Separation of sympathetic and parasympathetic components of the Autonomic Nervous System By scale covariance approach Real part of complex wave function=sympathetic response Imaginary part of complex wave function= parasympathetic response
Calculation of Indices (through integration) LF/(LF+HF) = sympathetic modulation of Heart Rate HF/(LF+HF)=parasympathetic modulation of Heart Rate	Calculation of Indices (through interquartiles) Index from real part of wave= sympathetic ANSindex Index from imaginary part of wave=parasympathetic ANSindex
Calculation of Sympathovagal Balance Balance = LF/HF	Calculation of Sympathovagal Balance Balance= trajectory of a free body under the attraction/repulsion of two opposing poles, being the sympathetic and the parasympathetic systems
Calculation of Autonomic Dysfunction Corresponding to reduced sympathetic and parasympathetic modulation	Calculation of Autonomic Dysfunction Corresponding to reduced coupling between the sympathetic and parasympathetic systems

Note: The readings of the two devices need to be transformed mathematically in order to compare their readings. The bold numbers are the comparable readings of the two devices. The LF/HF numbers are the original readings of the spectral analysis devices.