What is Power Spectral Density (PSD)

The periodic oscillations of the heart rate signal decomposed at different frequencies and amplitudes; and provides information on the amount of their relative intensity (termed variance or power) in the heart's sinus rhythm. The power spectrum consists of frequency bands ranging from 0 to 0.5 Hz and can be classified into four bands: the ultra-low frequency band (ULF), the very low frequency band (VLF), the low frequency band (LF) and the high frequency band (HF).

Demographic Characterization of Heart Rate Variability (HRV)

Ankur Ganguly (Siliguri Institute of Technology, India), D. N. Tibarewala (School of BioScience and Engineering, Jadavpur University, India), S. Dasgupta (Calcutta Institute of Engineering and Management, India), and Subhojit Sarker (Siliguri Institute of Technology, India)