Study the effect of music on HRV impulse using multifractal DFA analysis

The 2D Poincare´ plot of HRV signal reflects the effect of different external stimuli on ANS. The classification is generally done by fitting an `ellipse´ on the dense region of the constructed Poincare´ plot of HRV signal. However 2D Poincare´ plot sometimes fails to describe the proper behavior of the system. One such example is 2D Poincare´ plot of HRV signal in pre-music and on-music condition. In fact 2D Poincare´ plots in pre and on-music condition look almost similar for few subjects. So a proper classification tool is sought for. In this article, multi-fractal DFA analysis has been applied to properly distinguish the pre-music and on-music state of some normal healthy subjects. The whole experiment is carried out at School of Bio-Science and Engineering, Jadavpur University, Kolkata, India.