Coherence analysis between heart and brain of healthy and unhealthy subjects

This paper presents the coupling of frequency spectra or degree of association between the EEG and ECG signals at a particular frequency. Coherence is often interpreted as a measure of a functional association and ‘coupling’ between two signals. An electrocardiogram (ECG) is an electrical recording of the heart and is used in the investigation of heart disease. An electrocardiogram (ECG) is a graphic tracing of the electric current generated by the heart muscle during heart beat. It has been used extensively in medicine since it has been proven to be invaluable in various diagnostics applications and clinical applications. An EEG signal reflects the electrical activity of human brain. EEG signals arises from the fact that these waveforms provide the non-invasive diagnostic tool in a wealth of disorders that include epilepsy and comma assessment in intensive e care unit. In this paper, we analyzed the association of heart with brain signals (ECG and EEG) of fundamental animals like Dog and Cow by obtaining magnitude squared coherence and phase coherence parameters at a certain range of frequency. We also analyzed the coherence between heart and brain signals of Healthy subject, Comatic patient and Brain dead person.