Auditory display of biomedical signals through a sonic representation: ECG and EEG sonification

Visualization is a common way of data presentation in many fields where processing of visual information is further done by the human visual system. Signals from the heart (ECG) and from the brain (EEG) are normally presented as graphs and are also visually processed. Such signals can be transformed into sound (sonification) and then processed by the human auditory system. We made sonifications of ECG and EEG recordings to demonstrate the processing capabilities of the auditory system for these types of signals.