Analysis of EEG Data based on the Blind Signal Separation as the Pre-Test of the Determination of Brain Death

A diagnosis of brain death is made according to precise criteria and in a well-defined process. Since the determination process of brain death usually takes long time and with a high risk, such as removing a breath machine in an apnea test, a practical, safety and rapid method is expected to be developed as the pre-test of the determination of brain death. In this paper, we propose a practical EEG examination method associated with a scale-free approach of blind signal separation for the pre-testing of the brain death determination. Through the analysis of the patient's EEG data by our proposed approach, a deep-coma patient or a brain death patient can be distinguished.