(IMAGE) Kumamoto University Caption It is difficult to determine the difference between the normal heart rate and the heart rate before seizure onset when using an ECG to analyze heart rate variability. Credit Dr. Toshitaka Yamakawa (http://dx.doi.org/10.1109/TBME.2015.2512276) Usage Restrictions Attribution required as described under the <a href=”http://www.ieee.org/publications_standards/publications/rights/oapa_faq.pdf“>IEEE Open Access Publishing Agreement (OAPA)</a>. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.