How the brain processes the number zero: (IMAGE) Universitatsklinikum Bonn Caption (from left) Prof. Florian Mormann and Esther Kutter, together with Prof. Andreas Nieder from the University of Tübingen, clarify the neuronal basis of the mathematical concept of “zero”. Credit University Hospital Bonn (UKB) / Alessandro Winkler Usage Restrictions The impression in connection with the service is free, while the image specified author is mentioned. License Original 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.