(IMAGE) Institute of Science and Technology Austria Caption Electron microscope image of neurons in the cerebellum. This slice through the cells in the cerebellum shows a dendritic branch of a Purkinje cell and its side arms (yellow) receiving several excitatory inputs (green) and inhibitory inputs (red). Credit © Walter Kaufmann / ISTA Usage Restrictions Free to use when reporting about paper. 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.