Andreas Reichenbach, Dr. med. habil., started his career as a physiologist. Since 1994 he has been Professor for Neurophysiology and Head of the Department of Pathophysiology of Neuroglia at the Paul Flechsig Institute of Brain Research, Universitat Leipzig, Germany. His main fields of research are the development, structure, function, and pathophysiology of the vertebrate retina, and the contribution of neuroglial cells to the functioning and dysfunctions of the retina and brain. In particular, he and his colleagues contributed a great deal to the present knowledge about Muller (radial glial)...