Robyn Klein and Michael Vasek (IMAGE) Washington University School of Medicine Caption Robyn Klein, M.D., Ph.D., and Michael Vasek, Ph.D., look at images of mouse synapses. Their research showed that the memory loss suffered by some survivors of West Nile encephalitis may be caused by the loss of synapses between neurons. Credit Robert J. Boston Usage Restrictions None 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.