Mouse at Decision Point in T-Maze (image) NIH/National Institute of Mental Health Share Print E-Mail Caption To receive a reward, a mouse in the T-maze had to remember whether it had turned left or right on the previous trial, and turn in the opposite direction. Mice genetically engineered to lack a specific segment of genetic material on Chromosome 22, a known cause of schizophrenia -- like patients with the disorder -- faltered at such working memory tasks, because of poor functional connections between the brain's executive and memory hubs. Credit Torfi Sigurdsson, PhD, Department of Psychiatry, Columbia University Usage Restrictions None Share Print E-Mail 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.