Differences between VMI and AO. (IMAGE) Tokyo Metropolitan University Caption (top) Comparing before and immediately after training (left) and one hour after training (right), motor performance has clearly improved. In both cases, the VMI group shows more improvement than the AO group. (bottom) Near-infrared spectroscopy can give the levels of oxygenated and deoxygenated hemoglobin in a specific part of the brain, highlighting activity at different times during the task. Different colors correspond to different compounds at different times before or after training. Credit Tokyo Metropolitan University Usage Restrictions Credit must be given to the creator. License CC BY 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.