Living organisms cannot move or think without the brain. To elucidate the mechanisms of brain function, we are conducting multiscale and multimodal research combining behavioral analysis, MRI, optical imaging, electrical measurement of neuronal activities, and computer simulations. The results obtained from these studies not only provide clues regarding the information-processing mechanism of the brain, but also help elucidate the pathogenic mechanisms of neurological disorders and ways to treat them. Furthermore, we are developing devices and methods to enable the measurement of signals that cannot be measured with existing devices. All those interested in the working of the brain are welcome to join us.