In this project, we will develop a high-speed, wide-field, and high-resolution imaging method to record neuronal activity across the dorsal motor cortices of common marmosets during performance of a forelimb movement task. We will then construct a dataset consisting of the neuronal activity, behavior, and brain/bone structure data from the same animals. This project will contribute to the development of a “digital brain” that reproduces the neural circuits involved in motor control function of biological brains.