A brain measurement device (M1) is provided with a magnetoencephalometer having a light excitation magnetic sensor (1A), a magnetic sensor (2) for measuring geomagnetism at the position of the light excitation magnetic sensor (1A), a magnetic sensor (3) for measuring a changing magnetic field at the position of the light excitation magnetic sensor (1A), correction coils (7, 8) for correcting the geomagnetism, and an active shield coil (9) for correcting the changing magnetic field; the MRI device comprises correction magnetic coils (7, 8) for applying a static magnetic field and a gradient magnetic field, a transmission coil (21) for transmitting a transmission pulse, and a reception coil (22) for detecting a nuclear magnetic resonance signal; and a control device (5) that controls the current supplied to the correction coils (7, 8) and the active shield coil (9) on the basis of the measurement values of the magnetic sensors (2, 3) at the time of measurement of the brain magnetic field, controls the current supplied to the correction coils (7, 8), and controls the static magnetic field and the gradient magnetic field at the time of measurement of the MR image, and generates the MR image from the output of the reception coil (22).
Brain measurement device and brain measurement method