A system and method for controlling a non-tactile device including a receiving device configured to receive signals corresponding to a user's brain waves or movements, the brain waves or movements corresponding to a series of directional intentions, the intentions defining at least one line pattern, a processor configured to process the at least one line pattern, each of said at least one line patterns associated with an action of the device, and output a control signal to the non-tactile device related to the action.

Various embodiments comprise a system to sense magnetic fields along x, y, and z measurement axes of a single-beam magnetometer. The x-axis is parallel to the propagation direction of the magnetometer light beam while the y and z axes are orthogonal to the light beam and to each other. The system comprises processing circuitry that processes the signal from the magnetometer to generate a z-axis control signal for a z-axis compensation coil. The processing circuitry processes the signal to generate a y-axis control signal for a y-axis compensation coil. The processing circuitry modifies y-axis current to drive the y-axis compensation coil based on the y-axis control signal and a modulation pattern. The processing circuitry delivers the modified y-axis current to the y-axis compensation coil to mitigate background magnetic field. The processing circuitry estimates magnetic field components along the x-axis based on the z-axis control signal and the modulation pattern.

Various embodiments comprise a system to sense magnetic fields along x, y, and z measurement axes of a single-beam magnetometer. The x-axis is parallel to the propagation direction of the magnetometer light beam while the y and z axes are orthogonal to the light beam and to each other. The system comprises processing circuitry that processes the signal from the magnetometer to generate a z-axis control signal for a z-axis compensation coil. The processing circuitry processes the signal to generate a y-axis control signal for a y-axis compensation coil. The processing circuitry modifies y-axis current to drive the y-axis compensation coil based on the y-axis control signal and a modulation pattern. The processing circuitry delivers the modified y-axis current to the y-axis compensation coil to mitigate background magnetic field. The processing circuitry estimates magnetic field components along the x-axis based on the z-axis control signal and the modulation pattern.

An optically pumped magnetometer includes a cell, a pump light incidence unit causing pump light to be incident on a plurality of sensitivity regions inside the cell in a first direction, a probe light incidence unit causing probe light to be incident on the sensitivity regions in a direction intersecting the first direction, bias magnetic field coils applying a bias magnetic field to the inside of the cell and determining a resonance frequency of the electron spins, an electron spin tilting unit tilting a rotation axis direction of the electron spins in a direction perpendicular to the first direction, an optical sensor detecting the probe light; and a magnetic field measuring unit measuring magnetic field strengths related to the sensitivity regions, wherein the bias magnetic field coils respectively apply a plurality of the bias magnetic fields having strengths different from each other to the plurality of corresponding sensitivity regions.

An optically pumped magnetometer includes a cell, a pump light incidence unit causing pump light to be incident on a plurality of sensitivity regions inside the cell in a first direction, a probe light incidence unit causing probe light to be incident on the sensitivity regions in a direction intersecting the first direction, bias magnetic field coils applying a bias magnetic field to the inside of the cell and determining a resonance frequency of the electron spins, an electron spin tilting unit tilting a rotation axis direction of the electron spins in a direction perpendicular to the first direction, an optical sensor detecting the probe light; and a magnetic field measuring unit measuring magnetic field strengths related to the sensitivity regions, wherein the bias magnetic field coils respectively apply a plurality of the bias magnetic fields having strengths different from each other to the plurality of corresponding sensitivity regions.

Various embodiments disclosed herein comprise systems and methods to arrange magnetic field sensors. In some examples a magnetic field detection system comprises a sensor holder and magnetometers. The sensor holder mounts the magnetometers proximate to a magnetic field source that generates a magnetic field. The magnetometers measure the magnetic field in multiple directions. A first portion of the magnetometers measures a normal component of the magnetic field and a first tangential component of the magnetic field, and a second portion of the magnetometers measures the normal component of the magnetic field and a second tangential component of the magnetic field. The sensor holder distributes the first portion of the magnetometers and the second portion of the magnetometers, so the tangential components measured by neighboring ones of the magnetometers mounted to the sensor holder are orthogonal.

A brain measurement apparatus includes: a magnetoencephalograph module having a cell; a pump laser configured to emit pump light; a probe laser configured to emit probe light; an optical sensor group configured to detect a polarization plane angle of the probe light having passed through the sensitivity region; a bias magnetic field coil configured to apply a bias magnetic field; and bias magnetic field gradient correction coils configured to correct a gradient of the bias magnetic field; and an MRI module having a transmission coil for transmitting an RF pulse of a predetermined frequency and a receiver coil configured to detect a nuclear magnetic resonance signal. At least one of the coil that applies a static magnetic field and the coil that applies a gradient magnetic field is configured by the same coil as the bias magnetic field coil or the bias magnetic field gradient correction coils.

A brain measurement apparatus includes: a magnetoencephalograph module having a cell; a pump laser configured to emit pump light; a probe laser configured to emit probe light; an optical sensor group configured to detect a polarization plane angle of the probe light having passed through the sensitivity region; a bias magnetic field coil configured to apply a bias magnetic field; and bias magnetic field gradient correction coils configured to correct a gradient of the bias magnetic field; and an MRI module having a transmission coil for transmitting an RF pulse of a predetermined frequency and a receiver coil configured to detect a nuclear magnetic resonance signal. At least one of the coil that applies a static magnetic field and the coil that applies a gradient magnetic field is configured by the same coil as the bias magnetic field coil or the bias magnetic field gradient correction coils.

A brain measurement apparatus includes: a magnetoencephalograph module having a cell, a pump laser configured to emit pump light, a probe laser configured to emit probe light to a sensitivity region intersecting the pump light in the cell, an optical sensor group configured to detect a polarization plane angle of the probe light having passed through the sensitivity region, and a bias magnetic field coil configured to apply a bias magnetic field; and an MRI module having a transmission coil for transmitting an RF pulse of a predetermined frequency, and a receiver coil configured to detect a nuclear magnetic resonance signal generated by transmission of the RF pulse. The magnetoencephalograph module and the MRI module are surrounded by a magnetic shield including a soft magnetic material.

A brain measurement apparatus includes: a magnetoencephalograph module having a cell, a pump laser configured to emit pump light, a probe laser configured to emit probe light to a sensitivity region intersecting the pump light in the cell, an optical sensor group configured to detect a polarization plane angle of the probe light having passed through the sensitivity region, and a bias magnetic field coil configured to apply a bias magnetic field; and an MRI module having a transmission coil for transmitting an RF pulse of a predetermined frequency, and a receiver coil configured to detect a nuclear magnetic resonance signal generated by transmission of the RF pulse. The magnetoencephalograph module and the MRI module are surrounded by a magnetic shield including a soft magnetic material.