Devices and methods for electrical potential sensing and influencing are provided. The inventive devices include electroencephalography (EEG), electrocardiogram (EKG), photoplethysmography (PPG), electromyography (EMG), and temperature devices for measuring bio-activity signals from a body. The described devices are designed to include motion dampending, a hybrid non-contact and contact sensing surface and to optimise sensitivity in difficult sensing conditions, such as during movement, through obstructions like hair and clothing, while having a convenient and small form factor. The inventive devices provide for improved sensitivity, adaptability, and noise reduction when compared to other designs. Methods for influencing said bio signals with a device with a hybrid non-contact and contact sensing surface are also described.

Devices and methods for electrical potential sensing and influencing are provided. The inventive devices include electroencephalography (EEG), electrocardiogram (EKG), photoplethysmography (PPG), electromyography (EMG), and temperature devices for measuring bio-activity signals from a body. The described devices are designed to include motion dampending, a hybrid non-contact and contact sensing surface and to optimise sensitivity in difficult sensing conditions, such as during movement, through obstructions like hair and clothing, while having a convenient and small form factor. The inventive devices provide for improved sensitivity, adaptability, and noise reduction when compared to other designs. Methods for influencing said bio signals with a device with a hybrid non-contact and contact sensing surface are also described.

According to one embodiment, a magnetic sensor includes a first sensor part, and a conductive member. The first sensor part includes a first magnetic element, a first side magnetic part, and a first counter side magnetic part. The conductive member includes a first corresponding portion along the first magnetic element. The first magnetic element includes a first magnetic layer, a first counter magnetic layer, a direction from the first magnetic layer toward the first counter magnetic layer being along a first direction, and a first intermediate magnetic layer located between the first magnetic layer and the first counter magnetic layer. The first side magnetic part includes a first side magnetic layer. The first counter side magnetic part includes a first counter side magnetic layer. The first intermediate magnetic layer is between the first side magnetic layer and the first counter side magnetic layer in a second direction.

According to one embodiment, a magnetic sensor includes a first sensor part, and a conductive member. The first sensor part includes a first magnetic element, a first side magnetic part, and a first counter side magnetic part. The conductive member includes a first corresponding portion along the first magnetic element. The first magnetic element includes a first magnetic layer, a first counter magnetic layer, a direction from the first magnetic layer toward the first counter magnetic layer being along a first direction, and a first intermediate magnetic layer located between the first magnetic layer and the first counter magnetic layer. The first side magnetic part includes a first side magnetic layer. The first counter side magnetic part includes a first counter side magnetic layer. The first intermediate magnetic layer is between the first side magnetic layer and the first counter side magnetic layer in a second direction.

The present application provides a method and an apparatus of actively sensing a neuronal firing frequency at a functional site in a brain, the method comprising: generating a varying electromagnetic field and acting a near field of the generated electromagnetic field on a targeted brain functional site; sensing the alteration of the electromagnetic field at the targeted brain functional site; and determining a variation frequency of the alteration of the electromagnetic field at the targeted brain functional site as the neuronal firing frequency at the targeted brain functional site.

The present application provides a method and an apparatus of actively sensing a neuronal firing frequency at a functional site in a brain, the method comprising: generating a varying electromagnetic field and acting a near field of the generated electromagnetic field on a targeted brain functional site; sensing the alteration of the electromagnetic field at the targeted brain functional site; and determining a variation frequency of the alteration of the electromagnetic field at the targeted brain functional site as the neuronal firing frequency at the targeted brain functional site.

An information processing apparatus includes a display control unit. The display control unit is configured to perform control to display a signal source in a superimposed manner on a plurality of biological tomographic images sliced in a predetermined direction, the signal source corresponding to a part of biological data indicating a temporal change of a biological signal, and initially display, in a display region of a screen of a display unit, a biological tomographic image on which a predetermined signal source is superimposed among the plurality of sliced biological tomographic images.

An exemplary magnetic field measurement system includes a wearable sensor unit that includes a magnetometer and a twisted pair cable interface assembly electrically connected to the magnetometer.

An exemplary magnetic field measurement system includes a wearable sensor unit that includes a magnetometer and a twisted pair cable interface assembly electrically connected to the magnetometer.

A brain measurement apparatus includes: a magnetoencephalograph including optically pumped magnetometers, magnetic sensors for measuring geomagnetic field at positions of the optically pumped magnetometers, magnetic sensors for measuring a fluctuating magnetic field at the positions of the optically pumped magnetometers, nulling coils for cancelling the geomagnetic field, and an active shield coil for cancelling the fluctuating magnetic field; an MRI apparatus including nulling coils for applying a static magnetic field and a gradient magnetic field, a transmission coil, and a receive coil; and a control device that, when measuring a brain's magnetic field, controls currents supplied to the nulling coils and the active shield coil based on measured values of the magnetic sensors and, when measuring an MR image, controls the static magnetic field and the gradient magnetic field by controlling currents supplied to the nulling coils and generates an MR image from an output of the receive coil.