A system for detecting bioelectrical signals of a user comprising: a set of sensors configured to detect bioelectrical signals from the user, each sensor in the set of sensors configured to provide non-polarizable contact at the body of the user; an electronics subsystem comprising a power module configured to distribute power to the system and a signal processing module configured to receive signals from the set of sensors; a set of sensor interfaces coupling the set of sensors to the electronics subsystem and configured to facilitate noise isolation within the system; and a housing coupled to the electronics subsystem, wherein the housing facilitates coupling of the system to a head region of the user.

A biosignal measurement apparatus (10) that is used by being affixed on a living body is provided with: an affixed part (115) that is a sheet, in which a signal-acquiring section (110) of multiple electrodes and wiring connected to each of the electrodes are formed, and which can be freely expanded, contracted and bent and is adhesive; and a substrate (500) that is connected to the wiring and on which a signal-processing circuit for wirelessly transmitting biosignals obtained through the wiring is mounted. The signal-acquiring section (110) is exposed on the surface of the affixed part (115) and the affixed part (115) and the substrate (500) are stacked so that the back surface of the affixed part (115) faces the substrate.

The present disclosure provides electroretinography devices configured to detect biopotential signals from an eye of a subject. In some embodiments, the device is configured to prevent the subject's eyelids from closing over the device when placed in contact with the anterior surface of the subject's eye. In some embodiments, the device has a Young's modulus of no more than about 50 MPa. In some embodiments, the device includes a diffusing or refracting element configured to scatter, focus or diverge incident light. In other embodiments, the device includes a void through which incident light can enter the subject's eye without passing through any portion of the device.

An example system disclosed herein includes an analyzer to analyze first neuro-response data from a first frequency band of a first subject exposed to source material and second neuro-response data from a second frequency band of the first subject and a selector to identify a candidate location in the source material for introduction of an advertisement or entertainment based on a degree of coherence between a first change in amplitude of the first frequency band measured before a neurological event and a second change in amplitude of the second frequency band measured before the neurological event. The analyzer is to analyze third neuro-response data from at least one of the first subject or a second subject exposed to a combination of the source material and the advertisement or entertainment inserted in the candidate location and determine an effectiveness of the advertisement or entertainment based on the third neuro-response data.

A reliable content evaluation method and system are disclosed. The system includes a brainwave detector, a bio signal detector, a first controller, and a second controller. The brainwave detector detects a brainwave signal of a subject provided with content and outputs a result. The bio signal detector detects bio signals of the subject and outputs a result. The first controller can modify the brainwave and the bio signals to a signal level available for the second controller. The second controller detects change of the brainwave signal and the bio signal through an analysis of the brain wave signal and the bio signal from the first controller. Then, the second controller determines at least one of a degree of engagement and an emotional reaction of the subject to the content, using changes in the brainwave signal and the bio signal, and evaluates the content using the determined results.

Systems and apparatus for monitoring physiological electrical activity of an individual include a first electrode unit for receiving a first signal indicative of electrical activity at a first location on a body of the individual and a second electrode unit for receiving a second signal indicative of electrical activity at a second location on the body of the individual. Each of the first and second electrode units may be operated in a field-sensing mode wherein the electrode unit is placed on or in proximity to the individual's skin. The first and second electrode units comprise a capacitive sensor element, and the capacitive sensor element of each of the electrode units comprising an electrodynamic sensor which is sensitive to electromagnetic waves; and an antenna comprising an electrically conductive radiating element for receiving electromagnetic waves. The field-sensing mode can be either non-contact field-sensing mode wherein the electrode unit is placed on the individual's clothing or a contact field-sensing mode wherein the electrode unit is placed directly on the individual's skin.

A method and system for monitoring a biomedical signal employ a sensor module configured to output a continuous electrical signal by sensing the biomedical signal, a memory configured to store reference data, a transmitter configured to transmit output data via a wireless channel, and a data processing unit configured to determine whether to transmit input data via the transmitter as the output data, based on the input data, which is generated from the continuous electrical signal, and the reference data.

An example system includes a processor to determine a first distance between a first peak in a first frequency band of neuro-response data gathered from a subject while exposed to media and a second peak in the first frequency band; determine a second distance between a third peak in the first frequency band and either the second peak in the first frequency band or a fourth peak in the first frequency band; determine a first difference between the first distance and the second distance; generate a first response profile for the subject based on the first difference; and integrate the first response profile with a second response profile associated with a second subject to form an integrated response profile. A selector is to select an advertisement or entertainment for presentation based on the integrated response profile. The processor is to modify the media to present the advertisement or entertainment.

A physiological monitoring device is provided. The physiological monitoring device includes a physiological sensor, a quality estimator, and a feature extractor. The physiological sensor is configured to sense a physiological feature to generate a bio-signal. The quality estimator estimates quality of the bio-signal. The feature extractor receives the bio-signal and performs a predetermined operation to the bio-signal to obtain feature data. The amount of computation induced by the predetermined operation tier the feature extractor is changed according to the estimated quality of the bio-signal.

An electrode configured to provide electrical contact with the skin of a user and configured to be positioned on or near a mastoid region of the user is provided. The electrode comprises an electrically conductive contact configured to receive electrical signals from the skin of the user, and a skin coupler that couples the contact with the skin of the user. The skin coupler comprises an adhesive layer that adhesively engages the skin. The skin coupler also comprises a base region that surrounds the contact, and at least two extension regions that extend away from the base region.