Configuration and spatial placement of frontal electrode sensors to detect physiological signals
First Claim
1. An electroencephalography (EEG) system, comprising:
- an EEG sensor device comprising a substrate formed of an electrically insulative material and structured to allow physical contact of the device with a forehead of a user;
a first electrode configured at a first location on the substrate to acquire an EEG signal of the user from the user'"'"'s forehead;
a second electrode configured at a second location on the substrate to acquire a second EEG signal of the user as a reference signal to the EEG signal; and
a third electrode configured on the substrate to acquire a third EEG signal of the user as an electrical ground signal,wherein the third electrode is configured at a third location at least partially between the first and the second locations on the substrate, and the first location is configured above the second and third locations along a vertical direction in a frontal plane when the EEG sensor device is placed on the forehead of the user, and wherein the first electrode and the second electrode are spaced apart by at most 24 mm, andwherein, when electrically coupled to an electrical circuit, the device is operable to detect physiological signals of the user,wherein the device is implemented in the system to provide a cognitive or sensory assessment, wherein the system further comprises a data processing system in communication with the EEG sensor device and includes one or more memory units and one or more processors configured to process the detected physiological signals as physiological data to generate an information set including one or more quantitative values associated with a cognitive-sensory profile category indicative of one or more aspects of cognitive or sensory functions.
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Accused Products
Abstract
Methods, systems, and devices are disclosed for acquiring and analyzing physiological signals. In one aspect, a physiological sensor device includes a substrate formed of an electrically insulative material and structured to allow physical contact of the device with the frontal region of the head of a user, a recording electrode configured at a first location on the substrate to acquire an electrophysiological signal of the user, a reference electrode configured at a second location on the substrate to acquire a reference signal to the electrophysiological signal, and a ground electrode configured at a third location at least partially between the first and the second locations on the substrate, in which the first location is posterior to the second and third locations, and in which the device is operable when electrically coupled to an electrical circuit to detect physiological signals of the user.
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Citations
26 Claims
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1. An electroencephalography (EEG) system, comprising:
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an EEG sensor device comprising a substrate formed of an electrically insulative material and structured to allow physical contact of the device with a forehead of a user; a first electrode configured at a first location on the substrate to acquire an EEG signal of the user from the user'"'"'s forehead; a second electrode configured at a second location on the substrate to acquire a second EEG signal of the user as a reference signal to the EEG signal; and a third electrode configured on the substrate to acquire a third EEG signal of the user as an electrical ground signal, wherein the third electrode is configured at a third location at least partially between the first and the second locations on the substrate, and the first location is configured above the second and third locations along a vertical direction in a frontal plane when the EEG sensor device is placed on the forehead of the user, and wherein the first electrode and the second electrode are spaced apart by at most 24 mm, and wherein, when electrically coupled to an electrical circuit, the device is operable to detect physiological signals of the user, wherein the device is implemented in the system to provide a cognitive or sensory assessment, wherein the system further comprises a data processing system in communication with the EEG sensor device and includes one or more memory units and one or more processors configured to process the detected physiological signals as physiological data to generate an information set including one or more quantitative values associated with a cognitive-sensory profile category indicative of one or more aspects of cognitive or sensory functions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A wearable physiological sensor device, consisting of:
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a substrate formed of a mechanically flexible and an electrically insulative material and structured to allow physical contact of the device with a forehead of a user; three electrodes on the substrate arranged along a vertical direction in a frontal plane when the physiological sensor device is placed on the forehead of the user, including; a first electrode configured at a first location on the substrate to acquire an electrophysiological signal of the user, a second electrode configured at a second location below the first location on the substrate to acquire a second electrophysiological signal of the user as a reference signal to the electrophysiological signal, a third electrode configured at a third location at least partially between the first and the second locations on the substrate to acquire a third electrophysiological signal of the user as an electrical ground signal, wherein the first electrode and the second electrode are spaced apart by at most 24 mm; an electrical circuit on the substrate in electrical communication with the first, second, and third electrodes via electrically conductive conduits, the electrical circuit including an amplification circuit and a signal processing circuit to amplify and signal process the electrophysiological signals; a transmitter unit on the substrate in electrical communication with the electrical circuit to transmit the amplified and signal processed electrophysiological signals to at least one of a data processing unit or a remote computer system; and a power supply module electrically coupled to the transmitter unit to provide electrical power to the transmitter unit. - View Dependent Claims (16, 17)
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18. An electroencephalography (EEG) sensor device, comprising:
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a substrate formed of an electrically insulative material and structured to allow physical contact of the device with a forehead of a user; a first electrode configured at a first location on the substrate to acquire an EEG signal of the user from the user'"'"'s forehead; a second electrode configured at a second location on the substrate to acquire a second EEG signal of the user as a reference signal to the EEG signal; a third electrode configured on the substrate to acquire a third EEG signal of the user as an electrical ground signal, wherein the third electrode is configured at a third location at least partially between the first and the second locations on the substrate, and the first location is configured above the second and third locations along a vertical direction in a frontal plane when the EEG sensor device is placed on the forehead of the user, and wherein the first electrode and the second electrode are spaced apart by at most 24 mm; and an electrical circuit including a signal processing circuit formed on the substrate in electrical communication with the first, second, and third electrodes via electrically conductive conduits, the signal processing circuit to amplify acquired EEG signals, and a transmitter unit on the substrate in electrical communication with the signal processing circuit to transmit the amplified EEG signals to at least one of a data processing unit or a remote computer system, wherein the device is operable to detect physiological signals of the user. - View Dependent Claims (19, 20)
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21. A method to provide a cognitive or sensory assessment of a subject, comprising:
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acquiring EEG signals of the subject from the frontal region of the subject'"'"'s head to produce physiological data using a system comprising a sensor device including; a substrate formed of an electrically insulative material and structured to allow physical contact of the sensor device with the frontal region of the head of the subject, and three electrodes including a recording electrode, a reference electrode, and a ground electrode to acquire the EEG signals of the subject from three respective positions arranged on the substrate along a vertical direction of the frontal region, wherein the recording electrode is configured above the ground and reference electrodes, and the ground electrode is configured between the recording and reference electrodes, and wherein the recording electrode and the reference electrode are spaced apart by at most 24 mm, and wherein the sensor device is implemented in the system to provide a cognitive or sensory assessment, wherein the system further comprise a data processing system in communication with the sensor device and includes one or more memory units and one or more processors configured to process the acquired EEG signals as physiological data; and processing, by the system, the physiological data to generate an information set including one or more quantitative values associated with a cognitive-sensory profile category indicative of one or more aspects of cognitive or sensory functions. - View Dependent Claims (22, 23, 24, 25, 26)
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Specification