Systems, Circuits, and Methods for Reducing Common-mode Noise in Biopotential Recordings

    公开(公告)号:US20210259638A1

    公开(公告)日:2021-08-26

    申请号:US17176315

    申请日:2021-02-16

    申请人: HI LLC

    摘要: An illustrative biopotential measurement system includes a plurality of electrodes each configured to record a different signal included in a plurality of signals representative of electrical activity of a target within a user; a plurality of non-inverting operational amplifier circuits each connected to a different electrode included in the plurality of electrodes and each configured to output a different amplified signal included in a plurality of amplified signals representative of amplified versions of the plurality of signals; and a common-mode feedback circuit configured to measure a common-mode signal between the plurality of amplified signals and provide the common-mode signal to the non-inverting operational amplifier circuits. The non-inverting operational amplifier circuits are configured to use the common-mode signal to generate voltage-divided feedback signals used to generate the plurality of amplified signals.

    SYSTEM AND METHOD FOR PROVIDING FOUR RING VISUAL ELECTROPHYSIOLOGY STIMULUS

    公开(公告)号:US20220079503A1

    公开(公告)日:2022-03-17

    申请号:US17473144

    申请日:2021-09-13

    申请人: Diagnosys LLC

    发明人: Jeffrey D. Farmer

    摘要: A system for testing different regions of the retina of a subject for retinal function, said system comprising: a monitor configured to display a visual electrophysiology stimulus to the subject, wherein the visual electrophysiology stimulus comprises a four ring visual electrophysiology stimulus; at least one active electrode; at least one reference electrode; and a computer configured to receive electrical signals from said at least one active electrode and said at least one reference electrode, and process the electrical signals.

    POLYSOMNOGRAPHY MONITORING CAP
    6.
    发明申请

    公开(公告)号:US20210315518A1

    公开(公告)日:2021-10-14

    申请号:US17111171

    申请日:2020-12-03

    摘要: The present disclosure relates to a polysomnography monitoring cap, including a cap body and a plurality of electrodes preset on the cap body, where the cap body includes a head cover sheet for covering a head and a chin cover sheet for covering a mandible, and the head cover sheet and the chin cover sheet are connected into an integral cover sheet; the electrodes include a scalp electrode, an eye electrode and a mandible muscle electrode, where the scalp electrode is preset on the head cover sheet according to the international EEG positioning standard, the mandible muscle electrode is preset on the chin cover sheet, and the eye electrode is hung on the cap by a lead wire. According to the present disclosure, a scalp electrode, a mandible muscle electrode and an eye electrode are preset.

    CONTROL OF PARAMETERS OF HEARING INSTRUMENT BASED ON EAR CANAL DEFORMATION AND CONCHA EMG SIGNALS

    公开(公告)号:US20220394396A1

    公开(公告)日:2022-12-08

    申请号:US17820192

    申请日:2022-08-16

    摘要: A processing system obtains a deformation signal generated by a deformation sensor. The deformation signal is indicative of a deformation of an outer ear of a user of a hearing instrument. Additionally, the processing system obtains an EMG signal generated by an electrode in a concha of the user, wherein the electrode is configured to detect activity of an intrinsic auricular muscle of the user. Furthermore, the processing system generates information regarding an auditory attention state of the user based on the deformation signal and the EMG signal. The processing system controls, based on the information regarding the auditory attention state of the user, the parameter of the audio system.