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    CONNECTION QUALITY ASSESSMENT FOR EEG ELECTRODE ARRAYS
    1.
    发明申请
    CONNECTION QUALITY ASSESSMENT FOR EEG ELECTRODE ARRAYS 有权

    公开(公告)号：US20220031248A1

    公开(公告)日：2022-02-03

    申请号：US17203464

    申请日：2021-03-16

    Applicant: CeriBell, Inc.

    Inventor： Alexander M. GRANT ,  Jianchun YI ,  Bradley G. BACHELDER ,  Raymond WOO ,  Josef PARVIZI ,  Xingjuan CHAO

    IPC: A61B5/00 ,  A61N1/37 ,  A61N1/02 ,  A61N1/36 ,  A61B5/24 ,  A61B5/287 ,  A61B5/369

    Abstract: Systems, devices, and methods are provided to assess connection quality between the electrodes of a bioelectrical signal measurement and/or electrical stimulation device and the tissue, typically skin, of the subject. A test signal is provided to a first electrode, voltage differences between the first electrode and additional electrodes are determined, an impedance of the first electrode is determined based on the voltages differences, and the determined impedance indicates connection quality. This process is typically repeated for all of the electrodes to determine connection quality. The user or subject can be alerted if the connection quality is poor, and the bioelectrical signal that is recorded can be provided with data points indicating connection quality during the signal recording.

    SYSTEMS AND METHODS FOR SEIZURE PREDICTION AND DETECTION
    7.
    发明申请
    SYSTEMS AND METHODS FOR SEIZURE PREDICTION AND DETECTION 有权

    公开(公告)号：US20210085235A1

    公开(公告)日：2021-03-25

    申请号：US16923689

    申请日：2020-07-08

    Applicant: CeriBell, Inc.

    Inventor： Baharan Kamousi ,  Mehdi Hajinoroozi ,  Suganya Karunakaran ,  Alexander M. Grant ,  Jianchun Yi ,  Raymond Woo ,  Josef Parvizi ,  Xingjuan Chao

    IPC: A61B5/00 ,  A61B5/0476 ,  G06F9/54 ,  G06N20/00

    Abstract: The present disclosure provides systems and methods for seizure detection. The method for seizure detection may include receiving a plurality of electroencephalography (EEG) signals over a plurality of channels for a subject, preprocessing the plurality of EEG signals by segmenting the plurality of EEG signals for each channel into a plurality of temporal data segments, extracting a plurality of features from each temporal data segment for each channel, and applying a machine learning algorithm to the plurality of features to perform a seizure binary classification for each temporal data segment for each channel. A control policy may be employed to determine a seizure burden on the aggregated seizure binary classifications. When the seizure burden is equal to or exceeds a threshold, a notification may be generated. The notification may be usable by a healthcare practitioner to assess whether the subject may be at risk of having a seizure.

    SYSTEMS AND METHODS FOR PROCESSING SONIFIED BRAIN SIGNALS
    8.
    发明申请
    SYSTEMS AND METHODS FOR PROCESSING SONIFIED BRAIN SIGNALS 有权

    公开(公告)号：US20210267539A1

    公开(公告)日：2021-09-02

    申请号：US17083078

    申请日：2020-10-28

    Applicant: CeriBell, Inc.

    Inventor： Alexander GRANT ,  Chris CHAFE ,  Josef PARVIZI ,  Jianchun YI ,  Raymond WOO ,  Xingjuan CHAO

    IPC: A61B5/00 ,  G10L25/51 ,  H04R3/04 ,  A61B5/318 ,  A61B5/369 ,  A61B5/389 ,  A61B5/398

    Abstract: Systems and methods for sonifying electrical signals obtained from a living subject, particularly EEG signals, are disclosed. A time-domain signal representing the activity of an organ is obtained. A voltage of the time-domain signal over a time block is determined. An acoustic signal based on the time-domain signal over the time block is produced. The acoustic signal comprises one or more audibly discernible variations representative of the activity of the organ. If the determined voltage is over a threshold voltage, the time-domain signal is squelched over at least a portion of the time-block as the acoustic signal is produced. The time-domain signal can be squelched by ramping down the signal as an input to produce the acoustic signal. The frequency spectrum of the acoustic signal can also be adjusted as it is produced, such as by flattening the signal and/or attenuating high frequencies along the frequency spectrum of the signal.

    Systems and methods for processing sonified brain signals
    10.
    发明授权
    Systems and methods for processing sonified brain signals 有权

    公开(公告)号：US10849553B2

    公开(公告)日：2020-12-01

    申请号：US16367040

    申请日：2019-03-27

    Applicant: CeriBell, Inc.

    Inventor： Alexander Grant ,  Chris Chafe ,  Josef Parvizi ,  Jianchun Yi ,  Raymond Woo ,  Xingjuan Chao

    IPC: A61B5/04 ,  A61B5/00 ,  A61B5/0402 ,  G10L25/51 ,  A61B5/0488 ,  A61B5/0496 ,  H04R3/04 ,  A61B5/0476

    Abstract: Systems and methods for sonifying electrical signals obtained from a living subject, particularly EEG signals, are disclosed. A time-domain signal representing the activity of an organ is obtained. A voltage of the time-domain signal over a time block is determined. An acoustic signal based on the time-domain signal over the time block is produced. The acoustic signal comprises one or more audibly discernible variations representative of the activity of the organ. If the determined voltage is over a threshold voltage, the time-domain signal is squelched over at least a portion of the time-block as the acoustic signal is produced. The time-domain signal can be squelched by ramping down the signal as an input to produce the acoustic signal. The frequency spectrum of the acoustic signal can also be adjusted as it is produced, such as by flattening the signal and/or attenuating high frequencies along the frequency spectrum of the signal.

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