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Open-cEEGrid Kit

Regular price $ 799.99 USD
Regular price Sale price $ 799.99 USD
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Product Overview

Open-cEEGrid is a flexible, re-usable and convenient around-the-ear electrode array designed to sample EEG and other physiological signals.


    The Open-cEEGrid is designed to pair with the OpenBCI CytonDaisy 16-channel board (sold separately).

    Open-cEEGrids are a flexible, re-usable and convenient around-the-ear electrode array that capture EEG and other physiological phenomena. This biosignal acquisition system allows the discrete recording of electrophysiological changes (e.g., EEG, ECG, EMG) from inconspicuous electrodes positioned around the ears.

    What's included in the Open-cEEGrid Kit:

     Item Description QTY
    Adapter  2
    Connector Cables  20
    Enclosure  1
    Baseball Cap 1
    Headband  1
    Pair of Open-cEEGrid Replacement stickers 15
    Pair of Gold-Plated open-cEEGrid 3
    Alcohol Cleaning Pad Pack 1
    AbrasivPlus Electrolyte Gel 1
    Blunt Syringe  2
    Applicator  1

    Assembly Required - See Product Guide


    FREE Software Included:

    The OpenBCI GUI is OpenBCI's powerful software tool for visualizing, recording, and streaming data from OpenBCI boards. Provided free and open-source with no extra charges or add-ons for accessing the raw data.

    OpenBCI GUI - Download
    OpenBCI GUI - Documentation


    Scientific Validation:

    Wearable electroencephalography (EEG) has the potential to improve everyday life through brain–computer interfaces (BCI) for applications such as sleep improvement, adaptive hearing aids, or thought-based digital device control.

    OpenBCI's mission is to democratize access to neuroscience research, knowledge, and tools. We partnered with researchers to export cEEGrid out of the lab and into the hands of anyone who wants to use EEG in real life. 

    Ear-centered EEG has been validated in a range of studies:
    • Debener et al. 2015: ERP and P300 data obtained via unobtrusive ambulatory EEG using a smartphone and cEEGrid
    • Bleichner and Debener 2017: cEEGrid enables the recording of meaningful continuous EEG, event-related potentials and neural oscillations
    • Holtze et al. 2022: Ear-EEG via mobile cEEGrid comparable to traditional high-density EEG caps for measurement of auditory attention to continuous speech
    Scientific validation of OpenBCI bio-amplifiers for ear-centered EEG:

    cEEGrids for sleep stage classification research:

    Information on recording suitability: Kurniawan et al. 2022 highlights lower impedance of gold (Au) electrodes in the 1-1000Hz region than Ag/AgCl. Gold electrodes are suitable for biosignal recordings like EEG.

    At the same time, gold electrodes are known to polarize, which can complicate ERP recordings. Therefore, the gold-plated Open-cEEGrids are recommended for oscillatory EEG (frequency band power) and ECG, EOG, and EMG recordings instead of ERP.

    Shipping FAQ

    ALL OpenBCI orders ship from the US. We ship worldwide!

    To estimate the total import duty and tax, use this calculator. Enter the HS code 85444200 when prompted. Please be advised that product prices do not include customs fees, import taxes, brokerage fees, or any customs clearance fees. This is the responsibility of the customer.

    If shipping to Europe, please expect the total import cost to be about 25% of the product price. If shipping to other countries, it is 10-20%. Have questions about shipping internationally? Email


    OpenBCI products are not medical devices nor are they intended for medical diagnosis and are provided to you "as is," and we make no express or implied warranties whatsoever with respect to its functionality, operability, or use, including, without limitation, any implied warranties, fitness for a particular purpose, or infringement. We expressly disclaim any liability whatsoever for any direct, indirect, consequential, incidental or special damages, including, without limitation, lost revenues, lost profits, losses resulting from business interruption or loss of data, regardless of the form of action or legal theory under which the liability may be asserted, even if advised of the possibility of such damages.

    Refund Policy here