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cEEGrid Guide

First-Pass Study Notes

These notes are a machine-generated reading scaffold. They do not replace close manual extraction from Methods, Results, figures, and tables.

Workflow

  1. Start from library/READING_INDEX.md.
  2. Open the PDF and its matching text file side by side.
  3. Fill the paper cards required by Prompt_EarEEG_cEEGrid_Review.md using explicit page/section references.
  4. Mark missing parameters as Not reported instead of inferring.

Completed Detailed Batches

  • library/DETAILED_PAPER_CARDS_BATCH_1.md: close-reading cards for Looney 2011, Looney 2012, Kidmose 2012, Kidmose 2013, Debener 2015, and Bleichner & Debener 2017.
  • library/DETAILED_PAPER_CARDS_BATCH_2.md: close-reading cards for Mikkelsen 2015, Bleichner 2015, Norton 2015, Bleichner 2016, and Mirkovic 2016.
  • library/DETAILED_PAPER_CARDS_BATCH_3.md: close-reading cards for Goverdovsky 2016, Pacharra 2017, Sterr 2018, Denk 2018, and Mikkelsen 2019.
  • library/DETAILED_PAPER_CARDS_BATCH_4.md: close-reading cards for Reali/Knierim 2021, Knierim 2022 HardwareX adapter, Holtze 2022, Knierim 2023, and Van Den Broucke 2023.
  • library/DETAILED_PAPER_CARDS_BATCH_5.md: close-reading cards for Zhu 2024 and Geirnaert/Kappel/Kidmose 2025 recent AAD and direct modality comparison preprints.
  • library/EVIDENCE_MATRIX.md: one-row-per-paper synthesis for route, task, evidence strength, limitations, and self-developed system use.
  • library/SECONDARY_SYNTHESIS_MAINLINES.md: second-pass synthesis across hardware, electrode, experiment, signal-processing, and engineering mainlines.
  • library/GAP_AUDIT_AND_VERIFICATION_PLAN.md: missing-field audit for uncertain hardware, electrode, reference/ground, sampling, and processing details.
  • Ear_EEG_cEEGrid_Systematic_Review_Draft.md: narrative working draft built from the detailed cards and evidence matrix.

Suggested Reading Order

  1. Bleichner & Debener, 2017 - terminology and transparent EEG framing.
  2. Looney 2011/2012 and Kidmose 2012/2013 - in-ear and early ear-EEG foundations.
  3. Debener 2015 - cEEGrid origin and smartphone/flexible electrode validation.
  4. Bleichner 2016, Mirkovic 2016, Pacharra 2017 - task validation.
  5. Sterr 2018 and Mikkelsen 2019 - sleep and long-duration monitoring.
  6. Reali 2021, Knierim 2022/2023, Van Den Broucke 2023 - OpenBCI adapter design, low-cost amplifier benchmarking, and wireless/high-sampling hardware.
  7. Zhu 2024 and Geirnaert 2025 - recent AAD and direct modality comparison.

Initial Category Map

01_in_ear_foundations

    1. Looney et al., 2011: in-ear EEG / early in-ear EEG
    1. Looney et al., 2012: in-ear EEG / early in-ear EEG
    1. Kidmose et al., 2012: ear-EEG / evoked-potential validation
    1. Kidmose et al., 2013: ear-EEG / evoked-potential validation

02_characterization_and_ceegrid_origin

    1. Mikkelsen et al., 2015: ear-EEG / method characterization
    1. Bleichner et al., 2015: miniaturized EEG / concealed EEG precursor
    1. Debener et al., 2015: around-the-ear cEEGrid / cEEGrid origin
    1. Norton et al., 2015: auricle / soft electronics / auricular BCI hardware

03_ceegrid_task_validation

    1. Bleichner et al., 2016: around-the-ear cEEGrid / auditory attention validation
    1. Mirkovic et al., 2016: around-the-ear cEEGrid / target speaker detection
    1. Goverdovsky et al., 2016: in-ear EEG / 24/7 in-ear monitoring
    1. Bleichner & Debener, 2017: around-the-ear cEEGrid / transparent EEG review
    1. Pacharra et al., 2017: around-the-ear cEEGrid / visual cognition validation

04_sleep_hearing_real_world

    1. Sterr et al., 2018: behind-the-ear cEEGrid / sleep PSG comparison
    1. Denk et al., 2018: in-ear and around-ear / hearing-device ERP
    1. Mikkelsen et al., 2019: around-the-ear EEG / sleep/wake machine learning
    1. Reali et al., 2021: OpenBCI + cEEGrid / open-source real-world BCI

05_open_hardware_benchmarking

    1. Knierim et al., 2022: OpenBCI + cEEGrid adapter / open hardware
    1. Holtze et al., 2022: ear-EEG / cEEGrid / continuous-speech AAD
    1. Knierim et al., 2023: around-the-ear cEEGrid / amplifier benchmarking
    1. Van Den Broucke et al., 2023: wireless around-the-ear cEEGrid / wireless hardware

06_recent_preprints_comparisons

    1. Zhu et al., 2024: ear-EEG / multi-speaker AAD
    1. Geirnaert et al., 2025: scalp / around-ear / in-ear EEG / direct modality comparison