Page-Level Evidence Index

Evidence snippets are extracted from local text files generated from US-pdf/. Use these as reading anchors; verify final claims against the PDF pages.

01. Looney et al., 2011 (2011)

• Title: An In-The-Ear Platform for Recording Electroencephalogram
• Route: in-ear EEG
• PDF: library/pdfs_by_category/01_in_ear_foundations/01_2011_looney_et_al_an_in_the_ear_platform_for_recording_electroencephalogram.pdf
• Text: library/texts/01_in_ear_foundations/01_2011_looney_et_al_an_in_the_ear_platform_for_recording_electroencephalogram.txt

hardware

• p. 1: amplifier, earpiece, electrode, electrodes
• p. 2: amplifier, earpiece, electrode, electrodes, ground, reference
• p. 3: electrode, electrodes

electrode_layout

• p. 1: Fig. 1, ear canal, left ear, temporal
• p. 2: Fig. 1, ear canal, left ear, mastoid, temporal
• p. 3: 10-20
• p. 4: ear canal

experiment

• p. 1: attention, sleep, subjects
• p. 3: eyes closed, eyes open
• p. 4: attention, eyes closed, eyes open, sleep

signal_processing

• p. 1: ICA, accuracy
• p. 2: ICA, artifact, bandpass, filter, filtered
• p. 3: ICA, bandpass, filter, filtered, notch

results

• p. 1: accuracy, demonstrate, feasibility, results
• p. 2: compared, feasibility
• p. 3: correlation, results
• p. 4: correlation, results

limitations

• p. 1: comfort, hair
• p. 2: EOG, artifact, comfort, movement, noise
• p. 3: EOG, artifact
• p. 4: impedance

02. Looney et al., 2012 (2012)

• Title: The In-the-Ear Recording Concept: User-Centered and Wearable Brain Monitoring
• Route: in-ear EEG
• PDF: library/pdfs_by_category/01_in_ear_foundations/02_2012_looney_et_al_the_in_the_ear_recording_concept_user_centered_and_wearable_brain_monitoring.pdf
• Text: library/texts/01_in_ear_foundations/02_2012_looney_et_al_the_in_the_ear_recording_concept_user_centered_and_wearable_brain_monitoring.txt

hardware

• p. 1: amplifier, electrode, electrodes, impedance
• p. 2: amplifier, electrode, electrodes
• p. 3: amplifier, earpiece, electrode, electrodes, wireless

electrode_layout

• p. 1: ear canal, temporal
• p. 3: Figure 1, ear canal, right ear
• p. 4: concha, ear canal
• p. 5: Figure 1, ear canal, mastoid, right ear, temporal

experiment

• p. 1: attention, sleep, stimuli
• p. 2: attention, sleep
• p. 4: eyes open, subjects
• p. 5: ASSR, subjects
• p. 6: P300, eyes closed, eyes open

signal_processing

• p. 1: ICA
• p. 2: ICA
• p. 3: ICA, artifact
• p. 4: ICA, alpha, artifact, bandpass, filter, filtered
• p. 5: power spectral
• p. 6: filtered

results

• p. 1: feasibility
• p. 2: performance, significant
• p. 3: compared
• p. 6: compared, correlation, results
• p. 7: confirmed, correlation, results
• p. 8: results
• p. 9: results

limitations

• p. 1: comfort, impedance
• p. 2: comfort, hair, limitation, limitations, noise
• p. 3: artifact, comfort, motion
• p. 4: artifact
• p. 6: noise

03. Kidmose et al., 2012 (2012)

• Title: Auditory evoked responses from Ear-EEG recordings
• Route: ear-EEG
• PDF: library/pdfs_by_category/01_in_ear_foundations/03_2012_kidmose_et_al_auditory_evoked_responses_from_ear_eeg_recordings.pdf
• Text: library/texts/01_in_ear_foundations/03_2012_kidmose_et_al_auditory_evoked_responses_from_ear_eeg_recordings.txt

hardware

• p. 1: amplifier, earpiece, electrode, electrodes, g.USBamp, ground, impedance, reference
• p. 2: electrode, electrodes, reference

electrode_layout

• p. 1: Fig. 1, concha, ear canal
• p. 2: Fig. 1, Figure 1, ear canal, left ear, right ear, temporal
• p. 3: right ear
• p. 4: concha, ear canal

experiment

• p. 1: AEP, ASSR, stimuli
• p. 2: ASSR, resting
• p. 3: AEP, ASSR, stimuli
• p. 4: AEP, ASSR, attention, stimuli

signal_processing

• p. 1: ICA, alpha, correlation
• p. 2: ICA
• p. 3: ERP, ICA
• p. 4: ERP, ICA

results

• p. 1: compared, correlation, performance, results
• p. 2: compared, demonstrate, results, significant
• p. 3: results
• p. 4: compared, demonstrate, results

limitations

• p. 1: impedance, noise
• p. 2: noise

04. Kidmose et al., 2013 (2013)

• Title: A Study of Evoked Potentials From Ear-EEG
• Route: ear-EEG
• PDF: library/pdfs_by_category/01_in_ear_foundations/04_2013_kidmose_et_al_a_study_of_evoked_potentials_from_ear_eeg.pdf
• Text: library/texts/01_in_ear_foundations/04_2013_kidmose_et_al_a_study_of_evoked_potentials_from_ear_eeg.txt

hardware

• p. 1: earpiece, electrode, electrodes
• p. 2: amplifier, earpiece, electrode, electrodes, g.USBamp, ground, impedance, reference
• p. 3: electrode

electrode_layout

• p. 1: Fig. 1, ear canal, temporal
• p. 2: Fig. 1, concha, ear canal, right ear, temporal
• p. 3: temporal
• p. 4: ear canal, left ear, temporal

experiment

• p. 1: ASSR, subjects, visual
• p. 2: stimuli
• p. 3: ASSR, stimuli, subjects, visual
• p. 4: ASSR, subjects, visual
• p. 5: subjects

signal_processing

• p. 1: ERP, ICA
• p. 2: ERP, ICA
• p. 3: ERP, ICA, bandpass, filter, filtered, notch
• p. 4: ICA
• p. 5: ICA

results

• p. 1: compared, demonstrate, feasibility, results
• p. 2: significant
• p. 3: results
• p. 4: compared, performance, results, significant
• p. 5: feasibility, significant

limitations

• p. 1: comfort, noise
• p. 2: impedance
• p. 3: noise
• p. 4: noise
• p. 5: noise
• p. 6: noise

05. Mikkelsen et al., 2015 (2015)

• Title: EEG Recorded from the Ear: Characterizing the Ear-EEG Method
• Route: ear-EEG
• PDF: library/pdfs_by_category/02_characterization_and_ceegrid_origin/05_2015_mikkelsen_et_al_eeg_recorded_from_the_ear_characterizing_the_ear_eeg_method.pdf
• Text: library/texts/02_characterization_and_ceegrid_origin/05_2015_mikkelsen_et_al_eeg_recorded_from_the_ear_characterizing_the_ear_eeg_method.txt

hardware

• p. 1: electrode, electrodes, reference
• p. 2: amplifier, electrode, electrodes, ground, reference
• p. 3: electrode, electrodes, impedance, sampled at

electrode_layout

• p. 2: Figure 1, concha, ear canal, left ear
• p. 3: Figure 1, concha
• p. 4: temporal
• p. 5: right ear
• p. 6: ear canal, left ear
• p. 7: ear canal, temporal

experiment

• p. 1: Simon, subjects
• p. 2: sleep, subjects
• p. 3: ASSR, eyes closed, participants, stimuli, subjects, task
• p. 4: ASSR, subjects

signal_processing

• p. 1: ERP, ICA, alpha
• p. 2: ICA
• p. 3: ERP, ICA
• p. 4: ICA, bandpass, baseline, epoch, filter, filtered

results

• p. 1: performance, showed
• p. 2: compared, feasibility
• p. 3: significant
• p. 4: compared, correlation, results
• p. 5: correlation, significant
• p. 6: demonstrate, significant

limitations

• p. 1: noise
• p. 3: comfort, impedance, noise
• p. 4: noise
• p. 7: artifact, comfort, contact, movement
• p. 8: artifact, noise

06. Bleichner et al., 2015 (2015)

• Title: Exploring miniaturized EEG electrodes for brain-computer interfaces. An EEG you do not see?
• Route: miniaturized EEG
• PDF: library/pdfs_by_category/02_characterization_and_ceegrid_origin/06_2015_bleichner_et_al_exploring_miniaturized_eeg_electrodes_for_brain_computer_interfaces_an_eeg_you_d.pdf
• Text: library/texts/02_characterization_and_ceegrid_origin/06_2015_bleichner_et_al_exploring_miniaturized_eeg_electrodes_for_brain_computer_interfaces_an_eeg_you_d.txt

hardware

• p. 1: electrode, electrodes
• p. 2: amplifier, earpiece, electrode, electrodes, impedance, reference, wireless
• p. 3: amplifier, electrode, electrodes

electrode_layout

• p. 2: Fig. 1, Figure 1, concha, ear canal, mastoid, right ear
• p. 3: Fig. 1, concha, ear canal, mastoid, right ear
• p. 4: concha

experiment

• p. 1: P300
• p. 2: AEP, participants, task, visual
• p. 3: P300, participants, task, visual
• p. 4: P300, participants, visual

signal_processing

• p. 1: ICA
• p. 2: ERP, ICA, artifact
• p. 3: ERP, ICA, classifier, filter, filtered, re-referenced
• p. 4: ICA, artifact

results

• p. 1: results
• p. 2: compared, performance
• p. 3: significant
• p. 4: compared, correlation, results, showed, significant
• p. 5: accuracy, results, significant

limitations

• p. 1: limitation, motion, movement
• p. 2: artifact, comfort, hair, impedance, limitation, motion
• p. 3: impedance
• p. 4: artifact, small sample

07. Debener et al., 2015 (2015)

• Title: Unobtrusive ambulatory EEG using a smartphone and flexible printed electrodes around the ear
• Route: around-the-ear cEEGrid
• PDF: library/pdfs_by_category/02_characterization_and_ceegrid_origin/07_2015_debener_et_al_unobtrusive_ambulatory_eeg_using_a_smartphone_and_flexible_printed_electrodes_ar.pdf
• Text: library/texts/02_characterization_and_ceegrid_origin/07_2015_debener_et_al_unobtrusive_ambulatory_eeg_using_a_smartphone_and_flexible_printed_electrodes_ar.txt

hardware

• p. 1: cEEGrid, electrode, electrodes, smartphone, wireless
• p. 2: Ag/AgCl, cEEGrid, electrode, electrodes, impedance, smartphone, wireless

electrode_layout

• p. 1: around the ear, c-shape
• p. 2: Fig. 1, Figure 1, around the ear, c-shape, layout, mastoid, right ear
• p. 3: around the ear, left ear, temporal

experiment

• p. 1: P300, auditory oddball, eyes closed, eyes open, participants, resting
• p. 2: auditory oddball, eyes closed, eyes open, resting
• p. 3: participants, volunteers

signal_processing

• p. 1: ERP, ICA, accuracy, classifier
• p. 2: ERP, ICA, alpha, classifier, re-referenced
• p. 3: ICA, artifact
• p. 4: filtered

results

• p. 1: accuracy, compared, confirmed, demonstrate, feasibility, performance, reliability, results
• p. 4: accuracy, results, significant

limitations

• p. 1: comfort, motion
• p. 2: comfort, hair, impedance
• p. 3: artifact, comfort, impedance, limitation, limitations, movement
• p. 4: artifact

08. Norton et al., 2015 (2015)

• Title: Soft, curved electrode systems capable of integration on the auricle as a persistent brain-computer interface
• Route: auricle / soft electronics
• PDF: library/pdfs_by_category/02_characterization_and_ceegrid_origin/08_2015_norton_et_al_soft_curved_electrode_systems_capable_of_integration_on_the_auricle_as_a_persist.pdf
• Text: library/texts/02_characterization_and_ceegrid_origin/08_2015_norton_et_al_soft_curved_electrode_systems_capable_of_integration_on_the_auricle_as_a_persist.txt

hardware

• p. 1: electrode, electrodes, impedance
• p. 2: amplifier, electrode, electrodes, ground, reference
• p. 3: electrode, electrodes, ground, impedance

electrode_layout

• p. 1: auricle, ear canal, mastoid
• p. 2: Fig. 1, around the ear, auricle, layout, mastoid
• p. 3: Fig. 1, auricle, mastoid
• p. 4: mastoid

experiment

• p. 1: P300, sleep, visual
• p. 2: P300, visual
• p. 3: P300, subjects
• p. 4: P300, eyes closed, eyes open
• p. 5: subjects, volunteers

signal_processing

• p. 1: ICA
• p. 2: ERP, ICA, alpha
• p. 3: ERP, ICA, alpha
• p. 4: ICA, alpha
• p. 5: ICA, filter, notch

results

• p. 1: demonstrate, performance, significant
• p. 2: demonstrate, results, significant
• p. 3: demonstrate, results, significant
• p. 4: significant
• p. 5: accuracy, results

limitations

• p. 1: comfort, contact, impedance, limitation, limitations
• p. 2: contact
• p. 3: contact, hair, impedance, motion, noise
• p. 4: noise

09. Bleichner et al., 2016 (2016)

• Title: Identifying auditory attention with ear-EEG: cEEGrid versus high-density cap-EEG comparison
• Route: around-the-ear cEEGrid
• PDF: library/pdfs_by_category/03_ceegrid_task_validation/09_2016_bleichner_et_al_identifying_auditory_attention_with_ear_eeg_ceegrid_versus_high_density_cap_eeg_.pdf
• Text: library/texts/03_ceegrid_task_validation/09_2016_bleichner_et_al_identifying_auditory_attention_with_ear_eeg_ceegrid_versus_high_density_cap_eeg_.txt

hardware

• p. 1: cEEGrid, electrode, electrodes
• p. 2: cEEGrid, electrode
• p. 3: Ag/AgCl, cEEGrid, electrode, electrodes, impedance, smartphone, wireless

electrode_layout

• p. 2: right ear
• p. 3: Figure 1, around the ear, c-shape, concha, mastoid
• p. 4: around the ear, temporal
• p. 5: around the ear, mastoid
• p. 6: layout
• p. 7: temporal

experiment

• p. 1: attention, speech, subjects
• p. 2: attention, participants, task
• p. 3: attention
• p. 4: attention, participants, task
• p. 5: AEP, participants

signal_processing

• p. 1: ERP, ICA
• p. 2: ERP, ICA
• p. 3: ERP, ICA
• p. 4: ICA
• p. 5: ICA, artefact, artifact, epoch
• p. 6: ICA

results

• p. 2: demonstrate, feasibility, results, showed
• p. 3: results
• p. 4: performance, showed
• p. 5: results
• p. 6: accuracy, compared, correlation, results

limitations

• p. 2: limitation, limitations
• p. 3: comfort, contact, impedance
• p. 4: comfort, hair, impedance
• p. 5: artefact, artifact, movement
• p. 6: artifact

10. Mirkovic et al., 2016 (2016)

• Title: Target Speaker Detection with Concealed EEG Around the Ear
• Route: around-the-ear cEEGrid
• PDF: library/pdfs_by_category/03_ceegrid_task_validation/10_2016_mirkovic_et_al_target_speaker_detection_with_concealed_eeg_around_the_ear.pdf
• Text: library/texts/03_ceegrid_task_validation/10_2016_mirkovic_et_al_target_speaker_detection_with_concealed_eeg_around_the_ear.txt

hardware

• p. 1: cEEGrid, electrode, impedance, wireless
• p. 2: amplifier, cEEGrid, electrode, electrodes, ground, wireless
• p. 3: electrode, electrodes

electrode_layout

• p. 1: around the ear
• p. 2: around the ear, c-shape, temporal
• p. 3: Figure 1, around the ear, c-shape, layout, left ear, right ear
• p. 4: mastoid, temporal

experiment

• p. 1: attention, speaker, speech, task
• p. 2: Simon, attention, eyes open, participants, speaker, speech, stimuli, task

signal_processing

• p. 1: ICA, accuracy
• p. 2: CCA, ICA, accuracy
• p. 3: filter
• p. 4: ICA, downsample, epoch, filter, filtered, re-referenced

results

• p. 1: accuracy, performance, results
• p. 2: accuracy, performance, results
• p. 4: accuracy, performance
• p. 5: accuracy, correlation, performance
• p. 6: results

limitations

• p. 1: impedance, noise
• p. 2: comfort
• p. 3: comfort, hair, impedance
• p. 5: impedance
• p. 7: impedance
• p. 9: artifact, hair, impedance, noise

11. Goverdovsky et al., 2016 (2016)

• Title: In-Ear EEG from Viscoelastic Generic Earpieces: Robust and Unobtrusive 24/7 Monitoring
• Route: in-ear EEG
• PDF: library/pdfs_by_category/03_ceegrid_task_validation/11_2016_goverdovsky_et_al_in_ear_eeg_from_viscoelastic_generic_earpieces_robust_and_unobtrusive_24_7_monit.pdf
• Text: library/texts/03_ceegrid_task_validation/11_2016_goverdovsky_et_al_in_ear_eeg_from_viscoelastic_generic_earpieces_robust_and_unobtrusive_24_7_monit.txt

hardware

• p. 1: earpiece, electrode, electrodes, ground, impedance, reference
• p. 2: earpiece, electrode, electrodes, impedance
• p. 3: electrode, electrodes

electrode_layout

• p. 1: ear canal
• p. 2: around the ear, ear canal
• p. 3: Fig. 1, ear canal
• p. 4: ear canal
• p. 5: 10-20, Fig. 1, ear canal, left ear, mastoid, temporal

experiment

• p. 1: ASSR, sleep, visual
• p. 2: subjects
• p. 4: ASSR, sleep, subjects, visual, volunteers
• p. 5: ASSR, visual, volunteers

signal_processing

• p. 1: CCA, ICA, artefact
• p. 2: ICA, artefact
• p. 3: ERP, ICA, artefact
• p. 4: ICA, PSD, alpha, artefact

results

• p. 1: compared, demonstrate, significant
• p. 2: compared, results, significant
• p. 3: compared, performance, significant
• p. 4: demonstrate, feasibility, significant

limitations

• p. 1: artefact, contact, impedance, motion
• p. 2: ECG, artefact, comfort, contact, impedance, motion
• p. 3: artefact, noise

12. Bleichner & Debener, 2017 (2017)

• Title: Concealed, Unobtrusive Ear-Centered EEG Acquisition: cEEGrids for Transparent EEG
• Route: around-the-ear cEEGrid
• PDF: library/pdfs_by_category/03_ceegrid_task_validation/12_2017_bleichner_debener_concealed_unobtrusive_ear_centered_eeg_acquisition_ceegrids_for_transparent_eeg.pdf
• Text: library/texts/03_ceegrid_task_validation/12_2017_bleichner_debener_concealed_unobtrusive_ear_centered_eeg_acquisition_ceegrids_for_transparent_eeg.txt

hardware

• p. 1: cEEGrid, electrode, electrodes
• p. 2: amplifier, cEEGrid, electrode, electrodes, impedance, smartphone, wireless
• p. 3: electrode, electrodes

electrode_layout

• p. 1: around the ear, temporal
• p. 3: Figure 1, around the ear, concha, ear canal
• p. 4: around the ear, auricle, c-shape, mastoid, right ear, temporal

experiment

• p. 1: sleep
• p. 2: resting, speech
• p. 3: P300
• p. 4: participants, visual
• p. 5: P300, auditory oddball, participants
• p. 6: eyes closed, eyes open, participants

signal_processing

• p. 1: ICA
• p. 2: ICA
• p. 3: ERP, ICA
• p. 4: ICA, filter
• p. 5: ERP, ICA
• p. 6: ERP, ICA, accuracy, alpha

results

• p. 1: compared
• p. 2: results, showed, significant
• p. 3: results, showed
• p. 4: demonstrate
• p. 5: results
• p. 6: accuracy, compared, results, significant

limitations

• p. 1: motion
• p. 2: comfort, contact, hair, impedance, motion, movement
• p. 3: comfort, contact, hair
• p. 4: comfort, contact

13. Pacharra et al., 2017 (2017)

• Title: Concealed Around-the-Ear EEG Captures Cognitive Processing in a Visual Simon Task
• Route: around-the-ear cEEGrid
• PDF: library/pdfs_by_category/03_ceegrid_task_validation/13_2017_pacharra_et_al_concealed_around_the_ear_eeg_captures_cognitive_processing_in_a_visual_simon_tas.pdf
• Text: library/texts/03_ceegrid_task_validation/13_2017_pacharra_et_al_concealed_around_the_ear_eeg_captures_cognitive_processing_in_a_visual_simon_tas.txt

hardware

• p. 1: cEEGrid, electrode
• p. 2: cEEGrid, earpiece, electrode, electrodes, reference
• p. 3: amplifier, cEEGrid, electrode, electrodes, sampling rate

electrode_layout

• p. 2: Figure 1, around the ear, auricle, c-shape, ear canal, right ear
• p. 3: Figure 1, mastoid, right ear
• p. 5: temporal
• p. 8: temporal
• p. 9: temporal

experiment

• p. 1: P300, Simon, participants, task, visual
• p. 2: Simon, attention, participants, stimuli, task, visual
• p. 3: participants

signal_processing

• p. 1: ERP, ICA
• p. 2: ERP, ICA
• p. 3: ERP, ICA, artifact, baseline, epoch, filter, filtered, re-referenced

results

• p. 1: demonstrate, results
• p. 2: compared, demonstrate, showed, significant
• p. 4: compared, correlation, significant
• p. 5: correlation, results, significant

limitations

• p. 1: comfort, limitation, limitations, noise
• p. 2: comfort, noise
• p. 3: artifact
• p. 4: movement
• p. 9: artifact, motion, noise
• p. 10: limitation

14. Sterr et al., 2018 (2018)

• Title: Sleep EEG Derived From Behind-the-Ear Electrodes (cEEGrid) Compared to Standard Polysomnography: A Proof of Concept Study
• Route: behind-the-ear cEEGrid
• PDF: library/pdfs_by_category/04_sleep_hearing_real_world/14_2018_sterr_et_al_sleep_eeg_derived_from_behind_the_ear_electrodes_ceegrid_compared_to_standard_po.pdf
• Text: library/texts/04_sleep_hearing_real_world/14_2018_sterr_et_al_sleep_eeg_derived_from_behind_the_ear_electrodes_ceegrid_compared_to_standard_po.txt

hardware

• p. 1: amplifier, cEEGrid, electrode, electrodes, smartphone
• p. 2: Smarting, amplifier, cEEGrid, electrode, electrodes, smartphone, wireless

electrode_layout

• p. 1: behind-the-ear
• p. 2: Figure 1, mastoid
• p. 3: Figure 1
• p. 8: mastoid
• p. 9: around the ear

experiment

• p. 1: participants, polysomnography, sleep
• p. 2: P300, participants, sleep, volunteers
• p. 3: participants, sleep, visual
• p. 4: participants, sleep

signal_processing

• p. 1: ICA
• p. 2: ICA, artifact
• p. 3: ICA, alpha, artifact, correlation, epoch
• p. 4: ICA, artifact, correlation, epoch

results

• p. 1: compared
• p. 2: compared, demonstrate, showed
• p. 3: correlation, feasibility, reliability
• p. 4: compared, confirmed, correlation, results, significant

limitations

• p. 1: comfort, motion
• p. 2: ECG, EMG, EOG, artifact, movement
• p. 3: artifact, impedance
• p. 4: artifact
• p. 6: movement
• p. 7: movement

15. Denk et al., 2018 (2018)

• Title: Event-Related Potentials Measured From In and Around the Ear Electrodes Integrated in a Live Hearing Device for Monitoring Sound Perception
• Route: in-ear and around-ear
• PDF: library/pdfs_by_category/04_sleep_hearing_real_world/15_2018_denk_et_al_event_related_potentials_measured_from_in_and_around_the_ear_electrodes_integrat.pdf
• Text: library/texts/04_sleep_hearing_real_world/15_2018_denk_et_al_event_related_potentials_measured_from_in_and_around_the_ear_electrodes_integrat.txt

hardware

• p. 1: cEEGrid, electrode, electrodes
• p. 2: cEEGrid, earpiece, electrode, electrodes
• p. 3: Smarting, cEEGrid, electrode, electrodes, sampling rate

electrode_layout

• p. 1: around the ear, concha
• p. 2: Figure 1, c-shape, concha
• p. 3: around the ear, c-shape, concha, ear canal, layout, left ear, right ear

experiment

• p. 1: P300, attention, participants, stimuli
• p. 2: P300, attention, participants, speaker, stimuli, subjects, task
• p. 3: subjects

signal_processing

• p. 1: ICA
• p. 2: ERP, ICA
• p. 3: ICA
• p. 4: ICA, bandpass, filter
• p. 5: ERP, ICA, artifact, epoch, filter

results

• p. 1: feasibility, results, showed, significant
• p. 2: compared, feasibility
• p. 4: compared, performance, results
• p. 5: compared, results
• p. 6: results

limitations

• p. 2: noise
• p. 3: contact
• p. 4: noise
• p. 5: artifact, noise
• p. 6: artifact, noise
• p. 7: noise
• p. 8: noise
• p. 9: noise

16. Mikkelsen et al., 2019 (2019)

• Title: Machine-learning-derived sleep-wake staging from around-the-ear electroencephalogram outperforms manual scoring and actigraphy
• Route: around-the-ear EEG
• PDF: library/pdfs_by_category/04_sleep_hearing_real_world/16_2019_mikkelsen_et_al_machine_learning_derived_sleep_wake_staging_from_around_the_ear_electroencephalo.pdf
• Text: library/texts/04_sleep_hearing_real_world/16_2019_mikkelsen_et_al_machine_learning_derived_sleep_wake_staging_from_around_the_ear_electroencephalo.txt

hardware

• p. 1: amplifier, cEEGrid, electrode, electrodes
• p. 2: cEEGrid, electrode, electrodes
• p. 3: Smarting, amplifier, cEEGrid, electrode, electrodes

electrode_layout

• p. 1: around the ear
• p. 2: Figure 1, around the ear
• p. 3: mastoid
• p. 6: right ear
• p. 7: right ear
• p. 11: around the ear
• p. 12: mastoid

experiment

• p. 1: polysomnography, sleep, visual, volunteers
• p. 2: participants, polysomnography, sleep, task, visual
• p. 3: participants, polysomnography, sleep

signal_processing

• p. 1: ICA, accuracy, classifier
• p. 2: ICA, artefact, classifier
• p. 3: ICA, alpha, artifact, epoch, filter, notch

results

• p. 1: accuracy, compared, demonstrate, performance, results
• p. 2: compared, confirmed, demonstrate, performance, results, showed, significant

limitations

• p. 2: artefact
• p. 3: ECG, EMG, EOG, artifact, impedance, movement
• p. 4: EMG, EOG, artefact, movement
• p. 5: EMG

17. Reali et al., 2021 (2021)

• Title: Open-source concealed EEG data collection for Brain-Computer Interfaces: Real-world neural observation through OpenBCI amplifiers with around-the-ear cEEGrid electrodes
• Route: OpenBCI + cEEGrid
• PDF: library/pdfs_by_category/04_sleep_hearing_real_world/17_2021_reali_et_al_open_source_concealed_eeg_data_collection_for_brain_computer_interfaces_real_wor.pdf
• Text: library/texts/04_sleep_hearing_real_world/17_2021_reali_et_al_open_source_concealed_eeg_data_collection_for_brain_computer_interfaces_real_wor.txt

hardware

• p. 1: OpenBCI, amplifier, cEEGrid, electrode, electrodes
• p. 2: OpenBCI, amplifier, cEEGrid, electrode, electrodes
• p. 3: cEEGrid, electrode

electrode_layout

• p. 1: temporal
• p. 2: Figure 1, around the ear, c-shape, temporal
• p. 3: Figure 1, around the ear, temporal
• p. 4: Figure 1
• p. 5: around the ear, c-shape, ear canal

experiment

• p. 1: task, visual
• p. 2: attention, sleep, visual
• p. 3: task, visual
• p. 4: attention, sleep, visual
• p. 5: sleep, visual

signal_processing

• p. 1: ICA, alpha
• p. 2: ICA
• p. 3: ICA, alpha
• p. 4: ICA
• p. 5: ICA, alpha, artefact
• p. 6: ICA
• p. 7: ICA, artefact

results

• p. 1: demonstrate, feasibility
• p. 2: demonstrate
• p. 3: compared, demonstrate, feasibility, results
• p. 4: compared, confirmed, demonstrate, feasibility
• p. 5: demonstrate

limitations

• p. 1: comfort
• p. 2: comfort, contact, hair, limitation, limitations
• p. 3: ECG, motion
• p. 4: comfort, limitation, limitations
• p. 5: limitation

18. Knierim et al., 2022 (2022)

• Title: A simplified design of a cEEGrid ear-electrode adapter for the OpenBCI biosensing platform
• Route: OpenBCI + cEEGrid adapter
• PDF: library/pdfs_by_category/05_open_hardware_benchmarking/18_2022_knierim_et_al_a_simplified_design_of_a_ceegrid_ear_electrode_adapter_for_the_openbci_biosensin.pdf
• Text: library/texts/05_open_hardware_benchmarking/18_2022_knierim_et_al_a_simplified_design_of_a_ceegrid_ear_electrode_adapter_for_the_openbci_biosensin.txt

hardware

• p. 1: Cyton, Daisy, OpenBCI, Smarting, amplifier, cEEGrid, electrode, electrodes
• p. 2: amplifier, cEEGrid, electrode, electrodes

electrode_layout

• p. 2: around the ear
• p. 3: Fig. 1
• p. 4: Fig. 1
• p. 5: Fig. 1, layout
• p. 6: left ear, right ear
• p. 7: around the ear
• p. 9: right ear
• p. 10: Fig. 1

experiment

• p. 2: attention, resting, sleep, speaker
• p. 3: participants
• p. 8: visual
• p. 10: resting
• p. 11: sleep, visual
• p. 13: P300, attention, visual

signal_processing

• p. 1: ICA, alpha, artefact, filter
• p. 2: ICA, classifier
• p. 3: ICA, artefact
• p. 4: ICA
• p. 7: ERP, ICA
• p. 8: filter

results

• p. 2: demonstrate, results
• p. 3: compared
• p. 7: significant
• p. 10: demonstrate, performance, significant
• p. 11: compared, demonstrate, performance
• p. 13: correlation, results

limitations

• p. 1: artefact
• p. 2: EMG, comfort, motion
• p. 3: artefact, contact, noise
• p. 5: contact
• p. 7: comfort, hair, impedance, noise

19. Holtze et al., 2022 (2022)

• Title: Ear-EEG Measures of Auditory Attention to Continuous Speech
• Route: ear-EEG / cEEGrid
• PDF: library/pdfs_by_category/05_open_hardware_benchmarking/19_2022_holtze_et_al_ear_eeg_measures_of_auditory_attention_to_continuous_speech.pdf
• Text: library/texts/05_open_hardware_benchmarking/19_2022_holtze_et_al_ear_eeg_measures_of_auditory_attention_to_continuous_speech.txt

hardware

• p. 1: cEEGrid
• p. 2: cEEGrid, electrode, electrodes, ground
• p. 3: cEEGrid, electrode, electrodes, ground, reference
• p. 4: electrode, electrodes

electrode_layout

• p. 2: Figure 1, around the ear, c-shape, ear canal, temporal
• p. 3: Figure 1, layout, left ear, mastoid, right ear
• p. 4: around the ear, mastoid

experiment

• p. 1: attention, participants, speaker, speech, stimuli
• p. 2: ASSR, attention, participants, speaker, speech, stimuli
• p. 3: participants

signal_processing

• p. 1: ICA, accuracy, artifact, correlation
• p. 2: ICA, correlation
• p. 3: ICA, accuracy, artifact, re-referenced
• p. 4: filter, filtered

results

• p. 1: accuracy, confirmed, correlation, results
• p. 2: compared, correlation, feasibility, showed
• p. 3: accuracy
• p. 4: accuracy, results
• p. 5: results

limitations

• p. 1: artifact
• p. 2: noise
• p. 3: artifact, comfort
• p. 4: artifact, impedance
• p. 5: artifact, movement
• p. 6: artifact, noise
• p. 7: artifact
• p. 8: artifact

20. Knierim et al., 2023 (2023)

• Title: A Systematic Comparison of High-End and Low-Cost EEG Amplifiers for Concealed, Around-the-Ear EEG Recordings
• Route: around-the-ear cEEGrid
• PDF: library/pdfs_by_category/05_open_hardware_benchmarking/20_2023_knierim_et_al_a_systematic_comparison_of_high_end_and_low_cost_eeg_amplifiers_for_concealed_ar.pdf
• Text: library/texts/05_open_hardware_benchmarking/20_2023_knierim_et_al_a_systematic_comparison_of_high_end_and_low_cost_eeg_amplifiers_for_concealed_ar.txt

hardware

• p. 1: Cyton, Daisy, OpenBCI, Smarting, amplifier, cEEGrid, electrode, electrodes
• p. 2: amplifier, cEEGrid, electrode, electrodes

electrode_layout

• p. 1: around the ear
• p. 2: Figure 1, around the ear, c-shape, temporal
• p. 3: Figure 1, around the ear, right ear, temporal
• p. 4: temporal
• p. 5: temporal
• p. 7: temporal

experiment

• p. 1: attention, sleep
• p. 2: participants, subjects, task
• p. 4: stimuli
• p. 5: participants, stimuli
• p. 9: P300, stimuli
• p. 10: participants, resting

signal_processing

• p. 1: ERP, ICA
• p. 2: ERP, ICA, accuracy, alpha
• p. 3: ICA, artefact
• p. 4: ICA
• p. 5: ERP, ICA
• p. 6: ICA

results

• p. 1: compared, performance, results, significant
• p. 2: accuracy, compared, performance, significant
• p. 3: compared
• p. 7: accuracy, performance, showed

limitations

• p. 1: hair, limitation, limitations, noise
• p. 2: limitation, noise
• p. 3: artefact, comfort, limitation, limitations, movement, noise

21. Van Den Broucke et al., 2023 (2023)

• Title: Wireless and wearable auditory EEG acquisition hardware using around-the-ear cEEGrid electrodes
• Route: wireless around-the-ear cEEGrid
• PDF: library/pdfs_by_category/05_open_hardware_benchmarking/21_2023_van_den_broucke_et_al_wireless_and_wearable_auditory_eeg_acquisition_hardware_using_around_the_ear_cee.pdf
• Text: library/texts/05_open_hardware_benchmarking/21_2023_van_den_broucke_et_al_wireless_and_wearable_auditory_eeg_acquisition_hardware_using_around_the_ear_cee.txt

hardware

• p. 1: BioSemi, amplifier, cEEGrid, electrode, electrodes, sampling rate, wireless
• p. 2: amplifier, cEEGrid, electrode, ground, sampling rate

electrode_layout

• p. 1: Fig. 1, temporal
• p. 2: Fig. 1, around the ear
• p. 3: right ear
• p. 4: Figure 1, around the ear

experiment

• p. 1: speech
• p. 4: speech

signal_processing

• p. 1: ICA, baseline, filter
• p. 2: ICA, filter
• p. 3: ICA, accuracy, artefact, epoch, filter
• p. 4: filter, filtered

results

• p. 1: compared, performance, significant
• p. 2: compared, performance
• p. 3: accuracy, confirmed, performance
• p. 4: accuracy, compared, showed

limitations

• p. 1: limitation, limitations, noise
• p. 2: noise
• p. 3: artefact, hair, noise
• p. 4: future work, movement, noise

22. Zhu et al., 2024 (2024)

• Title: Using Ear-EEG to Decode Auditory Attention in Multiple-speaker Environment
• Route: ear-EEG
• PDF: library/pdfs_by_category/06_recent_preprints_comparisons/22_2024_zhu_et_al_using_ear_eeg_to_decode_auditory_attention_in_multiple_speaker_environment.pdf
• Text: library/texts/06_recent_preprints_comparisons/22_2024_zhu_et_al_using_ear_eeg_to_decode_auditory_attention_in_multiple_speaker_environment.txt

hardware

• p. 1: cEEGrid, electrode, electrodes
• p. 2: amplifier, cEEGrid, electrode, electrodes, ground, reference, sampled at, sampling rate
• p. 3: electrode

electrode_layout

• p. 1: c-shape, ear canal, temporal
• p. 2: Fig. 1, around the ear, c-shape, right ear, temporal
• p. 3: layout, temporal
• p. 4: layout, temporal

experiment

• p. 1: attention, participants, speaker, speech, task
• p. 2: attention, participants, speaker, speech, stimuli, subjects, visual

signal_processing

• p. 1: ICA, TRF, accuracy, artifact
• p. 2: ICA, TRF, accuracy, band-pass, baseline, filter, filtered, re-referenced

results

• p. 1: accuracy, compared, confirmed, demonstrate, feasibility, performance, results, showed
• p. 2: accuracy, correlation, feasibility

limitations

• p. 1: artifact, motion
• p. 2: comfort, hair
• p. 3: noise
• p. 4: future work, limitation, limitations

23. Geirnaert et al., 2025 (2025)

• Title: A Direct Comparison of Simultaneously Recorded Scalp, Around-Ear, and In-Ear EEG for Neural Selective Auditory Attention Decoding to Speech
• Route: scalp / around-ear / in-ear EEG
• PDF: library/pdfs_by_category/06_recent_preprints_comparisons/23_2025_geirnaert_et_al_a_direct_comparison_of_simultaneously_recorded_scalp_around_ear_and_in_ear_eeg_f.pdf
• Text: library/texts/06_recent_preprints_comparisons/23_2025_geirnaert_et_al_a_direct_comparison_of_simultaneously_recorded_scalp_around_ear_and_in_ear_eeg_f.txt

hardware

• p. 1: cEEGrid, earpiece, electrode, electrodes, reference
• p. 2: amplifier, cEEGrid, earpiece, electrode, electrodes, reference, wireless

electrode_layout

• p. 1: temporal
• p. 2: temporal
• p. 3: Figure 1
• p. 4: 10-20, around the ear, c-shape, concha, ear canal, left ear, right ear
• p. 5: c-shape, right ear

experiment

• p. 1: Simon, attention, speaker, speech
• p. 2: attention, participants, resting, sleep, speaker
• p. 3: attention, participants, speaker

signal_processing

• p. 1: ICA, accuracy
• p. 2: ERP, ICA, accuracy, artifact
• p. 3: ERP, ICA, correlation
• p. 4: ICA
• p. 6: filter, filtered

results

• p. 1: accuracy, performance, results, significant
• p. 2: accuracy, compared, demonstrate, performance, results, significant
• p. 3: correlation, performance

limitations

• p. 1: comfort, limitation, noise
• p. 2: artifact, comfort, noise
• p. 4: EOG, hair
• p. 5: EOG
• p. 6: comfort, contact
• p. 7: noise