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Novel Electrodes for Reliable EEG Recordings on Coarse and Curly Hair
- PMID: 33019375
- DOI: 10.1109/EMBC44109.2020.9176067
Novel Electrodes for Reliable EEG Recordings on Coarse and Curly Hair
- PMID: 33019375
- DOI: 10.1109/EMBC44109.2020.9176067
Abstract
EEG is a powerful and affordable brain sensing and imaging tool used extensively for the diagnosis of neurological disorders (e.g. epilepsy), brain computer interfacing, and basic neuroscience. Unfortunately, most EEG electrodes and systems are not designed to accommodate coarse and curly hair common in individuals of African descent. In neuroscience studies, this can lead to poor quality data that might be discarded in scientific studies after recording from a broader population set. In clinical diagnoses, it may lead to an uncomfortable and/or emotionally taxing experience, and, in the worst cases, misdiagnosis. Our prior work demonstrated that braiding hair in cornrows to expose the scalp at target locations leads to reduced electrode-skin impedance for existing electrodes. In this work, we design and implement novel electrodes that harness braided hair, and demonstrate that, across time, our electrodes, in conjunction with braiding, lower the impedance further, attaining 10x lower impedance than existing systems.
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