Bristle-sensors - Low-cost flexible passive dry EEG electrodes for neurofeedback and BCI applications

Cristian Grozea, Catalin D. Voinescu, Siamac Fazli

Research output: Contribution to journalArticlepeer-review

166 Citations (Scopus)


In this paper, we present a new, low-cost dry electrode for EEG that is made of flexible metal-coated polymer bristles. We examine various standard EEG paradigms, such as capturing occipital alpha rhythms, testing for event-related potentials in an auditory oddball paradigm and performing a sensory motor rhythm-based event-related (de-) synchronization paradigm to validate the performance of the novel electrodes in terms of signal quality. Our findings suggest that the dry electrodes that we developed result in high-quality EEG recordings and are thus suitable for a wide range of EEG studies and BCI applications. Furthermore, due to the flexibility of the novel electrodes, greater comfort is achieved in some subjects, this being essential for long-term use.

Original languageEnglish
Article number025008
JournalJournal of Neural Engineering
Issue number2
Publication statusPublished - Apr 1 2011
Externally publishedYes

ASJC Scopus subject areas

  • Biomedical Engineering
  • Cellular and Molecular Neuroscience


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