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Low-cost open-source active electrode to measure EEG

• brookst 2y ago
  I’m super interested in BCI in general, but not convinced hobbyist (< $1000) equipment is useful enough to be worth the investment at this point. Once a year or so I check in on Emotiv and OpenBCI and Neurosky and others, and so far nothing seems to hit the affordable + casually hackable spot that will make me pull the trigger. So yeah I’m interested, but primarily in a turnkey solution from hardware to software libraries.
  • llm_trw 2y ago
    Cheap, easy, good. Pick two.
    • brookst 2y ago
      All three are subjective. I find ice cream to be cheap, easy, and good. Also raspberry Pi boxes. And paying $10 to stream a great movie. But hey, tell me i can get something amazing for $1500 and I’m in. Tell me its $100k and I’m out.
• deleted 2y ago
  [deleted]
• amelius 2y ago
  Was anybody able to find the circuit schematics of this open-source design?
• TheJoeMan 2y ago
  One suggestion for innovation above and beyond current expensive equipment would be to make a dual-electrode sensor with the noise cancellation built-in. I worked in a research lab that pioneered this [1], essentially when you are wearing EEG you typically have to hold your head very still due to motion artifacts. So to permit gait/prosthetic studies, they came up with gluing electrodes back to back so that the outer one just faces upwards and collects the noise. However, this doubles the equipment costs, as well as requires MATLAB post-processing for noise removal. So an all-in-one unit would be very interesting to see. [1] https://pubmed.ncbi.nlm.nih.gov/30074489/ https://pubmed.ncbi.nlm.nih.gov/30074489/