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The basic idea of the older EEG setups is you have a net of 128 or 256 electrodes on your head, and then the program signal processes all of the waves from them
by TechBro8615 5y ago
The basic idea of the older EEG setups is you have a net of 128 or 256 electrodes on your head, and then the program signal processes all of the waves from them. Problem is your skull makes the waves bounce around, adding a lot of noise and making it hard to parse much signal from the data.
Neuralink uses an implant, inside your skull, so that this noise isn’t a problem.
- disabled 5y agoNot true: You ideally still need as many electrodes as feasibly possible for a more complete BCI interface, implanted or not, regardless of the resolution (constant bitrate) of the electrodes. It is true though that certain implanted electrodes have higher resolution than transitional EEG caps. But at this point, it is not that big of a deal because neurosurgeons can only implant a very limited amount of electrodes. Even if they could implant 256 electrodes, the processing of this would be extremely limited. Even a standard 19 channel EEG cap can require a top-of-the-line computer (think i9 processor, 64 GB RAM, or better) for some use cases, due to latency issues involved especially with the amount of signals being used. Also: With EEG caps, we have filters that remove the noise from movement and muscle activity very well.