Can tDCS voltage damage a Cyton board?
PMK89
Clausthal, Germany
Hello everyone,
can a cyton board be damaged by tDCS voltage (<12V)? When I read some of the posts here and about the tDCS shield plans I think not but I would be happy about some experts confirmation that I don't fry my board.
Best wishes
Patrick
Comments
Patrick, hi.
Keep any voltage on the channel inputs to less than 5V. See recommendations on these threads.
https://www.google.com/search?as_q=cyton+maximum+voltage&as_sitesearch=openbci.com
re: tDCS shield plans. Those were abandoned long ago, the only shield produced was the Wifi Shield. Which is currently on hold for some minor engineering changes.
Any tDCS applied voltages / currents, could potentially SWAMP the microvolt level sensitivity of most EEG amplifiers. But see some of the papers showing up on this search.
https://www.google.com/search?q=simultaneous+tDCS+and+EEG
https://www.researchgate.net/publication/305851037_Automatic_artifact_suppression_in_simultaneous_tDCS-EEG_using_adaptive_filtering
On looking over some of the search results and the paper above, it looks like simultaneous EEG + tDCS is being done. Some artifact removal may be needed. And careful separation of the active tDCS pads and EEG electrodes.
William