To clarify on the impedance, Cyton WITHOUT Thinkpulse uses a current injection method to measure skin impedance. This cannot work through an active electrode. The impedance widget displayed impedances

Impedance: since impedance results may not be reliable, what’s the best way to verify

re: impedance. See this comment at link below by Julien, the Thinkpulse developer.

contact” case, the Open BCI GUI is showing low impedance, which is confusing to me. Because in the Open BCI documentation, it says otherwise. Attached the ss.

Despite correct placement and consistently excellent impedance values (typically 4–10 kΩ across channels), the EEG signal is almost always flagged as “Near Railed” or “Railed,” with rail percentages f

During impedance testing, the impedance values of certain leads remain around 3 or 4kΩ.

During impedance testing, the impedance values of certain leads remain around 3 or 4kΩ. Whether we try to wipe the scalp with an alcohol swab, add conductive paste and put on a net cap to ensure a fit

print(f"Impedance Command reply: {command_reply}") if command_reply is not None: time.sleep(1) self.board.st

https://eeghacker.blogspot.com/2014/04/openbci-measuring-electrode-impedance.html

If someone can help find the right path to find the posts with the images on the old openbci community pages. For eg: https://openbci.com/community/openbci-measuring-electrode-impedance/

Please look through some of these search results, relating to user app impedance measurements:

https://docs.openbci.com/Cyton/CytonSDK/#leadoff-impedance-commands

I'm currently trying to measure the impedance of my Cyton board channels in Python using Brainflow. However, I consistently get this error:

We are essentially looking for a "sanity check." Do the raw data values in our table seem plausible for a typical Ganglion recording (especially from frontal channels prone to EMG/EOG artifa

Can you please try one of the tutorial tests, such as SRB2 on one ear lobe, Bias/Ground on the other, and O1 or O2 or Pz for measuring alpha. Then try the eyes closed alpha test. The impedance shown i

Other ear clips you would want to avoid are the type used in TENS stimulation. These use rubber tips, but questionable impedance / resistance.

The Earclip Electrode I bought from you last time is broken again. I want to ask, I have found many medical ear clip electrodes on the Internet, can they replace the Earclip Electrode? Can you recomme

* Impedance Check: I am concerned about the quality of my electrode contact. I have taken screenshots of the impedance values both with the electrodes on my head and without them connected. These are

AC is ALWAYS used to measure EEG impedance. Have said this multiple time now. All that matters is the RELATIVE voltage differential. Not absolute voltages. What is your goal with Ganglion, have you be

No, no DC offset. DMM will not work for EEG impedance. There are special meters for practitioners with older amps.