Noise in channel 1, with no electrodes connected

shengjiashengjia
edited October 2018 in Cyton
Hi, I connect the SRB and BIAS to my right and left earlobe, channel 1~16 didn't connect to any Dupoint line, and it should be rail I think. 

However there exists noise signal from ch1, I don't know how to deal with this  

Comments

  • wjcroftwjcroft Mount Shasta, CA
    What is a "Dupoint line"??

    Electrodes must be connected if you expect to get a valid signal. Without electrode, the channel can have ANY behavior. Did you follow the tutorial steps? Do you get the predicted output?


    Regards,

    William

  • shengjiashengjia
    Thanks for your reply and sorry for my late reply
    I mean "Dupont wire"
    Yes, I have followed the tutorial steps.
    But I expected that when I connect the BIAS and SRB to my earlobe and let ch1~16 connect to nothing, signal from each channel should be rail, just like the channel 2~16 in the second picture I post, however ch1 had a signal I didn't know where it  came from, it appears randomly.

    I just want to make sure what happened, if this state is one of "ANY behavior", maybe I can ignore it
  • wjcroftwjcroft Mount Shasta, CA
    Electrodes must be connected if you expect to get a valid signal. 

    Did you see EEG, ECG, EMG signals as expected in the tutorial? If yes, then your system is working fine.
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