Reference channel location

hackrhackr Maryland, USA
in Electrodes
So, I've finally got everything working with my online OpenBCI-LSL-OpenViBE online classification. Now I need to get it working well, because the classification accuracy is terrible.

The examples I was following used a reference channel whereas I didn't, so I'm going to try adding that as a first step. My little 10/20 Brainnet cap has location just behind the top of the head labeled "REF". Is that where I should put the reference channel? Maybe I don't understand the logic, but I thought it should go on some place with 0 activity, like an elbow or something.


Comments

  • PaskiPaski
    Reference are usually placed behind the ear (Mastoid) or at the earlobe. 
  • hackrhackr Maryland, USA
    @Paski Oh, yes, yes now that you mention it I have seen those alligator ear clips on some of the EEG toys. Thanks!

    Incidentally, do you know how to find the reference channel name in OpenViBE by any chance?
  • PaskiPaski
    Hi, 
    This is a bit tricky. Now i don't remember exactly, but you're able to import more than 4 channels. Just import to Open vibe e.g 10 channels  and then you can see the complete data flow. Some channels will be without any data, but you should be able to identify all correct channels which corresponds to the EEG. 
  • hackrhackr Maryland, USA
    @Paski Thank you again
  • jonzimmermanjonzimmerman london
    edited September 2017
    Thank for information about connections. Here, it is really hard to fix slots in Little Britain without good knowledges
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