[Eeglablist] Blinking noise reject on prefrontal electrodes

[Cedric Cannard]

Hi,

I responded to this but not to the list, sorry.

I have used ASR on a 4-channel system, it worked pretty well.
Do you have some clean sections of data without eye blinks in the data?
You could try the EEGLAB clean_rawdata plugin.
1) install the plugin through the GUI
2) Load your data
3) Get the appropriate channel locations if you know which ones in Edit > channel locations. If not, I could be wrong but I believe you can run ASR without them and it will adapt the thresholds accordingly.
4) Tools > Reject data using Clean Rawdata and ASR
5) Check "Remove channel drift" (keep the same values)
6) Uncheck "Remove bad channels" as it won't work with only 2 channels
7) Keep the rest checked and play with the thresholds to find what is suited to your data.

I hope this helps,

Cedric


--
Cédric Cannard, MSc, PhD candidate in Neuroscience
Université Toulouse III, CerCo Lab, CNRS, France
ccannard at protonmail.com

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Friday, May 1, 2020 4:36 PM, Meha Fatima <mehafatima1 at gmail.com> wrote:

> Looking forward to an answer for the same.
>
> On Fri, 1 May 2020 at 16:47, Brigitte Aguilar Gonzales <
> aguilarbrigitte277 at gmail.com> wrote:
>
> > Hi all,
> > I'm working on characterizing the EEG signal during tasks that involve
> > attention. For this I've recorded EEG signals from prefrontal electrodes
> > (Fp1 and Fp2), however the blinking noise is an important problem that I
> > have not yet been able to solve, since I found that running ICA for this
> > particular setup is not recommended, due to the small number of channels. I
> > wanted to know if there is someone who is working with similar signals and
> > who can guide me since I do not have enough experience working with only
> > two electrodes. My goal is to be able to eliminate blinking noise online
> > since I need this in the implementation of a BCI for cognitive
> > rehabilitation.
> > Thank you very much in advance for your attention and help.
> > Brigitte Aguilar
> > LIRINS, (Rehabilitation Engineering and Neuro-Sensorial Investigation
> > Laboratory) Engineering School of the Universidad Nacional de Entre Ríos
> >
> > Eeglablist page: http://sccn.ucsd.edu/eeglab/eeglabmail.html
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>
> --
>
> -   Dr. Meha Fatima BSMT, Ph.D.*
>     Assistant Professor
>     Dow Institute of Medical Technology
>     Dow University of Health Sciences
>     mehafatima1 at gmail.com
>
>     mehafatima1 at gmail.com.
>
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