[Eeglablist] CleanLine plugin not removing 60hz noise?

[Delorme, Arnaud]

Dear Charisse,

Note that we are actively working on this problem to update the cleanline plugin. In the meantime, you can try Makoto’s solution and see if that works for you.

Best wishes,

Arno

> On Jul 17, 2020, at 1:26 PM, Makoto Miyakoshi <mmiyakoshi at ucsd.edu> wrote:
> 
> Dear Charisse,
> 
> The current CleanLine plugins does not do the job due to a bug. See below
> for validation and solution.
> https://sccn.ucsd.edu/wiki/Makoto's_preprocessing_pipeline#Validation_.2804.2F25.2F2020_added.29
> 
> https://sccn.ucsd.edu/wiki/Makoto's_useful_EEGLAB_code#Example_of_batch_code_to_preprocess_multiple_subjects_.2804.2F25.2F2020_updated.29
> 
> In short, use cleanLineNoise() included in Prep Pipeline.
> 
> Makoto
> 
> On Tue, Jul 14, 2020 at 2:40 AM Charisse Pickron <cpickron at umn.edu> wrote:
> 
>> Hi All,
>> I've been doing a bit of reading about using the CleanLine plugin, the
>> benefits of this over say bandpass and notch filter. However I'm finding
>> that my data does not seem to be "cleaned" after running this plugin.
>> *EEGLab version: v2019.1
>> *Data: Collected on 128 EGI Hydrocel net
>> *Data is continuous, .1hz highpass filter, large sections of bad data have
>> been rejected, and it has been re-referenced to the Average Referenced
>> PRIOR to submitting it to CleanLine.
>>                *I plan to run ICA later in the pipeline and because I
>> don't have quite enough data to epoch before ICA (based on EEGLab
>> suggestions) until after ICA, which is why CleanLine is run on continuous
>> data. However open to other input.
>> 
>> Looking at the spectral map (Plots >  Channel spectra map) I see a large
>> 60hz spike and with closer inspection the window is about 58:62hz.
>> I've tried to be diligent following different past EEGLab threads about
>> CleanLine and see that CleaLine doesn't work for some data based on the
>> type of LineNoise. I've followed some of the Tips found in the readme
>> documents of CleanLine, but not seeing a clear difference. My tentative
>> plan is to notch filter 58:62Hz.
>> 
>> *Below is some text that comes with the output as CleanLine is running, not
>> sure if this is informative for anyone to help understand why CleanLine
>> doesn't seem to be working:
>> Cleaning Chan 1...
>> Computing spectral power...
>> Average noise reduction: 60.06 Hz: 10.75 dB
>> Cleaning Chan 2...
>> Computing spectral power...
>> Average noise reduction: 60.06 Hz: 10.59 dB
>> ...
>> Cleaning Chan 12...
>> Computing spectral power...
>> Average noise reduction: 60.06 Hz: 10.68 dB
>> 
>> Many Thanks!
>> -Charisse
>> --
>> Charisse B. Pickron, Ph.D.
>> President's Postdoctoral Fellow | Institute of Child Development |
>> icd.umn.edu
>> University of Minnesota | umn.edu
>> Pronouns: She/Her/Hers
>> cpickron at umn.edu
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