[Eeglablist] Inconsistent results using clean_artifacts

[John Johnson]

Hello Yarden,

ASR's processing depends on the amount of available memory on the 
computer it is running on.
To obtain more consistent results, you can specify the amount of memory 
it should use.
More here:
https://sccn.ucsd.edu/wiki/Artifact_Subspace_Reconstruction_(ASR)#The_option_.27availableRAM_GB.27_is_available_to_fix_the_length_of_final_output.

Regards,
John


On 6 Apr 2020, at 7:37, Yarden Ben Horin wrote:

> Hi all,
>
> My colleagues and I ran into a very strange problem while using eeglab
> plugin clean_rawData.
> We tried to use the clean_artifacts function to clean our data, but we 
> got
> inconsistent result at each run. By inconsistent, the meaning is that
> different numbers of channels were removed from the data.
>
> The code:
> EEG_clean = clean_artifacts(EEG,
> 'FlatlineCriterion',5,'ChannelCriterion',0.8,'LineNoiseCriterion',4,'Highpass','off','BurstCriterion',20,'WindowCriterion','off','BurstRejection','off','Distance','Euclidian');
>
> We merely used EEG = pop_eegfiltnew(EEG, 'locutoff',4,'plotfreqz',0);
> before running clean_artifacts. We ran the code on several computers 
> (all
> with the latest versions  of eeglab and clean_rawData), and each run 
> on the
> same dataset produced different result (even on the same computer.)
>
> Does clean_artifacts, or one of its sub functions, not
> deterministic function?
>
> Hopefully you could help us with this frustrating situation.
> Many thanks,
> Yarden Ben Horin.
>
>
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