[Eeglablist] Regarding Pre-processing pipeline

Wed Jul 5 03:56:09 PDT 2017

Dear Makoto and EEGLABlist users,

I am in a deep confusion in preprocessing of my EEG/ERP data focussed on
N400/P600 component. Kindly clarify my following issues:

As suggested in your pipeline,  at what stage of processing I need to apply
ICA weight matrix and sphereing matrix with 1-Hz high-passed data to 0.1-Hz
high-passed data. Actually, I want the data to be filtered with 0.1-30Hz
followed by removing bad channels using PREP pipeline. On the other hand
PREP pipeline suggest the data should be filtered with 1Hz High-pass.

In such case, kindly
suggest me preprocessing pipeline.

Regards,
Narendra Kumar

On Tue, Jul 4, 2017 at 9:47 AM, Narendra Kumar <narendra.linguistics at gmail.
com> wrote:

> Dear Makoto,
>
> I have just realised one blunder done by me. I promised you that I won't
> disclose your message to anyone else but by mistake I cc'ed it to eeglab
> forum. I am extremely sorry for this.
>
> Thanks and regards,
>
> Narendra Kumar
>
> On Tue, Jul 4, 2017 at 8:26 AM, Narendra Kumar <
> narendra.linguistics at gmail.com> wrote:
>
>> Dear Makoto,
>>
>> Thanks a lot for your response.
>>
>> Regards,
>> Narendra
>>
>> On Tue, Jul 4, 2017 at 7:01 AM, Makoto Miyakoshi <mmiyakoshi at ucsd.edu>
>> wrote:
>>
>>> Dear Kumar,
>>>
>>> > But I want  a to know one thing if I use your preprocessing pipeline,
>>>  I can I cite the webpage ?
>>>
>>> I don't think citing a website is valid in scientific communication.
>>> Check the journal's policy.
>>>
>>> > Further, following your preprocessing pipeline, when I run *Tool >
>>> Interpolate electrodes, *it gives the following warning message,
>>>
>>>
>>> Warning: do not interpolate channels before running ICA
>>>
>>>
>>> Is it okay to proceed further ignoring this message ?
>>>
>>> ICA can 'usually' tell the right rank of the data, so I would say it's
>>> ok. If you have a concern, use 'pca', 16 if your number of channels BEFORE
>>> INTERPOLATION is 16 to explicitly tell ICA to use rank of 16.
>>>
>>> Makoto
>>>
>>> On Mon, Jul 3, 2017 at 6:26 PM, Narendra Kumar <
>>> narendra.linguistics at gmail.com> wrote:
>>>
>>>> Dear Makoto,
>>>>
>>>> Thanks for the reply. I won't disclose it anywhere. But I want  a to
>>>> know one thing if I use your preprocessing pipeline,  I can I cite the
>>>> webpage ?
>>>>
>>>> Further, following your preprocessing pipeline, when I run *Tool >
>>>> Interpolate electrodes, *it gives the following warning message,
>>>>
>>>>
>>>> Warning: do not interpolate channels before running ICA
>>>>
>>>>
>>>> Is it okay to proceed further ignoring this message ?
>>>>
>>>> Kindly reply.
>>>>
>>>> Thanks,
>>>> Narendra
>>>>
>>>>
>>>> On Mon, Jul 3, 2017 at 12:12 PM, narendra karna <
>>>> narendra.kumar at iitrpr.ac.in> wrote:
>>>>
>>>>> Dear Makoto,
>>>>>
>>>>> I am a basic level learner of EEGLAB toolbox. I can only do GUI based
>>>>> steps. In your preprocessing pipeline, you mentioned
>>>>>
>>>>> There are reports that 1-Hz high-pass filter attenuates (or even
>>>>> 'distorts') low-frequency, so-called 'late slow waves' of event-related
>>>>> potential family, such as N400 or P600 (these names are paradigm dependent,
>>>>> of course). To avoid this problem, one can calculate ICA weight matrix and
>>>>> sphereing matrix with 1-Hz high-passed data, then apply it to 0.1-Hz
>>>>> high-passed data. This ICA matrices transfer can be done through EEGLAB GUI
>>>>> 'Edit' -> 'Dataset info'.
>>>>>
>>>>> Here, can you explain how to perform this step wise (in a pipeline
>>>>> way) ? I'll be thankful to you for this.
>>>>>
>>>>> Thanks !
>>>>>
>>>>> Regards,
>>>>> Narendra
>>>>> Research Scholar
>>>>> Department of Humanities and Social Sciences
>>>>> Indian Institute of Technology Ropar
>>>>> Punjab, India - 140001
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>>
>>>> Research Scholar
>>>> Department of Humanities and Social Sciences
>>>> Indian Institute of Technology Ropar
>>>> Punjab, India - 140001
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>> --
>>> Makoto Miyakoshi
>>> Swartz Center for Computational Neuroscience
>>> Institute for Neural Computation, University of California San Diego
>>>
>>
>>
>>
>> --
>>
>> Research Scholar
>> Department of Humanities and Social Sciences
>> Indian Institute of Technology Ropar
>> Punjab, India - 140001
>>
>>
>>
>
>
> --
>
> Research Scholar
> Department of Humanities and Social Sciences
> Indian Institute of Technology Ropar
> Punjab, India - 140001
> Contact No.:- +91-8968945650
> Homepage:- *https://www.sites.google.com/site/narendraiitrpr
> <https://www.sites.google.com/site/narendraiitrpr/>/*
> Social Networking Sites: - Facebook
> <https://www.facebook.com/narendra.karna.7>; Researchgate
> <https://www.researchgate.net/profile/Narendra_Kumar22/>
>
>
>
>

-- 

Research Scholar
Department of Humanities and Social Sciences
Indian Institute of Technology Ropar
Punjab, India - 140001
Contact No.:- +91-8968945650
Homepage:- *https://www.sites.google.com/site/narendraiitrpr
<https://www.sites.google.com/site/narendraiitrpr/>/*
Social Networking Sites: - Facebook
<https://www.facebook.com/narendra.karna.7>; Researchgate
<https://www.researchgate.net/profile/Narendra_Kumar22/>
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