[Eeglablist] Artefact rejection using ADJUST

[Tarik S Bel-Bahar]

Some quick thoughts below, Katherine, good luck with your process (and
processing).

There are costs and benefits to using any method.
Do not complicate things, keep things simple so you can learn effectively
and build up our personal ERP/EEG expertise.

If you have not, read books such as Luck's or Handy's ERP handbooks (both
pre-2010)
If you have not, take a look through a hardcopy EEG atlas.
If you have not, read 20 to 50 ERP and EEG articles in your area of choice.
[From these you will learn what your basic patterns should look like]
Then move forward with your "first study". In fact, I would say do not even
collect data till you have done each of the above.

If this is your first study, I think the best recommendation is that
learn to identify clean and artifactual data by eye.
However it will take more than one study to make you an expert.
It is important to build up your own personal expertise.
So to begin with I recommend reading 20 articles that use the
same or nearly the same method/protocol as you are using.
Then your eye will be a bit more trained regarding what to expect
as an ERP or EEG pattern from your protocol.
Another thing you can do to train yourself up
is to download the multiple "sample data sets" available for EEGLAB
or other programs, and learn to find and detect artifactual data therein,
through manual, semi-automated, and automated methods.

Keep aware and communicative with other users, such as Eve Alotof,
who has been asking about artifact detection recently on eeglablist.
See Simon's note about an eeglab plugin that combines adjust and another
method.
Etc....

Last, search for an EEG/ERP expert at University of Reading or UCL,
and ask for their kind mentorship regarding these issues.






If you depend on automated methods,



On Sun, Sep 30, 2012 at 3:47 AM, Katherine Naish <
K.R.Naish at pgr.reading.ac.uk> wrote:

>  Thanks for your help.
>
>
>
> A more general question: This is the first EEG experiment I have run, so I
> am not completely sure of how the data should look or how to recognise an
> artefact. Would you recommend using ADJUSTfor artefact rejection? It makes
> more sense to me to use an partly-automated method so that data are
> rejected in a more objective way and I can't bias it, but are there
> disadvantages of using automated methods, or ADJUST specifically?
>
>
>
> many thanks,
>
> katherine
>
>
>
>
>
> *~~~~~~~~~~~~~~~~~~~~~~~~*
>   *Katherine Naish*
> *
> Centre for Integrative Neuroscience & Neurodynamics
>  University of Reading
> *
>
>   ------------------------------
> *From:* Tarik S Bel-Bahar [tarikbelbahar at gmail.com]
> *Sent:* 18 September 2012 04:14
> *To:* Katherine Naish
> *Cc:* eeglablist at sccn.ucsd.edu
> *Subject:* Re: [Eeglablist] Artefact rejection using ADJUST
>
>   I recommend reading the ADJUST documentation.
> To the best of my knowledge in order to use
> an eeglab plug-in, you need to have the files
> loaded properly in eeglab. ADJUST is powerful
> and useful, so I would recommend doing things the
> normal user way first, have evidence that it works
> in the normal way, and then complicate things.
> You don't have to do things through the GUI,
> but you do need to keep your eeglab structures fresh,
> as suggested by Makoto's comment.
>
>
>
> On Thu, Sep 13, 2012 at 9:25 AM, Katherine Naish <
> K.R.Naish at pgr.reading.ac.uk> wrote:
>
>>   Hello,
>>
>>
>>
>> I've been writing a script to cycle through each participant's data from
>> an EEG study I've just run. I would like to use the ADJUST eeglab plug-in
>> for artefact rejection by ICA (using pop_selectcomps and pop_topoplot),
>> but I get error messages indicating that 'ALLEEG', CURRENTSET' etc aren't
>> recognised, as i'm using my own named files rather than the eeglab GUI
>> itself. Is there a way around this? i.e., a way to make these functions
>> call on the data variables that I've created rather than the variables that
>> would be produced if I were using the GUI? Or am I over-complicating things
>> for myself?
>>
>>
>>
>> Thanks in advance,
>>
>> Katherine
>>
>>
>>  *~~~~~~~~~~~~~~~~~~~~~~~~*
>>  *Katherine Naish*
>> *Centre for Integrative Neuroscience & Neurodynamics*
>>  **
>> *University of Reading
>> *
>>
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