[Eeglablist] baseline correction of cluster ERP in STUDY
Arnaud Delorme
arno at sccn.ucsd.edu
Tue May 29 20:57:11 PDT 2012
Dear C,
the problem has been corrected.
Thanks,
Arno
On May 30, 2012, at 2:06 AM, Makoto Miyakoshi wrote:
> Dear C (cc to Arno),
>
> I send your feedback to our EEGLAB developer Arno (Dr. Delorme). Yes,
> you are right. That seems a typo.
> Thank you.
>
> Makoto
>
> 2012/5/29 C Kalfaoglu <c.kalfaoglu at sheffield.ac.uk>:
>> Hi Makoto,
>>
>> Thank you, that was very helpful (apparently this was what I've been looking
>> for: 'erpparams',{'rmbase' [-6000 -200] }).
>>
>> Its a very small thing, but I think there is a typo (which may already be
>> fixed in later versions) on line 30 of the std_precomp function:
>>
>> % 'erpparams' - [cell array] Parameters for the std_spec function. See
>> std_spec for more information.
>>
>> Should 'std_spec' be 'std_erp'? This is probably obvious to most but I
>> thought I'd bring it up anyway.
>>
>> Thank you,
>>
>> C
>>
>>
>>
>> On 29/05/12 19:51, Makoto Miyakoshi wrote:
>>>
>>> Dear C,
>>>
>>>> So my question is: Is there a way to change the ERP baseline within the
>>>> STUDY structure, or do I have to re-epoch all my datasets separately
>>>> outside the STUDY, and create a new STUDY with different baseline
>>>> periods?
>>>
>>> From GUI, you can specify the baseline for ERP when running precompute.
>>>
>>> There is of course another method outside GUI, which is to edit
>>> STUDY.cluster(1,x).icaerp (if I remember correctly). Run 'plot erp'
>>> for all cluster once, and press ok to close the GUI (this updates your
>>> STUDY in the workspace) and you'll find STUDY.cluster(1,x).icaerp. If
>>> you are not sure about it, please let me know.
>>>
>>> Makoto
>>>
>>> 2012/5/24 C Kalfaoglu<c.kalfaoglu at sheffield.ac.uk>:
>>>>
>>>> Hi all,
>>>>
>>>> I am sorry for repeating an already asked question (the subject of this
>>>> email is copied from a thread in the eeglab archive), but the answer
>>>> doesn't seem to be very clear to me.
>>>>
>>>> I've created a study using the whole epoch length as the baseline for
>>>> ERP and ERSP (i.e. from 1000*ALLEEG(1).xmin to 1000*ALLEEG(1).xmax).
>>>>
>>>> Now I would like to change the basline period.
>>>> Changing the baseline period for ERSP seems straight forward through:
>>>>
>>>> std_precomp( ... ,
>>>> 'erspparams',{... ,'baseline', [1000*ALLEEG(1).xmin -200], ... },
>>>> ...).
>>>> I am assuming the baseline specified here will only affect the ERSP and
>>>> ITC measures.
>>>>
>>>> However, similar options in 'erpparams' or 'std_erp' don't seem to exist
>>>> for changing the erp baseline?
>>>>
>>>> So my question is: Is there a way to change the ERP baseline within the
>>>> STUDY structure, or do I have to re-epoch all my datasets separately
>>>> outside the STUDY, and create a new STUDY with different baseline
>>>> periods?
>>>>
>>>> Thank you,
>>>> C
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>>>
>>>
>>>
>>
>
>
>
> --
> Makoto Miyakoshi
> JSPS Postdoctral Fellow for Research Abroad
> Swartz Center for Computational Neuroscience
> Institute for Neural Computation, University of California San Diego
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