[Eeglablist] Filter causality pop_eegfiltnew

Vito de Feo vito.defeo at zmnh.uni-hamburg.de
Wed Jan 15 10:10:27 PST 2014


  Dear Makoto,

the acausal filtering destroy the causality flow. For Granger it is
important to use only causal filter. If you are interested I can send you a
paper about that.

Yes, I know SIFT and I am also using it for my analisys.

Vito

Quoting Makoto Miyakoshi <mmiyakoshi at ucsd.edu>:

> Dear Andreas and Vito,       
>    Sorry Andreas I screwed it when I typed your name.
>     
>    Vito, I would like to learn from you the reason why you want to use
> the minimum phase filter for Granger causality analysis. By the way, you
> know SIFT is available for it? In case you don't know it yet, check
> out http://sccn.ucsd.edu/wiki/SIFT.
>     
>    Makoto
>
>
>
>    2014/1/14 Vito de Feo <vito.defeo at zmnh.uni-hamburg.de>
>
>> Dear Andreas,
>>
>> I download the last version (13.1.1) and now the option is present and
>> it is clearly written that the default is the zero-phase linear
>> filtering.
>>
>> In my previous version (the last of the EEGLAB 12) this option was not
>> present but now, with the version 13, it is present again!
>>
>> Best,
>>
>> Vito
>>
>> Quoting Andreas Widmann <widmann at uni-leipzig.de>:
>>
>>> Dear Vito,
>>>
>>>> in the last eeglab version there is not the minphase parameter in the
>>>> pop_eegfiltnew function.
>>>
>>> Which version is your last version? In 13.1.1 from the web page and in
>>> rev 10261 from SVN the option is present. It was initially introduced
>>> in EEGLAB 13 (but not backported to EEGLAB 12). Could you please check
>>> whether possibly something went wrong with your setup/path and report
>>> back your version number?
>>>
>>>> It was useful to force the filter to be causal. If I have understand
>>>> well now the filter is causal by dafault because it uses the filter
>>>> funcion. Is this correct?
>>>
>>> NO! Causal non-linear filter is NOT the default. Default is and will
>>> remain zero-phase linear filtering. Default filter functions did not
>>> change since EEGLAB 12.
>>>
>>> Best,
>>> Andreas
>>>
>>>> Sorry if this is a vey well known issue but I didn't find any answer
>>>> on the web until now.
>>>> I need filter causality for Granger analisys. If anyone has also
>>>> other suggestion about causal filtering with eeglab, any suggestion
>>>> is very welcome!
>>>>
>>>> Thank in advange!
>>>>
>>>> Vito
>>>>
>>>> --
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>>>>
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>>>> Prof. Dr. Christian Gerloff (Vertreter des Vorsitzenden)
>>>> Prof. Dr. Dr. Uwe Koch-Gromus
>>>> Joachim Prölß
>>>> Rainer Schoppik
>>>>
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>>>> _--
>>>> Makoto Miyakoshi
>>>> Swartz Center for Computational Neuroscience
>>>> Institute for Neural Computation, University of California San Diego
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>> ___--
>> Pflichtangaben gemäß Gesetz über elektronische Handelsregister und
>> Genossenschaftsregister sowie das Unternehmensregister (EHUG):
>>
>> Universitätsklinikum Hamburg-Eppendorf
>> Körperschaft des öffentlichen Rechts
>> Gerichtsstand: Hamburg
>>
>> Vorstandsmitglieder:
>> Prof. Dr. Christian Gerloff (Vertreter des Vorsitzenden)
>> Prof. Dr. Dr. Uwe Koch-Gromus
>> Joachim Prölß
>> Rainer Schoppik___
>
>     
> ___-- ___
>    ___Makoto Miyakoshi
> Swartz Center for Computational Neuroscience
> Institute for Neural Computation, University of California San Diego___



-- 
Pflichtangaben gemäß Gesetz über elektronische Handelsregister und Genossenschaftsregister sowie das Unternehmensregister (EHUG):

Universitätsklinikum Hamburg-Eppendorf
Körperschaft des öffentlichen Rechts
Gerichtsstand: Hamburg

Vorstandsmitglieder:
Prof. Dr. Christian Gerloff (Vertreter des Vorsitzenden)
Prof. Dr. Dr. Uwe Koch-Gromus
Joachim Prölß
Rainer Schoppik
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