binica in fieldtrip

Sameer Walawalkar sameer at ANDREW.CMU.EDU
Mon Feb 12 21:17:58 CET 2007

thanks robert, and the info

cfg.runica.pca = 50

was precisely what I was looking for.


On Mon, 12 Feb 2007, Robert Oostenveld wrote:

> Hi Sameer
> On 9 Feb 2007, at 22:46, Stefan Debener wrote:
>> Try running extended infomax ICA with the PCA option switched on and a
>> reduction to about 50 components. This should speed up the decomposition
>> substantially, and return nice eye blink components. If you do not get
>> dipolar-like component maps, your data may suffer from substantial head
>> movements. Temporal ICA expects that the sensors-to-source configuration
>> remains unchanged during recording.
> Note that cfg.method='runica' also implements extended infomax ICA, see "help
> runica for details". Passing option (such as PCA-dimensionality reduction) to
> runica is done using the cfg.runica substructure in componentanalysis, e.g.
> cfg.runica.pca = 50.
> Since runica and binica have almost the same functionality, it was actually
> trivial to implement it in componentanalysis. I have just added it, you can
> download the latest FT version from the ftp server.
> best regards,
> Robert

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