[Eeglablist] ICA error

[Erika Nyhus]

Hi Tarik and Makoto,

All datasets were re-referenced to the average reference and the reference
channel was added back to the data so there are 64 channels and no bad
channels.  I am selecting 63 channels and excluding the reference channel
for ICA.  All the datasets are from the same subject and have been
preprocessed in the same way.  I tried running ICA with 64 channels
selected and it runs fine.  I tried running ICA with the tutorial dataset
and selecting 31 channels and get the same error as in my datasets.

Erika

On Tue, Dec 26, 2017 at 6:22 PM, Makoto Miyakoshi <mmiyakoshi at ucsd.edu>
wrote:

> Dear Erika,
>
> If EEG.icasphere has 63 x 63 columns, it means ICA was computed on 63
> channels. How many channels did you have when you run ICA? Was the data
> full-ranked (no bridging across channels, no standard re-referencing before
> ICA)?
>
> Makoto
>
> On Wed, Dec 20, 2017 at 8:28 AM, Erika Nyhus <enyhus at bowdoin.edu> wrote:
>
>> I am getting the following error when I run ICA on a concatenated
>> datasets and selecting 63 of 64 channels.   When I run ICA on any of the
>> datasets individually I do not get an error.  I was wondering if anyone has
>> run in to this problem and how they were able to solve it.
>>
>> eeg_checkset error: number of elements in 'icachansind' (64)
>> does not match the number of columns in the sphere array (63)
>>
>> --
>> Erika Nyhus, Ph.D.
>> Department of Psychology and Program in Neuroscience
>> 6900 College Station
>> Bowdoin College
>> Brunswick, ME 04011
>>
>>
>
>
> --
> Makoto Miyakoshi
> Swartz Center for Computational Neuroscience
> Institute for Neural Computation, University of California San Diego
>



-- 
Erika Nyhus, Ph.D.
Department of Psychology and Program in Neuroscience
6900 College Station
Bowdoin College
Brunswick, ME 04011
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