[Eeglablist] problem with file size

[Makoto Miyakoshi]

Dear Angel,

If you are using 32bit OS, even if you have 4GB RAM it may complain about
memory. From my experience, importing ASCII somehow requires a lot of
memory.

I would suggest you borrow 64bit OS machine to just import the data. Once
it is imported and saved as a set + fdt file you'll probably able to load
it with your 32bit OS machine.

Makoto


2013/5/2 Angel Tabullo <angeltabullo at yahoo.com>

> Hi everyone! I'm trying to import raw EEG data in ASCII .txt file format
> to EEGLAB. EEG activity was recorded from 32 channels at 256 Hz and is
> aproximately 1:30 hour long, resulting in a 222.879 kb file. I was able to
> import it using EEGLAB version 7.9.2.20 (I tried the latest version first,
> but kept obtaining an "out of memory" error), and save it, but when I try
> to load the dataset I get the following message: "EEGLAB error in function
> eeg_getdataact() at line 162: Out of memory". Due to limitations in my
> acquisition software, I can't export the registry in other more compact
> formats like .EDF.
>
> I thought one possible solution would be to divide the file in different
> parts, filter and extract the epochs from each part, and then concatenate
> them all before ICA analysis, but I'm concerned that filtering each part
> separately and reuniting them later may not be an adequate procedure. What
> do you think? I would very much appreciate suggestions and comments.
>
> Thank you!
>
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-- 
Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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