[Eeglablist] Help with EEG Lab -- Basic data analysis

[Francisco Muñoz]

Dear Danielle:

 

                Try to import the CNT file using 32-bit instead of 16-bit.

                This is because Neuroscan uses 32-bit in the EEG-recordings.

 

Best regards,

Francisco Muñoz.

 

From: eeglablist-bounces at sccn.ucsd.edu
[mailto:eeglablist-bounces at sccn.ucsd.edu] On Behalf Of Danielle Farrar
Sent: jueves, 09 de julio de 2009 17:08
To: eeglablist at sccn.ucsd.edu
Subject: [Eeglablist] Help with EEG Lab -- Basic data analysis

 

Hi-

I'm currently trying to use EEGlab (currently using 6.03b) with Matlab 2009a
to analyze some CNT files obtained from NeuroScan 4.3.  The first problem I
am running into is that the waves in the CNT file are filled in, and not a
line.

I epoched the CNT file and then sorted based on events.  I am trying to look
at the data for one of these types of events.  When I choose to scroll the
channel data, I still see the filled-in waves, instead of a line.  When I
zoom in, it looks almost as if there's an extremely high frequency wave that
is overlaid on top of the normal wave.  It doesn't have this appearance in
Neuroscan.  Every time I try to filter any of the files, Matlab crashes.  

Then when I try to plot the channel spectra and maps, channel locations do
not appear on the plot.  I have already looked up the channel locations and
verified in the 2-d map that the channel locations are correct.  This
operation also appears to crash matlab entirely.  

Any help would really be appreciated.

Thanks!
Danielle

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