[Eeglablist] Topography

Makoto Miyakoshi mmiyakoshi at ucsd.edu
Tue Apr 1 19:55:57 PDT 2014

Dear Andres,

Type 'help topoplot' in the command line.
It says:

topoplot(datavector, EEG.chanlocs)

This is pretty simple. Here, datavector should be a column matrix such that

datavector = mean(mean(sevenSubjectsEEG(:,410:440,:),2),3);

where sevenSubjectsEEG is each subject's averaged channel x latency stuck
in the third dimension, like [channels, latency, subjects], and unit for
latency should be in frame and not millisecond (unless your sampling rate
is 1000Hz).

If you need more explanation let us know.


2014-03-31 12:07 GMT-07:00 Andres Munguia Barcenas <
andres.munguiabs at udlap.mx>:

>  Hi,
>  I was running an experiment with a group 7 subjects. In the analysis, I
> want to get a topography which shows the average of the group (right now I
> can get a topography of each subject). Ideally, I would like to see the
> average of the activity in a window of 410 to 440 ms post stimulus.
>  How can I get that topography?
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Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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