[Eeglablist] Using Topoplot() function for Non-ICA data

Stephen Politzer-Ahles spa268 at nyu.edu
Sun Feb 22 19:11:55 PST 2015

Hello Neha,

This should be possible. topoplot() takes a vector of values (typically
amplitudes, or mean amplitudes over a time window) for each channel, so it
should work the same if you just put in the standard deviations instead.

What "does not work" about what you tried? What was your code, what error
did you get, etc.?


Stephen Politzer-Ahles
New York University, Abu Dhabi
Neuroscience of Language Lab

On Sun, Feb 22, 2015 at 6:21 PM, Neha Tadimeti <nehatadimeti at gmail.com>

> Hello,
> I am a graduate student at Rutgers University. I am currently doing a
> research on EEG - BCI data.
> I have calculated the mean and standard deviation of the distribution for
> each electrode data for each trial. Now I wish to visualize how the spread
> (Standard deviation) is changing across trials at each electrode on the
> brain. I basically want to color code the brain with standard deviation as
> its parameter.
> I tried using topoplot() function as a command line by giving my
> parameters as input instead of ICA data. It does not work that way.
> Can anybody suggest if EEGLAB can help me plot 2-D or 3-D images of
> non-ICA data. If not, I would really appreciate if any alternative methods
> are suggested.
> Thank you.
> Regards,
> Neha Tadimeti.
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