[Eeglablist] Plot ERPimage, ERSP, ITC in a study with a subject and two conditions

Makoto Miyakoshi mmiyakoshi at ucsd.edu
Fri Apr 4 19:42:20 PDT 2014

Dear Derrick and Arno,

I haven't used Channel STUDY so this one is unconfirmed. Derrick could you
check it?


2014-04-04 2:30 GMT-07:00 GROSSELIN, Fanny <fanny.grosselin at edu.esiee.fr>:

> Hi everybody
> I am new in eeglab and I have some problems.
> Indeed, I have created a study with only one subject, two conditions. I
> would like to compare these conditions. Because I have only one subject, I
> check 'save single-trial measures for single-trial statistics' in the
> pre-compute channels measures figure and 'use single trials' in the set
> statitical parameters figure.
> Then, when I plot ERPimage, ERSP or ITC for on channel, I obtain one
> figure divided into two plots : one plot per condition for this channel.
> However, if I choose several channels and I plot ERPimage, ERSP or ITC, I
> obtain one figure divided into 'n' plots ('n' is the number of channels I
> have chosen) but there is not distinction between the two conditions. I
> wonder if the plot (per channel) is the average between the two conditions
> plots or anything else?
> Moreover, for the option ERPimage, when I choose one channel, the
> corresponding plot is trials as vertical axe and time as horizontal axe.
> However, when I choose several channels, I obtain a plot with frequency as
> vertical axe and time as horizontal axe. Is there an explanation? Is there
> an error in axe title?
> Thank you in advance for your help,
> Fanny
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Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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