[Eeglablist] Is EEGLAB able to calculate t-score between two conditions?

[Arnaud Delorme]

Dear Jianrong,

you cannot plot t-stat map from the GUI. However, if you have a STUDY, you can always recompute the statistics and plot them from the command line. Something like

[STUDY erpdata erptime] = std_erpplot(STUDY,ALLEEG,'channels',{alllocs.labels});
[T df pvals]=statcond(erpdata);
figure; plot(T);

(this assumes that you have a STUDY loaded in memory).
Best,

Arno

On Aug 22, 2012, at 11:16 AM, Stephen Politzer-Ahles wrote:

> Hello Jianrong,
> 
> The Sum/Compare ERPs dialog (underneath the Plot menu; or pop_comperp() from the command line) can do this with waveforms. It plots waveforms of all the channels on a scalp array, and marks the times on each channel where t is significant.
> 
> I don't know if EEGLAB has a tool to show t-statistics on a topoplot. But you can do this fairly easily by using basic MATLAB commands on the ERPs (from EEG.data), to get a CHANNELSxSAMPLES array of t-statistics, and then give those t statistics (rather than ERP data) to the topoplot() command.
> 
> Best,
> Steve Politzer-Ahles
> 
> On Wed, Aug 22, 2012 at 6:09 AM, JianrongJia <jianrongjia at hotmail.com> wrote:
> Hi 
> 
> Is eeglab able to calculate t-score between conditions across subjects? and draw t-statistic map?
> Is there any plugin or toolbox can do this?
> 
> Sincerely
> 
> Jianrong
> 
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> -- 
> Stephen Politzer-Ahles
> University of Kansas
> Linguistics Department
> http://www.linguistics.ku.edu/
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