[FieldTrip] design matrix for ft_freqstatistics; between subjects

Kathrin Müsch k.muesch at uke.uni-hamburg.de
Sat Dec 1 16:15:31 CET 2012


Hi Nenad,

It's like a between trials experiment within one subject (first example of the tutorial). Your design is correct. Remember to use independent samples statistics because you compare two independent groups (in your case subjects).

cfg.statistic = 'indepsamplesT';
cfg. design = design;
cfg.ivar = 1;

Best,
Kathrin

Am 01.12.2012 um 15:02 schrieb Nenad Polomac:

> Hi everybody,
> 
> I have some doubts concerning statistic in between subjects experiment. I couldn't find explanation for this case in tutorial. 
> I have two groups of subjects. And I would like to compare this two groups for the same condition using ft_freqstatistics (cfg.correctm = 'cluster'). I have two time frequency grand average for each group (8 subjects in each group; cfg.keepindividual = 'yes';). I am not sure how a design matrix for ft_freqstatistics suppose to look like 
> 
> I suppose: design=[1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2]
> Is this correct?
> 
> Thank you in advance!
> 
> Nenad
> 
> 
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