[FieldTrip] cluster analysis for peak/latency data

[Eric Maris]

Dear Olga,

> But I'm using it in a little bit different way. I want to cluster my data
from 32
> channels for peak amplitude and latency measures, not raw ERP data. So, as
> an input I have only chn*subjects matrix, without time dimension.
> Technically the script works fine (ft_timelockstatistics), and, from my
point
> of view, it also makes perfect theoretic sense: we can examined both peak
> and latency of the component ( in point by point comparison it might be
> confusing to disentangle these effects). Certainly, the main motivation
for
> this cluster-permutation test was to deal with multiple comparison problem
> and to conduct exploratory investigation (huge datasets). But in case of
> looking a specific component cluster permutation  analysis is helping to
deal
> with MCP introduced by multiple channels. Am I right?

If you do this separately for peak latency and peak amplitude, I see no
problem with this approach.

Best,

Eric




> 
> You comments are highly appreciated,
> 
> Best Regards,
> Olga.
> 
> 
> 
> Olga Sysoeva,
> Research Associate, PhD
> Washington University School of Medicine
> Campus Box 8134
> 660 South Euclid Ave
> Saint Louis, MO 63110-9909
> 
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