[FieldTrip] cluster analysis for peak/latency data

[Sysoeva, Olga Vladimirovna]

Dear fieldtrip list members,

I’m applying cluster permutation algorithm, implicated in Fieldtrip software to my EEG data.

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?

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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