[FieldTrip] cluster-based permutation test in the time dimension

[Schoffelen, J.M. (Jan Mathijs)]

Hi Yoshiko,

I might misunderstand, but there is no way in which the size of a cluster can be defined. The extent of a cluster depends on the a priori threshold, and there’s a small knob (cfg.minnbchan)  - to avoid small bridges or corridors in space.

Best wishes,
Jan-Mathijs


> On 26 Nov 2021, at 06:45, Yoshiko Yabe via fieldtrip <fieldtrip at science.ru.nl> wrote:
> 
> Hi Jan-Mathijs,
> 
> I subscribed to this mailing list today to ask a question almost same
> as the question that was posted a few weeks ago.
> 
> [FieldTrip] cluster-based permutation test in the time dimension
> by Songhee Kim songhee.kim at nyu.edu
> Thu Nov 11 01:17:37 CET 2021
> 
> I am analyzing the data with cfg.statistic = 'ft_statfun_depsamplesT'
> and cfg.correctm = 'cluster'.
> 
> According to your response to Songhee, 'each sample by
> definition only has 2 neighbours (one on either side)' in time domain,
> Does your response mean that the minimum number of samples to build
> a cluster is two and the minimum temporal length is defined by sampling
> rate?
> Maybe the question should be simplified:
> How long in time should a cluster last?
> 
> Yoshiko Yabe
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