[FieldTrip] Submitting a correlation matrix for cluster-based permutation

Schoffelen, J.M. (Jan Mathijs) jan.schoffelen at donders.ru.nl
Wed Jul 4 08:58:47 CEST 2018


Do you have a null hypothesis? What is it you would want to permute? If you just have scalar value per channel/time point, there’s not much you can do.

Best wishes,
Jan-Mathijs

J.M.Schoffelen, MD PhD
Senior Researcher, VIDI-fellow - PI, language in interaction
Telephone: +31-24-3614793
Physical location: room 00.028
Donders Centre for Cognitive Neuroimaging, Nijmegen, The Netherlands

On 4 Jul 2018, at 02:54, Paul Dhami <pdhami06 at gmail.com<mailto:pdhami06 at gmail.com>> wrote:

Hi FieldTripers,

I was hoping to do a correlation between two sets of EEG datasets in a channel x time fashion.

For each (channel,time), I ran a rho correlation between the two EEG datas, and stored the resulting coefficients in a matrix with the dimensions of channel and time.

I was hoping to apply a cluster-based permutation testing to correct for multiple comparisons, but as the file I was hoping to submit is a raw matrix, I was hoping for some guidance as to 1) whether this is even an appropriate way of achieving a cluster-corrected correlation matrix and 2) how to implement this with the correlation matrix.

Any help would be greatly appreciated.

Thank you.
Paul
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J.M.Schoffelen, MD PhD
Senior Researcher, VIDI-fellow - PI, language in interaction
Telephone: +31-24-3614793
Physical location: room 00.028
Donders Centre for Cognitive Neuroimaging, Nijmegen, The Netherlands



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