[FieldTrip] 2x3 ANOVA depsamplesHotTsqr

Thu Dec 22 09:42:22 CET 2016

Dear all,

To add to the discussion: note that it is in general not straightforward to do a valid statistical inference about interaction effects in a permutation framework. This discussion pops up once in a while on this list, so for those interested in carrying this further I would first recommend to dig into the archive.

Best wishes,
Jan-Mathijs

J.M.Schoffelen
Senior Researcher, VIDI-fellow
Donders Centre for Cognitive Neuroimaging, Nijmegen, The Netherlands

On 22 Dec 2016, at 10:35, Aykut Eken <ekenaykut at gmail.com<mailto:ekenaykut at gmail.com>> wrote:

Dear Julian,

Thank you for your effort. However, that is what MATLAB can do by using the function “rm” and “ranova”. So, I think the cluster permutation approach should be used while applying a N - way repeated measures ANOVA.

Regards

Aykut Eken, PhD

Düzce University
Faculty of Engineering,
Biomedical Engineering Department
Konuralp Campus, 81620
Düzce / Turkey.
Tel : 0380 542 11 00 / 4546
Fax : 0380 542 10 37
e-mail : aykuteken at duzce.edu.tr<mailto:aykuteken at duzce.edu.tr>
e-mail : ekenaykut at gmail.com<mailto:ekenaykut at gmail.com>

On 21 Dec 2016, at 18:17, Julian Keil <julian.keil at gmail.com<mailto:julian.keil at gmail.com>> wrote:

Dear Lin, Aykut and Alex,

I wrote a fieldtrip-compatibe wrapper function to the ANOVA-Functions by Trujillo-Ortiz (the originals can be found on the Matlab File Exchange) which can handle n-way repeated ANOVAs.
These functions can handle timlock, TFR or source-level FT structures.
The code can be found on by Github: https://github.com/juliankeil/VirtualTools
Please be aware, that these ANOVA-functions in DO NOT use a permutation approach or provide any correction based on clusters. All correction for multiple comparisons has to be done after running the ANOVA.

Some recent examples in which these functions were used are:
Keil, J., Pomper, U., Senkowski, D., 2016. Distinct patterns of local oscillatory activity and functional connectivity underlie intersensory attention and temporal prediction. … Cortex 74, 277–288. doi:10.1016/j.cortex.2015.10.023
Roa Romero, Y., Keil, J., Balz, J., Gallinat, J., Senkowski, D., 2016a. Reduced frontal theta oscillations indicate altered crossmodal prediction error processing in schizophrenia. J Neurophysiol 116, 1396–1407. doi:10.1152/jn.00096.2016
Roa Romero, Y., Keil, J., Balz, J., Niedeggen, M., Gallinat, J., Senkowski, D., 2016b. Alpha-Band Oscillations Reflect Altered Multisensory Processing of the McGurk Illusion in Schizophrenia. Frontiers in Human Neuroscience 10, 41. doi:10.3389/fnhum.2016.00041

Maybe these reference suggested by an anonymous reviewer could be helpful in the implementation of a permutation approach:
Anderson, M., Braak, C., 2002. Permutation tests for multi-factorial analysis of variance. Journal of Statistical Computation and Simulation 73, 85–113.
Anderson, M.J., 2001. Permutation tests for univariate or multivariate analysis of variance and regression. Can. J. Fish. Aquat. Sci. 58, 626–639. doi:10.1139/cjfas-58-3-626

Good luck,

Julian

Am 21.12.2016 um 14:34 schrieb 蔡林:

Me too, fieldtrip probably cannot investigate the interactions using cluster-based permutation test.
Who can provide alternative methods to solve this kind of problem?

lin
-----原始邮件-----
发件人:"Aykut Eken" <ekenaykut at gmail.com<mailto:ekenaykut at gmail.com>>
发送时间:2016-12-21 20:41:11 (星期三)
收件人: "FieldTrip discussion list" <fieldtrip at science.ru.nl<mailto:fieldtrip at science.ru.nl>>
抄送:
主题: Re: [FieldTrip] 2x3 ANOVA depsamplesHotTsqr

I also have the same problem. Does fieldtrip have a statistical analysis function for N- way ANOVA?

Aykut

El 21 dic 2016, a las 15:09, Alex Sel <alex.sel at psy.ox.ac.uk<mailto:alex.sel at psy.ox.ac.uk>> escribió:

Dear list,

I have an 2x3 ANOVA design and I would like to test the interactions using the cluster-based permutation test. I would like to use the statfun depsamplesHotTsqr. However, it seems that it has not been implemented yet.

Has anyone used the depsamplesHotTsqr and knows how to implement it?

Any insights on this would be much appreciated.

Thank you.

Best wishes,
Alex Sel, PhD
Postdoctoral Researcher
Department of Experimental Psychology,
University of Oxford,
9 South Parks Road,
OX1 3UD
Tel: 01865 277 229
Email: Alex.sel at psy.ox.ac.uk<mailto:Alex.sel at psy.ox.ac.uk>

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