There is a very good implementation of surface-based Gaussian Random Field theory (GRF) correction from Keith J. Worsley at:
http://www.stat.uchicago.edu/~worsley/surfstat/
The matlab toolbox there provides functions for reading freesurfer surface data. I have compared the results (by means of simulations) with those from freesurfer permutation testing and I think it is a very good alternative.
Cheers
Jorge Luis Bernal Rusiel Phd Student. Laboratory of functional Neuroscience. University of Pablo de Olavide. Seville. Spain
--- El lun, 6/7/09, Jürgen Hänggi j.haenggi@psychologie.uzh.ch escribió:
De: Jürgen Hänggi j.haenggi@psychologie.uzh.ch Asunto: [Freesurfer] Gaussian random field correction Para: "Freesurfer Mailinglist" freesurfer@nmr.mgh.harvard.edu Fecha: lunes, 6 julio, 2009 12:11 Dear FS experts
Is the GRF correction for multiple comparisons implemented in FS yet and is there any documentation how to use it?
Thanks in advance Best regards Jürgen
Juergen Haenggi Ph.D. (Dr. des.) Division Neuropsychology Institute of Psychology University of Zurich Binzmuehlestrasse 14, PO Box 25 8050 Zurich, Switzerland 0041 44 635 73 97 (phone office) 0041 76 445 86 84 (phone mobile) 0041 44 635 74 09 (fax office) BIN 4.D.04 (office room number) j.haenggi[at]psychologie.uzh.ch (email) http://www.psychologie.uzh.ch/neuropsy/ (website) http://www.juergenhaenggi.ch (private website)
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I've actually implemented that already, but I have not been satisfied with how well the grf results match the simulations.
doug
jorge luis wrote:
There is a very good implementation of surface-based Gaussian Random Field theory (GRF) correction from Keith J. Worsley at:
http://www.stat.uchicago.edu/~worsley/surfstat/
The matlab toolbox there provides functions for reading freesurfer surface data. I have compared the results (by means of simulations) with those from freesurfer permutation testing and I think it is a very good alternative.
Cheers
Jorge Luis Bernal Rusiel Phd Student. Laboratory of functional Neuroscience. University of Pablo de Olavide. Seville. Spain
--- El lun, 6/7/09, Jürgen Hänggi j.haenggi@psychologie.uzh.ch escribió:
De: Jürgen Hänggi j.haenggi@psychologie.uzh.ch Asunto: [Freesurfer] Gaussian random field correction Para: "Freesurfer Mailinglist" freesurfer@nmr.mgh.harvard.edu Fecha: lunes, 6 julio, 2009 12:11 Dear FS experts
Is the GRF correction for multiple comparisons implemented in FS yet and is there any documentation how to use it?
Thanks in advance Best regards Jürgen
Juergen Haenggi Ph.D. (Dr. des.) Division Neuropsychology Institute of Psychology University of Zurich Binzmuehlestrasse 14, PO Box 25 8050 Zurich, Switzerland 0041 44 635 73 97 (phone office) 0041 76 445 86 84 (phone mobile) 0041 44 635 74 09 (fax office) BIN 4.D.04 (office room number) j.haenggi[at]psychologie.uzh.ch (email) http://www.psychologie.uzh.ch/neuropsy/ (website) http://www.juergenhaenggi.ch (private website)
This e-mail (and any attachment/s) contains confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorised copying, disclosure or distribution of the material in this e-mail is strictly forbidden.
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
freesurfer@nmr.mgh.harvard.edu
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Douglas N Greve -
jorge luis