[FieldTrip] degrees of freedom

Roy Cox r.cox at uva.nl
Thu Jan 23 16:19:58 CET 2014

Hi all,

I'm using ft_timelockstatistics with indepsamplesT to compare spatial
topographies between two groups (n=15 and n=13). The measure I'm interested
in has no time dimension, so I basically have one sample per electrode for
each subject.

This works fine (I get the effects I hoped for). In order to make the
statistics 'slightly more valid', however, I need to adjust the degrees of
freedom. That is, the data I'm comparing between groups has already had a
covariate taken out. So df has to be df-1.

Doesn't look like Fieldtrip allows you to set this in the cfg struct
somewhere, so any suggestions where I need to hack?



Roy Cox, M.Sc. | Brain & Cognition Group | Department of Psychology |
University of Amsterdam | Weesperplein 4 | 1018 XA Amsterdam | the
Netherlands | room 3.21 | phone: +31 20 525 6847 | email: r.cox at uva.nl
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.science.ru.nl/pipermail/fieldtrip/attachments/20140123/b667dea7/attachment-0001.html>

More information about the fieldtrip mailing list