[FieldTrip] Diagonal values for wpli in ft_connectivityanalysis

Schoffelen, J.M. (Jan Mathijs) jan.schoffelen at donders.ru.nl
Tue Nov 7 22:03:15 CET 2017

Dear Wanze,

I don’t know what type of data you put into the algorithm, so it’s a bit ‘koffiedik’ kijken, as we say in Dutch. I’d suggest that you start by reading the code, and see whether you understand what causes your ‘issue’.

Best wishes,

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 7 Nov 2017, at 16:33, Xie Wanze <xiew1202 at gmail.com<mailto:xiew1202 at gmail.com>> wrote:

Dear all,
I have the diagonal values unequal to 0 or 1 in the output matrix from the ft_connectivityanalysis using 'wpli'.  These diagonal values are even not equal to each other.  The diagonal values are the same (0s or Infinite) by using 'coh' or 'coh' & cfg.complex = 'imag'.

I never used the diagonal values in my later analysis, and I always changed them to 0s, but I am still curious and confused about why this happened to the method of 'wpli'.

Does anyone ever meet this issue?


fieldtrip mailing list
fieldtrip at donders.ru.nl<mailto:fieldtrip at donders.ru.nl>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.science.ru.nl/pipermail/fieldtrip/attachments/20171107/7917b53b/attachment-0002.html>

More information about the fieldtrip mailing list