Phase- angle

[jan-mathijs schoffelen]

Dear Natalia,

Basically, the information you want can already be extracted from the
data. However, you do not have to call freqdescriptives in the first
place.
When you call freqanalysis with cfg.output = 'powandcsd' and
cfg.keeptrials = 'yes' and cfg.channelcmb as a cell-array containing
the sensor-combination you want to compute the phase-difference from
you pretty much have it.
The output to freqanalysis will then contain single trial, complex
valued cross-spectral densities. The angle can be easily extracted.

Hope this helps,

Jan-Mathijs

On May 20, 2008, at 10:47 AM, Natalia Grion wrote:

> Dear fieldtrippers,
> one question about freqdescriptives:
> I'm computing  the phase locking value (and its angle) of  2
> electrodes. I want to keep the phase difference of  trials (apart
> from  the average; plv), there is no cfg.keeptrials option for
> freqdescriptives, did anybody implement it?
> Thanks!
> Natalia
>
> ----------------------------------
> The aim of this list is to facilitate the discussion between users
> of the FieldTrip  toolbox, to share experiences and to discuss new
> ideas for MEG and EEG analysis. See also http://listserv.surfnet.nl/
> archives/fieldtrip.html and http://www.ru.nl/fcdonders/fieldtrip.

----------------------------------
The aim of this list is to facilitate the discussion between users of the FieldTrip  toolbox, to share experiences and to discuss new ideas for MEG and EEG analysis. See also http://listserv.surfnet.nl/archives/fieldtrip.html and http://www.ru.nl/fcdonders/fieldtrip.