PLV computation: Full time resolution

When I compute N×N PLV of source matrix, I got all 1-values matrix, while other connectivity metircs seems to have normal values?

Hello @mosaicwho,

This is expected given the settings in Time resolution and Output option:

Time resolution is set to Full (require epochs), this means the PLV will be computed for each time sample, using N values obtained from N epochs. Then Output option is set to separately for each file, this indicates PLV will be computed for each epoch. Thus when used together, it means that the PLV will be computed for each time sample, but using only one sample (as each epoch is processed separately), by definition PLV computed for one sample is always 1.

After running the process, you can open the report (in the main window File > Report viewer), which indicates this condition:

image

In summary, to compute PLV with full time resolution, it needs to be computed across combined files/epochs

many thanks