[FieldTrip] Source reconstruction - low-rank leadfield

tibor.auer at gmail.com tibor.auer at gmail.com
Mon Oct 19 19:45:20 CEST 2020


Dear FieldTrippers,

 

I have some questions regarding source reconstruction.

 

We use eLORETA, which runs fine for most participants, however, I receive this error message for quite a few:

 

the forward solutions have a different rank for each location, which is not supported

 

The rank of the leadfdield is reduced at each sourcemodel position to the default 3. However, it sometimes has an even lower rank (often 0) at certain sourcemodel positions, and I am not sure how to interpret it. We use a cortical sheet based sourcemodel, and I have noticed that only a handful (<<1%) of positions are affected. My educated guess would be to exclude those positions, but I am not sure how it affects the analysis, either.

 

Kind regards,

Tibor 

 

Auer, Tibor M.D. Ph.D.

Research Fellow

School of Psychology, Faculty of Health and Medical Sciences

University of Surrey, Guildford GU2 7XH

 <mailto:T.Auer at surrey.ac.uk> T.Auer at surrey.ac.uk

 <https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftwitter.com%2FTiborAuer&data=02%7C01%7Ct.auer%40surrey.ac.uk%7Cdb32da458c424eedef2908d7d4bd1421%7C6b902693107440aa9e21d89446a2ebb5%7C0%7C0%7C637211780868086968&sdata=zrT5%2FnGGsar14C3WartuU99tzsfLu30Peh9fuaqrAUg%3D&reserved=0> @TiborAuer

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.science.ru.nl/pipermail/fieldtrip/attachments/20201019/bd472c68/attachment.htm>


More information about the fieldtrip mailing list