Back to the main page.
Bug 2229 - Strange results of ft_sourcestatistics
| Status | CLOSED INVALID |
| Reported | 2013-08-01 10:34:00 +0200 |
| Modified | 2015-07-15 13:31:20 +0200 |
| Product: | FieldTrip |
| Component: | core |
| Version: | unspecified |
| Hardware: | PC |
| Operating System: | Windows |
| Importance: | P3 normal |
| Assigned to: | Jim Herring |
| URL: | |
| Tags: | |
| Depends on: | |
| Blocks: | |
| See also: |
Kaoru Amano - 2013-08-01 10:34:39 +0200
I'm struggling with ft_sourcestatistics within subject. If I run ft_sourceanalysis without setting cfg.rawtrial = 'yes'; and calculate, say, NAI, the result looks fine. If I run ft_sourceanalysis with just adding cfg.rawtrial = 'yes';, and run ft_sourcestatistics between pre and post, the result looks completely different from NAI calculated without cfg.rawtrial = 'yes';. When I'm using the older version of FT, NAI and stat looked similar if I remember correctly... The attached file includes data and script for the comparison.
Kaoru Amano - 2013-08-01 10:55:19 +0200
Since the file was too big to attach, please download it from here. www2.nict.go.jp/cinet/bnc/amano/test_sourcestat.zip
Robert Oostenveld - 2013-08-01 13:53:14 +0200
I downloaded the data and copied it to /home/common/matlab/fieldtrip/data/test/bug2229 for internal use.
Jim Herring - 2013-09-24 16:55:46 +0200
Assigned myself
Jim Herring - 2014-01-29 15:11:30 +0100
Bug does not seem to be a problem anymore as output is highly similar (r=-0.99) in both cases. The correlation is only inversed now because in the test-script the difference between post and pre is plotted while the stat values are calculated on the difference between pre and post (A-B vs B-A).