Correlation controlled adaptive filtering for FMRI data
2005 (English)In: IFMBE Proceedings: NBC'05 13th Nordic Baltic Conference Biomedical Engineering and Medical Physics / [ed] Ronnie Lundström, Britt Andersson, Helena Grip, Umeå: IFMBE , 2005, 193-194 p.Conference paper (Refereed)
In analysis of fMRI data, it is common to average neighboring voxels in order to obtain robust estimates of the correlations between voxel timeseries and the model of the signal expected to be present in activated regions. This paper presents a novel method for analysis of fMRI data, which extends this approach by averaging only neighboring voxels whose timeseries have similar correlation coefficients. A comparison between the new method and two other filtering strategies is also presented, and the novel method is shown to have superior ability to discriminate between active and inactive voxels.
Place, publisher, year, edition, pages
Umeå: IFMBE , 2005. 193-194 p.
, IFMBE Proceedings, ISSN 1680-0737 ; vol. 9
Medical and Health Sciences
IdentifiersURN: urn:nbn:se:liu:diva-28765Local ID: 13942OAI: oai:DiVA.org:liu-28765DiVA: diva2:249577
NBC'05 13th Nordic Baltic Conference Biomedical Engineering and Medical Physics, Umeå, Sweden, June 13th - 17th