Before using GIFT to do ICA analysis on your fMRI data, you need to do several pre-processing steps:
(1) slice timing correction (before realignment if your data were collected interleave fashion, otherwise after realignment) - This step is sometime neglected in the block design. For event-related design, it is important.
(2) realignment: get your motion parameters (x,y,z, roll, pitch, yaw)
(3) coregistration - T1-template, then apply transformation matrix to EPI.
(4) segmentation - skull stripping
(5) normalization - normalize to template
(6) smooth - blur the data
You can use spm_jobman('run',jobs) to do batch scripting. Save you time for group analysis.
I enjoyed sharing my life experience with others. Hope this blog can be helpful. Let us have courage and be kind to one another every day. A short bio about me: I grew up in Shanghai, China and owned my Ph.D. in BME from University of Cincinnati in the end of 2013 and moved to Boston for a post-doc position at Boston Children's Hospital/Harvard Medical School. I used advanced imaging techniques (MEG, FMRI, EEG, DTI, etc) to study normal language and reading development in the past 10 years.
Sunday, September 23, 2012
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