Thanks, Matthew, I will go with the 200s for all tasks then ;). greetings
2017-06-29 20:56 GMT+02:00 Glasser, Matthew <[email protected]>: > We used a sigma of 200s for all tasks. In practice if you clean the data > I doubt it matters whether you do anything more than a linear detrend. > > Peace, > > Matt. > > From: <[email protected]> on behalf of David Hofmann < > [email protected]> > Date: Thursday, June 29, 2017 at 7:56 AM > To: hcp-users <[email protected]> > Subject: [HCP-Users] How to choose high-pass filter cut-off period for > the task data (block design) > > Hi all, > > I was wondering how to choose the high-pass filter cut-off period (in > seconds) for the task data when the block onset files are used for the 1st > level GLM (with spm12). As far as I understood the period should be around > twice the period until a block repeats. > > Based on the .txt onset files (reading out the block duration) I > determined the following cut-off frequencies (in seconds), but I'm confused > about what to choose for the Motor and the Working memory task: > > Emotion: 72s (block length=18s -> 2*18*2) > Gambling: 112s (block length = 28s -> 2*28*2) > Language: 86s (block length math ~13s, block length story ~ 30s -> > (13+30)*2) > Motor: ? (block length = 12s, but there are several blocks, so not sure > here) > Relational: 64s (block length = 16s -> 2*16*2) > Social: 92s (block length = 23s -> 2*23*2) > WM: ? (the same blocks don't repeat here, so not sure) > > > I'm using the already preprocessed volume data files > (e.g. tfMRI_EMOTION_LR.nii from 100307_3T_tfMRI_EMOTION_preproc) > > Any help appreciated! > > greetings > > David > > _______________________________________________ > HCP-Users mailing list > [email protected] > http://lists.humanconnectome.org/mailman/listinfo/hcp-users > _______________________________________________ HCP-Users mailing list [email protected] http://lists.humanconnectome.org/mailman/listinfo/hcp-users
