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Deconvolution Analysis of FMRI Time Series Data - Waisman ...

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-stim le k "sname[j]"In this case, the -stim le command species that the kth input stimulus function iscontained in column j <strong>of</strong> le sname. Note: The column indexing begins with 0 i.e., therst column corresponds to j = 0, etc. Also note that the square brackets around thecolumn index must be enclosed within quotation marks.-stim label k slabelThe optional -stim label command is used to specify the string slabel for labeling theoutput corresponding to the kth input stimulus function.-stim minlag k mThe optional -stim minlag command species the minimum time lag m for estimation <strong>of</strong>the impulse response function corresponding to the kth input stimulus. The default valueis m =0.-stim maxlag k nThe optional -stim maxlag command species the maximum time lag n for estimation <strong>of</strong>the impulse response function corresponding to the kth input stimulus. The default valueis n =0. Note that for each input stimulus, it is required that: min lag max lag.-stim nptr k pThe optional -stim nptr command species that there are p (p = 1 2 3:::) time pointsin the kth input stimulus for each TR. The default value is p =1. If the input 3d+timedataset contains N points, then the kth input stimulus must contain at least p N points.If p>1, then the user must align all input slices to 0 time oset beforehand (see program3dTshift). Note: The IRF time limits specied with -stim minlag and -stim maxlag are inmultiples <strong>of</strong> TR=p. Therefore, the commands:-stim minlag k m-stim maxlag k n-stim nptr k pindicate that the kth IRF extends from m TR=p to n TR=p.-num glt gThe -num glt command is used to indicate that g general linear tests will be used. The-num glt command is optional except when g > 10. Note: The -num glt command mustprecede the following -glt commands.-glt s gltnameThe optional -glt command is used to conduct a general linear test. The parameters species the number <strong>of</strong> linear combinations (or linear constraints) in the general lineartest. The matrix which determines the general linear test must be contained in le gltname.Note that the matrix must contain s rows, each row specifying a linear constraint on the23

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