File naming conventions for fMRI data files:


I finally completed the voxel cropper and have run it on the data from subject 
02882.  I created two new subdirectories - lb_data and lt_data for each of the 
brain areas.  The data has been cropped according to the voxel info we were 
given so each of the data elements now has a small number of entries.

In each of these directories there is one file for each of the trials, where 
each line of the file is a set of 15 floating point numbers in ascii, 
separated by spaces, as we discussed.  An example filename is as follows:

     02882_lb_i525_c05_n17.031
          02882 = subject number
          lb    = brain areas
          i525  = original image index (time) of the first image
                  in this subsequence
          c05   = experimental condition
          n17   = number of images in this subsequence
          .031  = index of the trial for this subject (begins with trial 000)

There is also a file named 02882_lb.loc which is the x,y,z locations (the
first location is index 0,0,0) of the cropped voxels and the file 02882_lb.hdr
which contains various human readable information about the data,

Chuck

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Additonal symbols for example files:

          trn   = training data
          tst   = test data
          o16   = 16 is the column number of the first output variable
                  and