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Both these things can be easily done with command line utities in fsl: To tranform a single voxel co-ordinate from image space to talairach space you can use the command img2talcoord see: http://www.fmrib.ox.ac.uk/fsl/flirt/overview.html#misc To extract the time course of a single voxel as a text file you can use the command tsplot eg tsplot myanalysis.feat -C 20 30 40 mytimeseries.txt Usage: tsplot <feat_directory.feat> [options] [-f <4D_data>] input main filtered data, in case it's not <feat_directory.feat>/filtered_func_data [-c <X Y Z>] : use X,Y,Z instead of max Z stat position [-C <X Y Z output_file.txt>] : use X,Y,Z to output time series only - no stats or modelling [-o <output_directory>] change output directory from default of input feat directory [-n] don't weight cluster averaging with Z stats hope that helps Heidi Jason Steffener wrote: >Hello, >When I finish a FEAT analysis the results show a table of coordinates in >native voxel space and Talairach space for the maxima in the clusters. How >could I find out the Talairach location of other voxels? Suppose, I choose a >voxel in the native space and want to find its Talairach location. I know >that the matrices to do the transformation are saved as *.mat files. What is >the correct multiplication of a native location to gets its Talairach? (In >Matlab for instance) > >Is there an easy way to save to a text file the time vector for a particular >voxel as viewed in FSL view? I know that I can load up the entire 4-D image >into matlab and then pick out a voxel but is there a built in way that I >have missed? > >thank you, >Jason. > > -- Dr Heidi Johansen-Berg Wellcome Trust Training Fellow Oxford Centre for Functional Magnetic Resonance Imaging of the Brain John Radcliffe Hospital Headington Oxford OX3 9DU http://www.fmrib.ox.ac.uk/~heidi Tel: 01865 222782 Fax: 01865 222717 email: [log in to unmask]