How can I extract a voxel timeseries to a text file?
From the AFNI graph window, you can use the menu item Opt->Write Center to write the central sub-graph’s data to a file. This file will be named something like 001_002_003.1D, where 001 is the x-axis voxel index (sometimes called I), 002 is the y-axis voxel index (J), and 003 is the z-axis voxel index (K). These voxel indexes are shown in the lower-right corner of the graph window. They can also be shown in the AFNI controller window if you turn on the Datamode->Misc->Voxel Coords toggle.
