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Install AFNI

Installing the AFNI software package has a few basic steps, most of which can be accomplished in many different ways. The basic steps are as follows: Step 1: get the set of programs Step 2: put the programs in a useful directory Step 3: update the PATH to include that directory Step 4: get some data to look at

README.environment

The AFNI program allows you to use several Unix environment variables to influence its behavior. The mechanics of setting an environment variable depend on which shell you are using.

AFNI Startup Manual

A brief startup manual for AFNI (but you really need to read the manuals, too).

The AFNI TTatlas+tlrc Dataset

The dataset that provides the Talairach Daemon database for AFNI is stored in a dataset named TTatlas+tlrc. This dataset has 2 byte-valued sub-bricks at 1 mm resolution (please note that it is stored at the "small Talairach brick" size). Sub-brick #0 contains the "gyral" information; sub-brick #1 contains the "area" information. (These corresponded to database "levels" 3 and 5 in the original database from San Antonio. The other levels were at a much cruder level, and have been discarded in AFNI.) The purpose of this Web page is to describe the format of the TTatlas+tlrc dataset and some files extracted from it.