riable s1_s1 
and subject 2 session 2 information must be entered in variable s1_s2. Design 
matrix information must be entered in _designMat variable.
</li>

<li> 

3 - This option uses regular expressions to get the data set directories. The 
required variables are as follows:

<ul> 

<li> input_directory_name - Full path of the directory where the subjects and 
sessions are located. </li>

<li> subject_dir_regexp - Regular expression used for matching subject 
directories. This variable a