<qa>  What is the test of variables of attention?Neurological testing Gross Motor Function Measure, Pediatric Evaluation of Disability Inventory, and the Test of Variables of Attention will be performed at baseline, immediately after experimental treatment 40, and at 3 and 6 months after experimental treatment 40. Statistical analysis will be performed on these test data to determine any changes from baseline, or between group differences, in the functional capabilities of the study subjects. 