, A.L. (1998) Gait variability and basal gangia disorders: stride-to-stride variations in gait cycle timing in Parkinson’s and Huntington’s disease. Mov. Disord. 13:428-437 Hausdorff, J.M., Peng, C.-K., Ladin, Z., Wei, J.Y., Goldberger, A.L. (1995) Is walking a random walk? Evidence for long range correlatio