THE INVESTIGATION OF CRITERION VALIDITY OF THE MODIFIED ASHWORTH SCALE USING THE ALPHA MOTONEURON EXCITABILITY INDICATORS - N. Ghotbi,; M.R. Hadian,; G.R. Olyaei,; H. Bagheri,; S. Talebian,; N. Nakhostin-Ansari S. Nafissi, (Acta Medica Iranica)