Two techniques to normalize muscle tone were evaluated with nine infants and young children with cerebral palsy who were enrolled in the Rural Infant Stimulation Environment (RISE) Program, near Tuscaloosa, Alabama. Electromyography (EMG) and skin temperature data were used to assess the effects of trunk rotation and slow rolling on a ball. EMG effects on muscle relaxation/contraction and thermal information collected by sensors were analyzed. Ss were treated twice a week for 6 weeks. Results indicated that changes in muscle tone, due to either trunk rotation or slow rolling, could be measured through use of EMG. The change was statistically significant when measured just prior to intervention and immediately thereafter. No significant difference was found on skin temperature readings. EMG did not discriminate between the effects of trunk rotation or slow rolling on a ball. Variables that may have influenced the results are noted, and a 12-page reference list is provided. The appendices describe two aspects of the RISE Computerized Checklist and Curriculum for the Motorically Delayed/Impaired Child (selected assessment components and selected curricular activities); the appendices also include demographic data and the Movement Assessment of Infants. (CL)