The results of the study on conjugate reaction time (BP) of hands (time of simple reaction) in 16 patients--with Parkinson's disease, cerebral palsy and spastic torticollis before and after surgery--are stated. The analysis of conjugate BP left arm and arm BP signals of sound and light modality with a warning signal to determine the morphological structures which depend on the friendly reaction was performed. Was found that part of the surveyed patients had no violations of conjugate BP, the other part had significant changes in the magnitude of the correlation coefficient, by which evaluated conjugate BP left and right hands. Violations of the correlation coefficient between BP left arm and right arm BP were observed or sound, or doth on the sound, and the light signal. Violations of the conjugate hand reaction were observed in the ventro-lateral talamotomii, subtalamotomii and pallidotomii.