Аннотация:Children with pediatric cancer usually treated with chemo- and radiotherapy. Because of such treatment, psychologists and health professionals declare cognitive and motor abilities decline in cancer patients. Timing is extremely important for movement and speech, and understanding the neurobiological basis of rhythm perception and reproduction can be helpful in addressing motor and cognitive recovery after brain lesions. The aim of our study was to investigate audio-motor synchronization abilities in children with different nervous system lesions. Our sample included 98 children, divided into three groups. The first group was consisted of children treated for posterior fossa tumors, mostly medulloblastoma and astrocytoma (PFT-group, n = 44, mean age 12.09 2.92 years). Our results suggest that degree of brain damage after cancer and treatment is associated with ability to synchronize arm movements with auditory cues (PFT > ALL > control). Healthy children are able to anticipate stimuli, but ALL and especially PFT patients mostly reacted after stimulus onset.