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Objectives: Autism Spectrum Disorder (ASD) is a group of neurodevelopment syndromes with impairments in social communications and restrictive or repetitive behaviors. Neurofeedback is a new method that may regulate neuro and metabolic function in brain. This study is semi-experimental, with pre and post test. 
Methods: In 26 children with ASD, 40 sessions of Neurofeedback were done. Brain waves were recorded before and after intervention by EEG/ERP 19 channels. 
Results: The average of Theta (low frequency) power decreased, but there was no difference in the Gamma of Gamma waves (High frequency). 
Discussion: Our findings showed that the implementation of Neurofeedback sessions improved Theta, which leads to better social communication.