ScienceDaily (Feb. 28, 2008) — Research on autistic spectrum disorder (ASD) shows that neurofeedback (EEG biofeedback) can remediate anomalies in brain activation, leading to symptom reduction and functional improvement. This evidence raises the hopes for a behavioral, psychophysiological intervention moderating the severity of ASD.
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Research has shown that related symptoms of ASD are the result of brain dysfunction in multiple brain regions. Functional neuroimaging and electroencephalography research have shown this to be related to abnormal neural connectivity problems. The brains of individuals with ASD show areas of both excessively high connectivity and deficient connectivity. In other words, some areas of the brain are chatting excessively with themselves, while failing to communicate normally with other relevant regions.
In one 2006 study using connectivity-guided neurofeedback, pre-post analyses showed a 40 percent reduction in autistic symptoms, enhancement of function between the brain and behavior, and reduction of hyperconnectivity. These results begin to verify the theory that interhemispheric, bipolar neurofeedback montages can lead to reduction in hyperconnectivity based on the reward band trained.
Neurofeedback seems capable of remediating connectivity disturbances when these data are considered as part of treatment planning. Connectivity-guided neurofeedback is capable of significantly remedying these anomalies and reducing autistic symptoms. Hyperconnectivity seen in patients with ASD can be remedied with coherence training and other neurofeedback approaches.
The research is reviewed in a new article published in Biofeedback.