Abnormal neural activity recorded from the deep brain of Parkinson's disease and dystonia patients

Movement disorders such as Parkinson's diseases and dystonia are caused by abnormal neural activity of the basal ganglia located deep in the brain. The basal ganglia are connected to the cerebral cortex in the brain surface through complex neural circuits. Their basic structure and connections, as well as the dysfunctions in movement disorders, have been examined extensively by using experimental animals. On the other hand, little is known about the human brain that is much more complex in either normal or diseased states.

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