A method for the treatment of gait problems associated with Parkinson's Disease in a subject involves the use of virtual cues which are delivered to the subject in a spatial orientation and at rate which enable the initiation and sustainment of ambulation, as well as the suppression of dyskinesia associated...http://www.google.de/patents/US5597309?utm_source=gb-gplus-sharePatent US5597309 - Method and apparatus for treatment of gait problems associated with parkinson's disease