... this article as: Lehrer et al.: Exploring the bases for a mixed reality stroke rehabilitation system, Part I: A unified approach for representing action, quantitative evaluation, and interactive ... efficient unimpaired performance Figure displays a graphic representation synthesized from the Levin, Kleim and Wolf approach Kwakkel takes a related approach and notes that rehabilitation therapies should ... publications [11,17] discuss the pressing need for quantitative evaluation of customizable approaches to stroke rehabilitation Interactive rehabilitation also demands detailed, quantitative, real-time...