A low-tech virtual reality application for training of upper extremity motor function in neurorehabilitation

Impaired motor function of the arm is one of the consequences of a neurological disorder, limiting movements that are essential for various daily activities, such as reaching and grasping. To achieve the best possible functional ability of the impaired arm, challenging and motivating training including active, functional and intensive exercises is essential during neurorehabilitation. Virtual reality (VR) is a suitable and promising way to implement these aspects. However, clinical use is limited by the requirement of high-tech equipment in many VR systems. On the other hand, commercial low-tech systems are less suitable for use in patients with motor disorders. In this paper, we describe the development of a relatively low-tech and inexpensive VR application, based on motion capturing, for specific use in neurorehabilitation. We also present some preliminary results of its evaluation in stroke, one of the largest rehabilitation populations.