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Figure 3 | Journal of NeuroEngineering and Rehabilitation

Figure 3

From: Assessment-driven selection and adaptation of exercise difficulty in robot-assisted therapy: a pilot study with a hand rehabilitation robot

Figure 3

Patient-tailored and adaptive therapy concept. The difficulty levels of the neurocognitive robot-assisted exercises (detailed in Figure 2) are customized before the therapy onset using the assessed rotational range of motion (ROM φ ), the just perceptible difference threshold in grasping aperture (DL) and the stiffness Weber fraction (Wf). An automatic difficulty adaptation routine adjusts the exercise difficulty level on a session-by-session basis according to the performance during the last session of the respective exercise (performance computed over the entire exercise session).

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