Fig. 1From: Quantitative motor assessment of muscular weakness in myasthenia gravis: a pilot studyExperimental setup. Legend: Set-up of the Q-Motor grip device (a) force transducers for measuring the grip forces of the thumb and/or index finger (here thumb), (b) the exchangeable weights (250 g or 500 g), and (c) the 3D position sensor for measuring involuntary movementsBack to article page