Fig. 2

Example psychophysics curves from an individual from each cohort. (A) Data from example healthy subject. (B) Data from example IPD subject. (C) Data from example MCI subject. Shaded areas indicate the range of angles for which the probability of using a Grasp 2 posture over Grasp 1 is between 25 and 75%, yielding the measure ‘Halfwidth’. IPD, idiopathic Parkinson’s disease; MCI, mild cognitive impairment.