Fig. 7: An example showing continuous assessment of resting tremor and bradykinesia using accelerometer data from a device worn on the most affected wrist. | npj Digital Medicine

Fig. 7: An example showing continuous assessment of resting tremor and bradykinesia using accelerometer data from a device worn on the most affected wrist.

From: Development of digital biomarkers for resting tremor and bradykinesia using a wrist-worn wearable device

Fig. 7

Data was collected on one PD patient across two in-lab visits. The first visit was in the OFF state and second visit in the ON state. a Continuous tremor detection and tremor amplitude measurement in the OFF (left panel) and ON (right panel) state. Inset shows aggregate measures of tremor constancy and tremor amplitude. Tremor constancy was rated 3 in the OFF state and 1 in the ON state. Tremor amplitude was rated 2 in the OFF and 0 in the ON. b Continuous hand movement detection and hand amplitude measurement in the OFF (left panel) and ON (right panel) state. Inset shows aggregate measures of hand movement amplitude and length of no hand movement bouts. Hand bradykinesia was rated 9 in the OFF state and 2 in the ON state.

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