Figure 1
From: Arrhythmokinesis is evident during unimanual not bimanual finger tapping in Parkinson’s disease
Data acquisition on customized engineered keyboard. Index and middle finger placement on the engineered keyboard for A: unimanual, repetitive alternating finger tapping (AFT) and B: repetitive single finger, alternating hand tapping (SFT). C: schematic diagram of key displacement zones. LZ = linear zone, NLZ = Non-linear zone, D: higher magnification diagram of the key displacement epochs, ISI = inter-strike interval.