Scaling behavior in measured keystroke time series from patients with Parkinson’s disease Ata Madanchi, Fatemeh Taghavi-Shahri, Seyed Mahmood Taghavi-Shahri and Mohammed Reza Rahimi Tabar Eur. Phys. J. B, 93 7 (2020) 126 Published online: 01 July 2020 DOI: 10.1140/epjb/e2020-100561-4