Parkinson's Disease Motor Recovery from Typing Errors Studied via Keystroke Dynamics

Researchers conducted an analysis using the neuroQWERTY MIT-CSXPD dataset, examining keystroke dynamics from 57 participants, including 27 individuals diagnosed with Parkinson's disease and their UPDRS-III scores. The study aimed to differentiate between error monitoring and motor restart following typing mistakes. By considering backspace events as natural instances of error correction, findings indicated no significant difference in pre-error keystroke instability across varying disease severities (r=0.164, p=0.413). However, there was substantial evidence that post-error recovery times varied significantly, modeled as a continuous accelerated failure time survival outcome (p<10^-9 in both sub-cohorts; permutation p<0.0033; bootstrap 95% CI excluding zero). The two measures showed no correlation (r=-0.065), with only post-error recovery time being significant in a joint model. This study implies that passively gathered keystroke dynamics can differentiate between motor and cognitive control stages impacted by Parkinson's disease.