Click-Time Distribution

A statistical model of when a switch user activates their switch relative to a target timing event, used to characterize the precision and consistency of a user's motor control. In the Nomon interface, the click-time distribution measures how accurately a user clicks when a rotating clock hand passes noon, and this distribution is used by the system's Bayesian selection algorithm to determine the intended target. Users with narrower (more precise) distributions can make selections in fewer clicks, while those with wider distributions need more clicks for the system to build confidence in the correct selection.