Explanation of Fitts' law in Reaching Movement based on Human Arm Dynamics.

ABSTRACT: Why does Fitts' law fit various human behavioural data well even though it is not a model based on human physical dynamics? To clarify this, we derived the relationships among the factors applied in Fitts' law-movement duration and spatial endpoint error-based on a multi-joint forward- and inverse-dynamics models in the presence of signal-dependent noise. As a result, the relationship between them was modelled as an inverse proportion. To validate whether the endpoint error calculated by the model can represent the endpoint error of actual movements, we conducted a behavioural experiment in which centre-out reaching movements were performed under temporal constraints in four directions using the shoulder and elbow joints. The result showed that the distributions of model endpoint error clo

SUBMITTER: Takeda M 

PROVIDER: S-EPMC6930222 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature