Article

The aim of this study was to analyze the cursor trajectories of adolescents
with cerebral palsy (CP) when using a mouse for point-and-click computer tasks.
By identifying some of the factors limiting cursor movement and gaining a better
understanding of human movement, it will be possible to design more accessible
computer interfaces. METHOD: This study evaluated cursor trajectories of 29
individuals with bilateral CP who had different levels of upper limb function as
measured by the Manual Ability Classification System, and compared the results
with those of 12 adolescents with typical development. RESULTS: Among adolescents
with typical development, movement time increases linearly as the index of
difficulty increases (Fitts' law); however, this linearity was not apparent in
adolescents with bilateral CP. INTERPRETATION: Interfaces for members of the
population are designed around Fitts' law, with low precision requirements at
indices of difficulty lower than 4. We found that interactive displays for
adolescents with CP should be limited to an index of difficulty of 2.
CI - (c) 2014 Mac Keith Press.

Langue : ANGLAIS