Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9348598 | Vision Research | 2005 | 12 Pages |
Abstract
Position and velocity of accommodation are known to increase with stimulus magnitude, however, little is known about acceleration properties. We investigated three acceleration properties: peak acceleration, time-to-peak acceleration and total duration of acceleration to step changes in defocus. Peak velocity and total duration of acceleration increased with response magnitude. Peak acceleration and time-to-peak acceleration remained independent of response magnitude. Independent first-order and second-order dynamic components of accommodation demonstrate that neural control of accommodation has an initial open-loop component that is independent of response magnitude and a closed-loop component that increases with response magnitude.
Keywords
Related Topics
Life Sciences
Neuroscience
Sensory Systems
Authors
Shrikant R. Bharadwaj, Clifton M. Schor,