The influence of visual target and limb information on manual aiming.

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Abstract
Two experiments were conducted to determine the impact of visual target information, visual limb information, and a no vision target-pointing delay on manual aiming accuracy. Contrary to the findings of Carlton (1981), visual target information was more important than limb information in determining movement accuracy. The no vision target-pointing delay manipulations demonstrated that it was not necessary for target information to be physically present, since a visual representation of the movement environment persists for a brief period (< 2 s) after visual occlusion. The implications of these findings for closed-loop models of movement control are discussed.

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