摘要：Non-informative spatial cues presented prior to a goal-directed movement influence not only movement initiationtime but also the spatial characteristics of the movement trajectories. These trajectory effects are thought to stem froman integration of competing motor responses. In the present experiments, trajectories of rapid aiming movements were examinedunder the constraints of a cue-target inhibition of return (IOR) paradigm. Aiming movements were made to targetsthat were preceded by a cue stimulus in the same or different location. Four experiments were conducted in which themodality of the cue and target stimulus was manipulated across vision and audition. Although facilitation effects werepresent under the cross modality protocols, IOR effects were observed only for same cue-target pairings. At short stimulusonset asynchronies, limb trajectories deviated toward the target that had just been cued, particularly when the cue occurredin left space. These trajectory effects are consistent with response activation models of selective attention and movementpreparation.
