Abstract Contemporary models of sensorimotor control contend that visually regulated movement adjustments may unfold early during a target-directed limb movement through an impulse control process that makes use of anticipatory forward models. To date, evidence surrounding impulse control has involved adjustments to a purported misperception in limb velocity following the unexpected onset of a moving background. That is, the limb is perceived to move faster and undershoots more when there is an incongruent moving background and vice versa. However, this particular behavior may manifest from an independent oculo-manual-following response. The present study aimed to deconstruct these proposals and, with them, the processes that underlie impulse control. Participants had to rapidly reach upward to land their index finger accurately on a target. On 33% of trials, the background, over which the movement was made, moved either up, down, right, or left. Displacements in the primary and perpendicular directions of movement showed spatial trajectories that were consistent with the directions of the moving backgrounds. This behavior was most prevalent in measurements taken at the movements’ peak negative acceleration and endpoints. Moreover, analysis of standardized displacements in the moving background conditions indicated no significant differences in the extent of the movements toward each of the moving backgrounds. These findings indicate that movement adjustments can manifest from an oculo-manual-following response rather than a misperception of limb velocity. We suggest that the anticipatory forward model that comprises impulse control may incorporate features of the environment that surround the vicinity of the limb.

中文翻译：

---

视网膜运动对目标定向瞄准脉冲控制的贡献

摘要当代感觉运动控制模型认为，视觉调节的运动调整可能会在目标导向的肢体运动期间通过利用预期前向模型的脉冲控制过程早期展开。迄今为止，围绕冲动控制的证据涉及在运动背景意外开始后对肢体速度的所谓误解进行调整。也就是说，当存在不一致的移动背景时，肢体被认为移动得更快并且下冲更多，反之亦然。然而，这种特殊行为可能会从独立的眼手动跟随反应中体现出来。本研究旨在解构这些建议，以及与它们一起构成冲动控制的过程。参与者必须迅速向上伸手才能将食指准确地放在目标上。在 33% 的试验中，进行移动的背景向上、向下、向右或向左移动。主要和垂直运动方向的位移显示出与运动背景方向一致的空间轨迹。这种行为在运动的峰值负加速度和端点处进行的测量中最为普遍。此外，对移动背景条件下标准化位移的分析表明，朝向每个移动背景的移动程度没有显着差异。这些发现表明，运动调整可以通过眼手动跟随反应来体现，而不是对肢体速度的误解。