Visual salience dominates early visuomotor competition in reaching behavior.
Visual salience dominates early visuomotor competition in reaching behavior.
复制标题
视觉显着性在早期视觉运动竞争中占主导地位。
作者：
Daniel K Wood;J. Gallivan;Craig S. Chapman;Jennifer L. Milne;J. Culham;M. Goodale
在这项研究中，我们调查了视觉显著是否影响潜在目标之间的竞争在覆盖规划中。参与者开始快速指向多个潜在目标，最终目标只有在伸展开始后才会被提示。我们通过改变潜在目标的亮度来操纵视觉突显。通过两个单独的实验，我们证明了最初的到达轨迹指向更突出的目标，即使在空间的另一边有两倍的目标(因此最终目标出现的可能性是两倍)。我们还表明，这种显著偏差是时间相关的，当参与者在提示移动之前被给予额外的500毫秒的目标显示预览时，空间平均到达轨迹的回归就是明证。这项研究显示了与任务无关的亮度差异何时以及在多大程度上影响了到达多个潜在目标的计划。
In this study, we investigated whether visual salience influences the competition between potential targets during reach planning. Participants initiated rapid pointing movements toward multiple potential targets, with the final target being cued only after the reach was initiated. We manipulated visual salience by varying the luminance of potential targets. Across two separate experiments, we demonstrate that initial reach trajectories are directed toward more salient targets, even when there are twice as many targets (and therefore twice the likelihood of the final target appearing) on the opposite side of space. We also show that this salience bias is time-dependent, as evidenced by the return of spatially averaged reach trajectories when participants were given an additional 500-ms preview of the target display prior to the cue to move. This study shows both when and to what extent task-irrelevant luminance differences affect the planning of reaches to multiple potential targets.
DOI：
10.1364/josaa.26.0000b1
发表时间：
2009-11-01
影响因子：
1.9
作者：
Stritzke, Martin;Trommershaeuser, Julia;Gegenfurtner, Karl R.
通讯作者：
Gegenfurtner, Karl R.
DOI：
10.1037/0096-1523.25.3.661
发表时间：
1999-06-01
影响因子：
2.1
作者：
Yantis, S;Egeth, HE
通讯作者：
Egeth, HE