Garza John P, Reed Catherine L, Roberts Ralph J
University of Texas at El Paso, El Paso, USA.
Department of Psychology, Claremont McKenna College, Claremont Graduate University, Claremont, USA.
Exp Brain Res. 2018 Oct;236(10):2603-2610. doi: 10.1007/s00221-018-5307-2. Epub 2018 Jun 29.
Recent studies have documented that the hand's ability to perform actions affects the visual processing and attention for objects near the hand, suggesting that actions may have specific effects on visual orienting. However, most research on the relation between spatial attention and action focuses on actions as responses to visual attention manipulations. The current study examines visual attention immediately following an executed or imagined action. A modified spatial cuing paradigm tested whether a brief, lateralized hand-pinch performed by a visually hidden hand near the target location, facilitated or inhibited subsequent visual target detection. Conditions in which hand-pinches were fully executed (action) were compared to ones with no hand-pinch (inaction) in Experiment 1 and imagined pinches (imagine) in Experiment 2. Results from Experiment 1 indicated that performed hand pinches facilitated rather than inhibited subsequent detection responses to targets appearing near the pinch, but target detection was not affected by inaction. In Experiment 2, both action and imagined action conditions cued attention and facilitated responses, but along differing time courses. These results highlight the ongoing nature of visual attention and demonstrate how it is deployed to locations even following actions.
最近的研究表明，手执行动作的能力会影响对手附近物体的视觉处理和注意力，这表明动作可能对视觉定向有特定影响。然而，大多数关于空间注意力与动作之间关系的研究都集中在作为对视觉注意力操纵的反应的动作上。当前的研究考察了在执行或想象一个动作之后立即出现的视觉注意力。一种经过修改的空间线索范式测试了由视觉上隐藏的手在目标位置附近执行的短暂的、向一侧的捏取动作是否促进或抑制了随后的视觉目标检测。在实验1中，将完全执行捏取动作的情况（动作）与没有捏取动作的情况（无动作）进行比较，在实验2中，将其与想象中的捏取动作（想象）进行比较。实验1的结果表明，执行的捏取动作促进而不是抑制了对出现在捏取动作附近的目标的后续检测反应，但目标检测不受无动作情况的影响。在实验2中，动作和想象动作条件都引导了注意力并促进了反应，但时间进程不同。这些结果突出了视觉注意力的持续性，并证明了即使在动作之后，它是如何被部署到各个位置的。
