Action-driven attentional recruitment

越来越多的证据表明，视觉选择可以由行为驱动，特别是那些由我们的手编程和实现的行为。注意力受手的位置影响；它被部署到计划进行手部运动的位置，并受手部姿势和手部动作（例如，指向或抓取）的影响。大多数探索手动作和视觉感知之间相互作用的研究通常集中在离散端点运动或静态手姿势的研究上。然而，在日常的动作情境中，通常情况下，动作目标的选择是在手在运动的时候进行的，要么仍然与之前的目标互动，要么在获取下一个目标的过程中扫过空间。因此，我们提出了一项研究，探讨持续运动和手部姿势的动态变化对视觉注意分配的影响。歧视探针将在手动工作空间中呈现，并将测量其处理。这种方法将允许我们检查在运动计划和程序化动作中驱动注意力的相同机制在运动期间是否也活跃，并调查与手动动作一致的视觉选择的时间过程。此外，采用各种视觉任务和条件将使我们能够研究这种行动驱动的注意力分配的性质。因此，我们将辨别这种分配是否具有短暂或持续的特征，以及它是由内源性（运动规划）还是外源性线索（例如，与手部姿势和运动相关的本体感觉输入）控制的。由此，本研究为身体图式、运动计划、动作执行和视觉加工之间的相互作用提供了新的信息。

There is increasing evidence that visual selection can be driven by actions, in particular by those which are programmed and achieved with our hands. Attention is affected by hand placement; it is deployed toward locations for which hand movements are planned and is affected by hand posture and hand action (e.g., pointing or grasping). Most research exploring the interaction between manual action and visual perception has generally focused on the study of discrete end-point movements or static hand postures. However, in everyday action situations it is often the case that the target for action is chosen while the hands are in motion, either still interacting with a previous target or sweeping across space during acquisition of the next target. We therefore propose a study that explores such effects of continuous motion and dynamic change of hand posture on the allocation of visual attention. Discrimination probes will be presented across the manual workspace and their processing will be measured. This approach will allow us to examine whether the same mechanisms that drive attention in movement planning and programmed action are also active during the motion period, and to investigate the time course of visual selection in accordance with manual action. In addition, employing various visual tasks and conditions will allow us to study the nature of this action-driven attention allocation. Hence, we will discern whether such allocation has transient or sustained characteristics and whether it is controlled by endogenous (motor planning) or exogenous cues (e.g., proprioceptive input related to the posture and movement of the hand). In this way, the study provides new information about the crosstalk between body schema, motor planning, action execution, and visual processing.