■在目标导向的任务中,目标出现前的视觉提示可以让人提前做好准备,这有助于他们更好地完成运动,视觉提示的呈现类型非常重要。在以往的研究中,目前还不清楚不同类型的视觉提示如何在目标导向的任务中引导注意力。
■根据目标导向任务的特点,我们的研究设计了三种不同的提示:提示提示(具有静态箭头),准备提示(涉及动态倒计时),以及提示和准备信息的组合提示(同时包含箭头和倒计时)。我们使用脑功能连接下的事件相关电位成分(CNV和P300)和图论指标(聚类系数和特征路径长度)来分析大脑的注意力状态。
■结果表明,组合提示在提示阶段更好地引导了参与者\'持续的注意力,让他们为运动做好准备。因此,在目标出现之后,参与者有更好的执行控制,并实现了对目标的更快反应。然而,在组合提示下,参与者在提示阶段消耗了更多的注意力资源。
■我们认为,对于认知功能受损的参与者,提示提示或准备提示可以考虑,这也在引导参与者的注意力并帮助他们在消耗较少的注意力资源时进行运动准备方面发挥作用。这项研究为目标导向任务中视觉提示的设计提供了神经生理学和行为基础。
UNASSIGNED: In goal-directed tasks, visual prompts before the appearance of goals can make people ready in advance, which helps them to complete the movement better, and the presentation type of the visual prompt is very important. In previous studies, it has not been clear how different types of visual prompts guide attention in goal-directed tasks.
UNASSIGNED: According to the characteristics of goal-directed tasks, our research designed three different prompts: the cue prompt (featuring static arrow), the preparation prompt (involving dynamic countdown), and the combination prompt of cue and preparation information (simultaneously incorporating arrow and countdown). We used event-related potential components (CNV and P300) and graph theory indicators (clustering coefficient and characteristic path length) under the brain function connection to analyze the attention state of the brain.
UNASSIGNED: The results showed that the combination prompts better guided the participants\' sustained attention during the prompt stage, making them well prepared for the movement. Thus, after the target appeared, the participants had better executive control and achieved a faster response to the target. However, under the combination prompt, the participants consumed more attention resources during the prompt stage.
UNASSIGNED: We believe that for the participants with impaired cognitive function, cue prompts or preparation prompts can be considered, which also play a role in guiding the participants\' attention and helping them make motor preparations when less attention resources are consumed. This study provides a neurophysiological and behavioral foundation for the design of visual prompts in goal-directed tasks.