Li Yahui, You Yimeng, Yu Baobao, Lu Yue, Zhou Huilin, Tang Min, Zuo Guokun, Xu Jialin
Cixi Biomedical Research Institute, Wenzhou Medical University, Ningbo, Zhejiang, China.
Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, China.
Front Hum Neurosci. 2024 Jul 17;18:1397452. doi: 10.3389/fnhum.2024.1397452. eCollection 2024.
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.
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.
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.
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.
在目标导向任务中,目标出现前的视觉提示能让人们提前做好准备,有助于他们更好地完成动作,且视觉提示的呈现类型非常重要。在以往研究中,尚不清楚不同类型的视觉提示如何在目标导向任务中引导注意力。
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:线索提示(以静态箭头为特征)、准备提示(涉及动态倒计时)以及线索与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)以及图论指标(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能更好地引导参与者的持续注意力,使他们为动作做好充分准备。因此,在目标出现后,参与者具有更好的执行控制能力,并能对目标做出更快的反应。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,可以考虑使用线索提示或准备提示,它们在消耗较少注意力资源的情况下,也能起到引导参与者注意力并帮助他们进行动作准备的作用。本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学基础。