Flexible attention system: Appearance time of split attention changes in accordance with the task difficulty level
Flexible attention system: Appearance time of split attention changes in accordance with the task difficulty level
复制标题
灵活的注意力系统：分裂注意力的出现时间根据任务难度而变化
DOI：
10.3758/s13414-021-02386-y
复制
发表时间：
2021-11-24
影响因子：
1.7
通讯作者：
Zhang，Ming
中科院分区：
文献类型：
--
作者：
Zu，Guangyao;Sang，Hanbin;Zhang，Ming
虽然人们经常假设空间注意以单一焦点的形式存在，但分离注意假说认为，注意可以同时分为两个空间上不相邻的位置，并且可以忽略其间的空间。然而，分离注意力是直接基于注意力受益的产生，还是需要随着时间的推移逐渐从单一的关注中分离出来，这一点还没有得到澄清。在本研究中，我们通过使用两个空间显著线索来指导被试的注意分配，目的是调查注意是否需要时间来从单一焦点分离，以及分裂注意的出现时间是否随着实验之间任务难度水平的增加而变化。结果表明，注意从单一焦点中分离需要一定的时间，当刺激异步化(SOA)为60ms时，注意并不排除两个线索位置之间的位置。然而，随着实验间任务难度的增加，分散注意的出现时间提前。这些发现表明，分裂注意的出现时间具有一定的灵活性，并且可以根据任务要求而改变，这意味着分裂注意和单一注意存在一些共同的注意机制，注意系统可以灵活地选择分裂或单一模式。
Although it is often assumed that spatial attention exists in the form of a unitary focus, the split-attention hypothesis proposes that attention can be simultaneously divided into two spatially noncontiguous positions and that the space in between can be ignored. However, whether split attention occurs directly based on the generation of attentional benefit or whether it requires a gradual divide from a unitary focus over time has not been clarified. In the present study, by using two spatial salient cues to direct the attention allocation of participants, we aimed to investigate whether attention requires time to divide from a unitary focus and whether the appearance time of split attention varies when the task difficulty level increases between experiments. The results showed that attention required time to divide from a unitary focus, and the position between the two cued positions was not excluded by attention when the stimulus-onset asynchrony (SOA) was 60 ms. However, as the task difficulty increased between experiments, the appearance time of split attention was earlier. These findings suggest that the appearance time of split attention has a certain flexibility and can be changed according to the task requirement, thus implying that split attention and unitary attention present some common attention mechanisms and that a split or unitary mode can be flexibly selected for an attention system.