Abstract：
Joint attention is an indispensable tool for daily communication. Abnormalities in joint attention may be a key reason underlying social impairment in schizophrenia spectrum disorders. In this study, we aimed to explore the attentional orientation mechanism related to schizotypal traits in a social situation. Here, we employed a Posner cueing paradigm with social attentional cues. Subjects needed to detect the location of a target that is cued by gaze and head orientation. The power in the theta frequency band was used to examine the attentional process in the schizophrenia spectrum. There were four main findings. First, a significant association was found between schizotypal traits and attention orientation in response to invalid gaze cues. Second, individuals with schizotypal traits exhibited significant activation of neural oscillations and synchrony in the theta band, which correlated with their schizotypal tendencies. Third, neural oscillations and synchrony demonstrated a synergistic effect during social tasks, particularly when processing gaze cues. Finally, the relationship between schizotypal traits and attention orientation was mediated by neural oscillations and synchrony in the theta frequency band. These findings deepen our understanding of the impact of theta activity in schizotypal traits on joint attention and offer new insights for future intervention strategies.
摘要：
共同关注是日常交流不可或缺的工具。共同注意力异常可能是精神分裂症谱系障碍社会损害的关键原因。在这项研究中,我们旨在探索社会情境中与分裂型特征相关的注意取向机制。这里,我们采用了带有社会注意线索的波斯纳线索范式。受试者需要通过凝视和头部方向来检测目标的位置。theta频段的功率用于检查精神分裂症频谱中的注意过程。有四个主要发现。首先,在对无效凝视线索的反应中，分裂型特征与注意力取向之间存在显着关联。第二,具有分裂型性状的个体在θ带表现出神经振荡和同步性的显着激活，这与他们的分裂倾向有关。第三，神经振荡和同步性在社会任务中表现出协同作用，特别是在处理凝视线索时。最后,分裂型性状与注意力取向之间的关系是由theta频带中的神经振荡和同步性介导的。这些发现加深了我们对分裂型性状中θ活性对共同注意力的影响的理解，并为未来的干预策略提供了新的见解。
