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Large-scale brain networks underlying non-spatial attention updating: Towards understanding the function of the temporoparietal junction
Cortex ( IF 3.6 ) Pub Date : 2020-10-10 , DOI: 10.1016/j.cortex.2020.09.023
Katarzyna Jurewicz 1 , Katarzyna Paluch 1 , Tomasz Wolak 2 , Andrzej Wróbel 3
Affiliation  

The temporoparietal junction (TPJ) and related areas are activated when a target stimulus appears at unexpected locations in Posner's spatial-cueing paradigm, and also when deviant stimuli are presented within a series of standard events in oddball paradigms. This type of activation corresponds to the ventral attention network (VAN), for regions defined on the basis of the spatial task. However, involvement of the VAN in object-based updating of attention has rarely been examined. In the present study, we used functional magnetic resonance imaging to investigate brain responses to (i) invalid targets after category-cueing and (ii) neutrally cued targets deviating in category from the background series of pictures. Bilateral TPJ activation was observed in response to invalidly cued targets, as compared to neutrally cued targets. Reference to the main large-scale brain networks showed that peaks of this activation located in the angular gyrus and inferior parietal lobule belonged to the default mode (DMN) and fronto-parietal networks (FPN), respectively. We found that VAN regions were involved only for simple detection activity. We conclude that spatial and non-spatial reorienting of attention rely on different network underpinnings. Our data suggest that DMN and FPN activity may support the ability to disengage from contextually irrelevant information.



中文翻译:

非空间注意更新基础的大规模脑网络:旨在了解颞顶交界处的功能

当目标刺激出现在Posner空间提示范式中的意外位置时,以及当异球范式中的一系列标准事件中出现异常刺激时,颞顶接合部(TPJ)和相关区域也会被激活。对于基于空间任务定义的区域,这种类型的激活对应于腹侧注意网络(VAN)。但是,很少检查VAN在基于对象的注意更新中的参与。在本研究中,我们使用功能磁共振成像来研究大脑对(i)类别提示后无效目标和(ii)中性提示目标偏离背景图片系列的目标的反应。与中性提示的目标相比,观察到对无效提示的目标有反应的双边TPJ激活。对主要的大型脑网络的参考表明,位于角回和顶下小叶的这种激活的峰值分别属于默认模式(DMN)和额顶网络(FPN)。我们发现VAN区域仅涉及简单的检测活动。我们得出结论,注意力的空间和非空间重新定向依赖于不同的网络基础。我们的数据表明,DMN和FPN活动可能支持脱离上下文无关信息的能力。我们得出结论,注意力的空间和非空间重新定向依赖于不同的网络基础。我们的数据表明,DMN和FPN活动可能支持脱离上下文无关信息的能力。我们得出结论,注意力的空间和非空间重新定向依赖于不同的网络基础。我们的数据表明,DMN和FPN活动可能支持脱离上下文无关信息的能力。

更新日期:2020-11-03
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