Neural activity associated with attention orienting triggered by implied action cues
Neural activity associated with attention orienting triggered by implied action cues
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隐含动作线索触发的与注意力定向相关的神经活动
DOI：
10.1016/j.brainres.2016.04.018
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发表时间：
2016
期刊：
影响因子：
2.9
通讯作者：
Fu Xiaolan
中科院分区：
文献类型：
--
作者：
Li Kaiyun;Liu Yong-Jin;Qu Fangbing;Fu Xiaolan
空间注意力可以被他人的行为所引导。我们利用erp方法研究了由隐含的身体动作引起的注意定向的神经基础。参与者执行了一个标准的非预测性提示任务，在这个任务中，随机呈现一个方向暗示动作（投掷和奔跑）或非动作（站立）提示，然后在中央提示的左边或右边跟着一个目标，而不考虑提示的方向。线索触发的erp结果表明，暗示的动作线索比非动作线索更能转移观察者的空间注意，投掷和跑步线索的前向定向注意负性（ADAN）效应也证明了这一点。此外，早期的N1 （100-170 ms）和P2 （170-260 ms）波形差异出现在后电极暗示的动作和非动作线索之间。P2成分可能反映了被暗示动作线索的隐含动作信号知觉，这种隐含动作知觉可能在促进被暗示动作线索引起的注意转移中起重要作用。目标触发的erp数据（主要是P3a成分）表明，暗示动作提示（投掷和奔跑）提高了有效目标的反应速度，并增强了对无效目标的反应。此外，P3a可能暗示暗示行动定向可能与自愿注意具有相似的作用机制，特别是在新刺激加工决策层面。这些结果进一步支持了先前的行为研究结果，即隐含的身体动作引导空间注意力，并扩展了我们对由隐含动作线索引起的注意力转移本质的理解。
Spatial attention can be directed by the actions of others. We used ERPs method to investigate the neural underpins associated with attention orienting which is induced by implied body action. Participants performed a standard non-predictive cuing task, in which a directional implied action (throwing and running) or non-action (standing) cue was randomly presented and then followed by a target to the left or right of the central cue, despite cue direction. The cue-triggered ERPs results demonstrated that implied action cues, rather than the non-action cue, could shift the observers' spatial attention as demonstrated by the robust anterior directing attention negativity (ADAN) effects in throwing and running cues. Further, earlier N1 (100–170 ms) and P2 (170–260 ms) waveform differences occurred between implied action and non-action cues over posterior electrodes. The P2 component might reflect implied motion signal perception of implied action cues, and this implied motion perception might play an important role in facilitating the attentional shifts induced by implied action cues. Target-triggered ERPs data (mainly P3a component) indicated that implied action cues (throwing and running) speeded and enhanced the responses to valid targets compared to invalid targets. Furthermore, P3a might imply that implied action orienting may share similar mechanisms of action with voluntary attention, especially at the novel stimuli processing decision-level. These results further support previous behavioral findings that implied body actions direct spatial attention and extend our understanding about the nature of the attentional shifts that are elicited by implied action cues.