Occipital TMS at phosphene detection threshold captures attention automatically

Occipital TMS at phosphene detection threshold captures attention automatically
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枕叶 TMS 在光幻视检测阈值自动吸引注意力

DOI:
10.1016/j.neuroimage.2015.01.035
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发表时间:
2015
期刊:
影响因子:
5.7
通讯作者:
Taylor
Taylor
中科院分区:
医学1区
文献类型:
--
作者:
Rangelov;Müller;Taylor

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强刺激可以自动捕获注意,这表明注意选择主要由物理刺激特性决定。捕获的机制仍然存在争议,特别是,前馈皮层下过程是否是其主要来源。此外,是否只有物理刺激性质决定捕获强度仍不清楚。在这里,我们通过使用经颅磁刺激(TMS)在枕部视觉皮层上作为注意提示,证明了在没有前馈输入的情况下,强捕获到皮层下结构,如上丘。这意味着通过下皮层的前馈扫描并不是捕获发生的必要条件,而是提供了一个额外的捕获源。此外,看到的线索比(物理上相同的)看不见的线索更能吸引注意力,这表明神经系统的瞬间状态调节了注意力选择。总之,我们证明了注意捕获的几种来源的存在,并且物理刺激特性和神经系统状态都影响捕获。
Strong stimuli may capture attention automatically, suggesting that attentional selection is determined primarily by physical stimulus properties. The mechanisms underlying capture remain controversial, in particular, whether feedforward subcortical processes are its main source. Also, it remains unclear whether only physical stimulus properties determine capture strength. Here, we demonstrate strong capture in the absence of feedforward input to subcortical structures such as the superior colliculus, by using transcranial magnetic stimulation (TMS) over occipital visual cortex as an attention cue. This implies that the feedforward sweep through subcortex is not necessary for capture to occur but rather provides an additional source of capture. Furthermore, seen cues captured attention more strongly than (physically identical) unseen cues, suggesting that the momentary state of the nervous system modulates attentional selection. In summary, we demonstrate the existence of several sources of attentional capture, and that both physical stimulus properties and the state of the nervous system influence capture.
单独的注意力成分调节早期视觉皮层的兴奋性
DOI: --
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