Electroretinograms reveal no evidence for centrifugal modulation of retinal inputs during selective attention in man.
Electroretinograms reveal no evidence for centrifugal modulation of retinal inputs during selective attention in man.
复制标题
视网膜电图没有显示人类选择性注意期间视网膜输入的离心调节的证据。
DOI：
10.1111/j.1469-8986.1986.tb00610.x
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发表时间：
1986
期刊：
影响因子：
3.7
通讯作者：
Hillyard,SA
中科院分区：
文献类型：
--
作者：
Mangun,GR;Hansen,JC;Hillyard,SA
Eason，奥克利，and Flowers（1983，Physiological Psychology，11，18-28）最近描述了在空间选择性注意期间人类视网膜电图（ERG）的B波和后电位的变化。这些结果表明，视网膜输入的离心调制可能在视觉注意中起作用。我们在两个实验中研究了这种效应，在这些实验中，受试者关注一个视觉半视野中的一系列闪光，而忽略另一半视野中的类似闪光。通过放置在眶周和头皮部位的电极记录视觉事件相关电位（ERP），同时使用接触右眼角膜巩膜表面的金箔电极记录ERG。选择性视觉注意力在头皮记录的视觉ERP的N150分量增强到被关注半场的闪光中是明显的。然而，未观察到注意力对ERG的B波或后电位的影响。在角膜巩膜记录中证明了与注意力相关的长潜伏期正移，并就容量传导脑活动进行了讨论。
Eason, Oakley, and Flowers (1983,Physiological Psychology, 11, 18–28) have recently described changes in the B‐wave and after‐potential of the human electroretinogram (ERG) during spatial selective attention. These results suggested that centrifugal modulation of retinal input may play a role in visual attention. We investigated this effect in two experiments in which subjects attended to sequences of flashes in one visual half‐field while ignoring similar flashes in the opposite half‐field. Visual event‐related potentials (ERPs) were recorded from electrodes placed at periorbital and scalp sites, while the ERG was simultaneously recorded using a gold‐foil electrode contacting the cornealscleral surface of the right eye. Selective visual attention was evident in an enhancement of the scalp‐recorded N150 component of the visual ERP to flashes in the attended half‐field. However, no effect of attention was observed on the B‐wave or after‐potential of the ERG. Long‐latency positive shifts related to attention were demonstrated in the corneal‐scleral recording and are discussed with respect to volume‐conducted brain activity.