Differentiation of retinal and nonretinal contributions to averaged evoked responses obtained with electrodes placed near the eyes
Differentiation of retinal and nonretinal contributions to averaged evoked responses obtained with electrodes placed near the eyes
复制标题
区分视网膜和非视网膜对通过放置在眼睛附近的电极获得的平均诱发反应的贡献
DOI：
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发表时间：
1983
期刊：
影响因子：
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通讯作者：
M. Oakley
中科院分区：
文献类型：
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作者：
R. Eason;L. Flowers;M. Oakley
最近的视觉诱发电位（VEP）研究表明，在持续的自愿注意过程中，不相关或无人注意的视觉刺激可能会被皮层前过滤。要在人类身上验证这一假设，需要了解VEP中受选择性注意影响的特定成分的起源。本研究描述了区分vep的视网膜和非视网膜成分的技术和程序，这些成分是由放置在眼睛周围和前额的电极记录的。通过视觉刺激一只眼睛，同时从两只眼睛进行记录，以及通过刺激给定的视网膜区域，眼睛以不同的角度偏离注视线盯着目标，眼睛周围的vep成分可以区分为视网膜或非视网膜来源。用体积传导理论对结果进行了讨论。
Recent visual evoked potential (VEP) studies suggest that during sustained voluntary attention, irrelevant or unattended visual stimuli may be filtered precortically. Testing of this hypothesis in humans requires knowledge of the origin of specific components of the VEP that are affected by selective attention. This study describes techniques and procedures for distinguishing between retinal and nonretinal components of VEPs recorded from electrodes placed strategically around the eyes and on the forehead. By visually stimulating one eye at a time while recording simultaneously from both, and by stimulating a given retinal area with the eyes fixated on the target at different angular deviations from the normal line of regard, components of the VEPs around the eyes can be distinguished as of retinal or nonretinal origin. The results are discussed in terms of volume conduction theory.