电视系统诱发的50赫兹皮层电位干扰。
Interference of 50 Hz electrical cortical potentials evoked by TV systems.
作者信息
van Lith G H, van Marle G W, Vijfvinkel-Bruinenga S
出版信息
Br J Ophthalmol. 1979 Nov;63(11):779-81. doi: 10.1136/bjo.63.11.779.
Abstract
Application of TV systems for generating patterned stimuli for the examination of the electrical cortical potentials has disadvantages caused by the frame frequency of 50 Hz of TV sets. Apart from a larger variability in latency times of the electrical potentials as compared to the results obtained by projector systems, a 50-Hz noise on the recordings mediated through the visual system may be seen. These disadvantages can be ameliorated by increasing the frame frequency of the TV set.
摘要
将电视系统应用于生成用于检测皮层电位的图案化刺激存在一些缺点，这些缺点是由电视机50赫兹的帧频导致的。与投影仪系统所获得的结果相比，除了电位潜伏期的变异性更大之外，还可能在通过视觉系统介导的记录中看到50赫兹的噪声。通过提高电视机的帧频，这些缺点可以得到改善。
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本文引用的文献
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Variation in latency times of visually evoked cortical potentials.视觉诱发皮层电位潜伏期的变化。
Br J Ophthalmol. 1978 Apr;62(4):220-2. doi: 10.1136/bjo.62.4.220.
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