Curr Biol:电一电就能提高视力 但不要随意尝试哦!

2016-07-11 佚名 生物谷

最近,来自美国范德堡大学的研究人员在国际学术期刊Current Biology上发表了一项最新研究,他们通过微电流对参与者的大脑视觉皮层进行了20分钟刺激,发现能够提高参与者视力,持续大约两个小时,并且视力越差提高越明显。研究人员招募了20个年轻健康参与者,他们的视力都处于正常或接近正常的水平,随后要求他们判断两条完全相同的垂直直线的相对位置,以此检测他们的视力水平,这种检测方法比标注视力表更加灵

最近,来自美国范德堡大学的研究人员在国际学术期刊Current Biology上发表了一项最新研究,他们通过微电流对参与者的大脑视觉皮层进行了20分钟刺激,发现能够提高参与者视力,持续大约两个小时,并且视力越差提高越明显。

研究人员招募了20个年轻健康参与者,他们的视力都处于正常或接近正常的水平,随后要求他们判断两条完全相同的垂直直线的相对位置,以此检测他们的视力水平,这种检测方法比标注视力表更加灵敏,同时能够告诉研究人员每个参与者的视觉灵敏度。

研究人员对参与者大脑负责视觉信息处理的区域进行了微电流刺激,20分钟之后再对参与者进行视力水平检测,其中大约75%的参与者表现出可检测到的视力提高。在该实验中研究人员对不同电流强度,电流方向和电极位置进行了多次测试,除此之外他们还检测了电流刺激如何改变大脑处理视觉信息的速度以及这种刺激能否提高参与者的对比敏感度——对不同级别灰度的区分能力。

研究结果表明只有参与者的视觉灵敏度受到了微电流刺激的影响,而对比敏感度并未受到影响,文章作者表示这项研究的结果对未来基础科学研究提供了一些非常有趣的启示。

最后研究人员还对微电流刺激产生的视觉灵敏度变化是否能够在标准视力表测试上得到证明进行了实验观察,他们发现微电流刺激产生的影响能够提高参与者的视力,平均提高1到2个字母,不过参与者之间的差异也比较明显。“我们注意到那些视力更差的参与者经过微电流刺激以后视力提高最明显,而视力特别好的人则基本不会有什么变化。”

研究人员推测,微电流可能只是简单地促进了特定神经元对视觉信号的处理过程,使其变得更快,也有可能是电流将白色噪音加入到了视觉系统,掩盖了一些无关信息,让大脑能够更加轻松地捕捉到视觉信息。研究人员还表示,还需要更多临床研究对这种方法的安全性进行验证,同时提醒公众千万不要在家里尝试重复这个实验。

原始出处

Robert M.G. Reinhart1, Wenxi Xiao2, Laura J. McClenahan2, Geoffrey F. Woodman.Electrical Stimulation of Visual Cortex Can Immediately Improve Spatial Vision.Curr Biol.2016

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    2016-09-14 1e10c84am36(暂无匿称)

    文章不错,值得拜读

    0

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    2016-11-28 sunylz
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    2016-08-04 lizedong88

    嗯,很神器

    0

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    2016-07-22 man20025936

    先去读一下原文

    0

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