Baidu
map

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

版权声明:
本网站所有内容来源注明为“梅斯医学”或“MedSci原创”的文字、图片和音视频资料,版权均属于梅斯医学所有。非经授权,任何媒体、网站或个人不得转载,授权转载时须注明来源为“梅斯医学”。其它来源的文章系转载文章,或“梅斯号”自媒体发布的文章,仅系出于传递更多信息之目的,本站仅负责审核内容合规,其内容不代表本站立场,本站不负责内容的准确性和版权。如果存在侵权、或不希望被转载的媒体或个人可与我们联系,我们将立即进行删除处理。
在此留言
评论区 (5)
#插入话题
  1. [GetPortalCommentsPageByObjectIdResponse(id=126718, encodeId=9ec9126e18a3, content=文章不错,值得拜读, beContent=null, objectType=article, channel=null, level=null, likeNumber=143, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzdAIB7UwTkHt6fQkBP8ictliaXtc5gCUmYdAW1sAETC2nhO3q6YjRHkUibyOCtP8ibmXNObTyd63A076/0, createdBy=d4111948983, createdName=1e10c84am36(暂无匿称), createdTime=Wed Sep 14 14:48:00 CST 2016, time=2016-09-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1767023, encodeId=f3991e6702330, content=<a href='/topic/show?id=64f5343e2f' target=_blank style='color:#2F92EE;'>#Biol#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=110, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3437, encryptionId=64f5343e2f, topicName=Biol)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=446937890434, createdName=12498ebem31暂无昵称, createdTime=Thu Apr 27 09:26:00 CST 2017, time=2017-04-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1917300, encodeId=de24191e30048, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=139, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Mon Nov 28 10:26:00 CST 2016, time=2016-11-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=95795, encodeId=0c8895e95b1, content=嗯,很神器, beContent=null, objectType=article, channel=null, level=null, likeNumber=159, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTInIuedI6ibt6I6oaCwaHVjGTt4ylhQ5Z3Mzpqw5t0yU9mtuRrLMUyjY3OPtRzDwibcWrZyeDAOqk3g/0, createdBy=f4971930340, createdName=lizedong88, createdTime=Thu Aug 04 00:07:00 CST 2016, time=2016-08-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=94080, encodeId=f11e9408013, content=先去读一下原文, beContent=null, objectType=article, channel=null, level=null, likeNumber=156, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160722/IMG5790F9B41222B2458.jpg, createdBy=3d0f1717183, createdName=man20025936, createdTime=Fri Jul 22 00:39:00 CST 2016, time=2016-07-22, status=1, ipAttribution=)]
    2016-09-14 1e10c84am36(暂无匿称)

    文章不错,值得拜读

    0

  2. [GetPortalCommentsPageByObjectIdResponse(id=126718, encodeId=9ec9126e18a3, content=文章不错,值得拜读, beContent=null, objectType=article, channel=null, level=null, likeNumber=143, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzdAIB7UwTkHt6fQkBP8ictliaXtc5gCUmYdAW1sAETC2nhO3q6YjRHkUibyOCtP8ibmXNObTyd63A076/0, createdBy=d4111948983, createdName=1e10c84am36(暂无匿称), createdTime=Wed Sep 14 14:48:00 CST 2016, time=2016-09-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1767023, encodeId=f3991e6702330, content=<a href='/topic/show?id=64f5343e2f' target=_blank style='color:#2F92EE;'>#Biol#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=110, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3437, encryptionId=64f5343e2f, topicName=Biol)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=446937890434, createdName=12498ebem31暂无昵称, createdTime=Thu Apr 27 09:26:00 CST 2017, time=2017-04-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1917300, encodeId=de24191e30048, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=139, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Mon Nov 28 10:26:00 CST 2016, time=2016-11-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=95795, encodeId=0c8895e95b1, content=嗯,很神器, beContent=null, objectType=article, channel=null, level=null, likeNumber=159, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTInIuedI6ibt6I6oaCwaHVjGTt4ylhQ5Z3Mzpqw5t0yU9mtuRrLMUyjY3OPtRzDwibcWrZyeDAOqk3g/0, createdBy=f4971930340, createdName=lizedong88, createdTime=Thu Aug 04 00:07:00 CST 2016, time=2016-08-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=94080, encodeId=f11e9408013, content=先去读一下原文, beContent=null, objectType=article, channel=null, level=null, likeNumber=156, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160722/IMG5790F9B41222B2458.jpg, createdBy=3d0f1717183, createdName=man20025936, createdTime=Fri Jul 22 00:39:00 CST 2016, time=2016-07-22, status=1, ipAttribution=)]
  3. [GetPortalCommentsPageByObjectIdResponse(id=126718, encodeId=9ec9126e18a3, content=文章不错,值得拜读, beContent=null, objectType=article, channel=null, level=null, likeNumber=143, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzdAIB7UwTkHt6fQkBP8ictliaXtc5gCUmYdAW1sAETC2nhO3q6YjRHkUibyOCtP8ibmXNObTyd63A076/0, createdBy=d4111948983, createdName=1e10c84am36(暂无匿称), createdTime=Wed Sep 14 14:48:00 CST 2016, time=2016-09-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1767023, encodeId=f3991e6702330, content=<a href='/topic/show?id=64f5343e2f' target=_blank style='color:#2F92EE;'>#Biol#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=110, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3437, encryptionId=64f5343e2f, topicName=Biol)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=446937890434, createdName=12498ebem31暂无昵称, createdTime=Thu Apr 27 09:26:00 CST 2017, time=2017-04-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1917300, encodeId=de24191e30048, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=139, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Mon Nov 28 10:26:00 CST 2016, time=2016-11-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=95795, encodeId=0c8895e95b1, content=嗯,很神器, beContent=null, objectType=article, channel=null, level=null, likeNumber=159, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTInIuedI6ibt6I6oaCwaHVjGTt4ylhQ5Z3Mzpqw5t0yU9mtuRrLMUyjY3OPtRzDwibcWrZyeDAOqk3g/0, createdBy=f4971930340, createdName=lizedong88, createdTime=Thu Aug 04 00:07:00 CST 2016, time=2016-08-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=94080, encodeId=f11e9408013, content=先去读一下原文, beContent=null, objectType=article, channel=null, level=null, likeNumber=156, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160722/IMG5790F9B41222B2458.jpg, createdBy=3d0f1717183, createdName=man20025936, createdTime=Fri Jul 22 00:39:00 CST 2016, time=2016-07-22, status=1, ipAttribution=)]
    2016-11-28 sunylz
  4. [GetPortalCommentsPageByObjectIdResponse(id=126718, encodeId=9ec9126e18a3, content=文章不错,值得拜读, beContent=null, objectType=article, channel=null, level=null, likeNumber=143, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzdAIB7UwTkHt6fQkBP8ictliaXtc5gCUmYdAW1sAETC2nhO3q6YjRHkUibyOCtP8ibmXNObTyd63A076/0, createdBy=d4111948983, createdName=1e10c84am36(暂无匿称), createdTime=Wed Sep 14 14:48:00 CST 2016, time=2016-09-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1767023, encodeId=f3991e6702330, content=<a href='/topic/show?id=64f5343e2f' target=_blank style='color:#2F92EE;'>#Biol#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=110, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3437, encryptionId=64f5343e2f, topicName=Biol)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=446937890434, createdName=12498ebem31暂无昵称, createdTime=Thu Apr 27 09:26:00 CST 2017, time=2017-04-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1917300, encodeId=de24191e30048, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=139, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Mon Nov 28 10:26:00 CST 2016, time=2016-11-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=95795, encodeId=0c8895e95b1, content=嗯,很神器, beContent=null, objectType=article, channel=null, level=null, likeNumber=159, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTInIuedI6ibt6I6oaCwaHVjGTt4ylhQ5Z3Mzpqw5t0yU9mtuRrLMUyjY3OPtRzDwibcWrZyeDAOqk3g/0, createdBy=f4971930340, createdName=lizedong88, createdTime=Thu Aug 04 00:07:00 CST 2016, time=2016-08-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=94080, encodeId=f11e9408013, content=先去读一下原文, beContent=null, objectType=article, channel=null, level=null, likeNumber=156, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160722/IMG5790F9B41222B2458.jpg, createdBy=3d0f1717183, createdName=man20025936, createdTime=Fri Jul 22 00:39:00 CST 2016, time=2016-07-22, status=1, ipAttribution=)]
    2016-08-04 lizedong88

    嗯,很神器

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=126718, encodeId=9ec9126e18a3, content=文章不错,值得拜读, beContent=null, objectType=article, channel=null, level=null, likeNumber=143, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzdAIB7UwTkHt6fQkBP8ictliaXtc5gCUmYdAW1sAETC2nhO3q6YjRHkUibyOCtP8ibmXNObTyd63A076/0, createdBy=d4111948983, createdName=1e10c84am36(暂无匿称), createdTime=Wed Sep 14 14:48:00 CST 2016, time=2016-09-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1767023, encodeId=f3991e6702330, content=<a href='/topic/show?id=64f5343e2f' target=_blank style='color:#2F92EE;'>#Biol#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=110, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3437, encryptionId=64f5343e2f, topicName=Biol)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=446937890434, createdName=12498ebem31暂无昵称, createdTime=Thu Apr 27 09:26:00 CST 2017, time=2017-04-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1917300, encodeId=de24191e30048, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=139, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Mon Nov 28 10:26:00 CST 2016, time=2016-11-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=95795, encodeId=0c8895e95b1, content=嗯,很神器, beContent=null, objectType=article, channel=null, level=null, likeNumber=159, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTInIuedI6ibt6I6oaCwaHVjGTt4ylhQ5Z3Mzpqw5t0yU9mtuRrLMUyjY3OPtRzDwibcWrZyeDAOqk3g/0, createdBy=f4971930340, createdName=lizedong88, createdTime=Thu Aug 04 00:07:00 CST 2016, time=2016-08-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=94080, encodeId=f11e9408013, content=先去读一下原文, beContent=null, objectType=article, channel=null, level=null, likeNumber=156, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160722/IMG5790F9B41222B2458.jpg, createdBy=3d0f1717183, createdName=man20025936, createdTime=Fri Jul 22 00:39:00 CST 2016, time=2016-07-22, status=1, ipAttribution=)]
    2016-07-22 man20025936

    先去读一下原文

    0

相关资讯

Sci Rep:咖啡可预防中枢性疲劳导致的视力问题

奥克兰大学的Nicholas Gant和同事发现,剧烈运动可以降低中枢神经系统的肌肉控制力,锻炼后出现的肌肉疼痛、出汗、脸红等表现并不是身体累了的标志,而是大脑疲劳的迹象。这种迹象在医学上称为"中枢性疲劳"。例如长时间骑自行车会导致民众出现中枢性疲劳,通常表现为双下肢无力。研究结果发表在Scientific Reports。 虽然众所周知中枢性疲劳影响机体运动功能,Gant博士和同事指出,目前尚不

BMJ:一例再生障碍性贫血,双眼急性无痛性视力下降

女性患者,患有再生障碍性贫血,双眼急性无痛性视力下降。 眼底检查显示,患者双眼视网膜静脉扩张,视网膜深浅层多个出血点、视网膜前出血,Roth斑点(中心白点网膜出血;箭头所指部位)。血红蛋白为30 g/L(参考值为120-158 g/L),白细胞总数3.5×109/L(3.5-9),血小板计数为16×109/L(165-415)。

NEJM:视力下降2月,间歇性头痛一例报道

男性,35岁,两个月前开始出现双眼视力下降。

JAMA Ophthalmol:增加视力筛查和早期干预可降低视力障碍患病率

有研究表明,到2050年非西班牙裔白人仍将是美国最大的视力障碍患病群体,而增加视力筛查、屈光不正和早期眼病的干预,将有助于降低视力障碍的患病率。该研究为以人群为基础的横断面研究,从六个主要以人群为基础失明和视觉障碍研究中,纳入了≥40岁的人群。数据显示,在美国2015年有102万人失明,近322万人有视力障碍。此外,在全国有820万人的视觉障碍是由于未矫正的屈光不正,估计整体视觉障碍患病率为2.1

西雅图视觉与眼科研究协会2016年年会:日本科学家首次让盲人重见光明

日本科学家说他们已经成功完成了世界上首例在人体上从皮肤到眼睛的干细胞移植:来自于患者皮肤的干细胞被移植到她的眼睛上,部分恢复了她失去的视力。这位70岁的女性患者被诊断为老年性黄斑变性,这是老年人视力障碍的首要原因。她在2014年开始接受预备实验。现在,移植两年之后,科学家们公布了结果。研究者们从她的手臂上取了一小块皮肤(直径4毫米),然后修改了它的干细胞,有效地将它们重新改编为诱导多能干细胞(iP

Cancer:视网膜母细胞瘤幸存者的视力和生活质量情况(随访42年)

发表在Cancer的一项新近研究针对青年时罹患视网膜母细胞瘤的民众进行了调查。 美国视网膜母细胞瘤患者的存活率非常高,5年存活率约为97%。然而,很少有人知道视网膜母细胞瘤患者未来的患病情况和幸福感。 由于既往关于视网膜母细胞瘤幸存者的晚年健康状况的相关研究样本量和范围有限,因此医务人员获得的相关知识非常有限。 纪念斯隆凯特林癌症中心的研究人员决定扩大样本量,以探究幸存者的生活质量及幸福感。视网膜

Baidu
map
Baidu
map
Baidu
map