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type="text/css"></style> <div id="ct" class="ct2 wp cl"> <div class="mn"> <div class="bm_haa cl"> <div class="bm_h cl"> <a href="http://www.oecr.com/portal.php?mod=rss&catid=58" class="y xi2 rss" target="_blank" title="RSS">订阅</a><h1 class="xs2">文章</h1> </div></div> <div class="kjkjb"> <div class="bm vw" style="margin-bottom:0;"> <div class="h hm"> <div class="zxtoux"><img src="http://www.oecr.com/uc_server/avatar.php?uid=54876&size=small" /></div> <h1 class="ph">最新研究：人的思维成功破译并可读取 </h1> <p class="xg1"> 时间：2016-2-2 15:21<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(1567)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=3977&idtype=aid" title="查看全部评论"><em id="_commentnum">6</em></a></p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=58" class="y xi2 rss" target="_blank" title="RSS">订阅</a></div> </div> <!--[diy=diysummarytop]--><div id="diysummarytop" class="area"></div><!--[/diy]--> <div class="s"> <div class="ss"><div><span>导读： </span>来自华盛顿大学的研究人员称，可利用专门的电脑程序破译人的大脑信号。研究人员进行了一项实验，即通过植入癫痫病人颞叶的电极阵列，以接近大脑形成认知的速度破译其脑电图信号，进而准确判定特定时间段的视觉刺激图 ...</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content"><div style="text-align: center;"> <a href="data/attachment/portal/201602/02/152338jq0ubgwva0zhlbwv.jpg" target="_blank" style="line-height: 1.8em;"><img src="data/attachment/portal/201602/02/152338jq0ubgwva0zhlbwv.jpg"></a></div><div> 来自华盛顿大学的研究人员称，可利用专门的电脑程序破译人的大脑信号，研究人员进行了一项实验，即通过植入癫痫病人颞叶的电极阵列，以接近大脑形成认知的速度破译其脑电图信号，进而准确判定特定时间段的视觉刺激图像。实验中，研究人员让实验参与者观看计算机屏幕，屏幕会随机闪现图像，每幅图像<a href="http://display.oecr.com" target="_blank" class="relatedlink">显示</a>400毫秒。实验结果表明，科学家能成功判定志愿者所看到的图像，准确率达96%。</div><div> 在纸张上或者电脑屏幕上看到一个二维图像，然后将图像转换成我们的大脑可以立即识别的东西，这是一个神经系统的过程，这对科学家们来说仍然是非常神秘的。对此，他们做了非常多的努力。</div><div> 为了更加清楚的了解我们的大脑如何执行这项任务，并且对电脑能否收集和预测人们看到的东西进行研究，华盛顿大学的神经学家 Rajesh Rao 和神经外科医生 Jeff Ojermann 通过实验向外界证明，以接近人类感知的速度来解码人类大脑信号是可能做到的。他们的工作细节可以在 PLOS 计算机生物学中看到。</div><div> 该研究小组在 7 名接受治疗的癫痫患者的协助下进行了这个实验。药物并不能缓解癫痫发作，因此，这些患者被插上了临时大脑植入物，并用电极来精确定位他们癫痫发作的位置。研究人员认为这是一个完成实验的绝佳机会。</div><div> 然后，研究人员以 400 毫秒的时间间隔给这些患者看了一些随机图像，比如人脸、房屋和空白的灰色屏幕等等。他们的具体任务就是在这些图像中找到一个倒置的房子。同时，患者大脑中的电极还连接到了一个能够提取 2 个不同大脑信号的<a href="http://opticaldesign.oecr.com" target="_blank" class="relatedlink">软件</a>，即事件相关电位(同一个图像会引起大量的神经元响应)和宽频带光谱变化(看完一个图像之后的信号)。</div><div> 当图像在屏幕上闪烁的时候，计算机也没有闲着，它将信号数字化的速度为每秒 1000 次。在这样的情况下，软件能够确定患者看到某张图片时的电极位置和信号相关的最佳组合。Rajesh Rao 说：“我们从不同的电极位置得到了不同的反应，每个人对房子或者面孔的敏感度都不同。”</div><div> 完成软件训练之后，研究人员向患者展示了一组全新的照片。在没有实现接触过这些新照片的情况下，计算机能够以 96% 的准确率预测<a href="http://opticaltest.oecr.com" target="_blank" class="relatedlink">测试</a>对象看到的是房子、面孔还是灰色屏幕，其速度近乎跟人类感知的速度是一样的。</div><div> 需要提到的是，这项研究的结果是非常有限的。这个测试系统只有给它看了照片才能知道它能否学习更多不同类型的图片。举个例子，虽然计算机可以识别出脸孔，但是它并不能明显区分出那个脸孔是属于人的还是属于狗的。</div><div> 该实验是一个突破，这一技术或可帮助医学家实现与瘫痪病人进行交流，在读取人类思维方面具有非常重要的意义！</div><div style="text-align: center;"><p><a href="data/attachment/portal/201602/02/152059lzx7y7dxob0ql7by.jpg" target="_blank"><img src="data/attachment/portal/201602/02/152059lzx7y7dxob0ql7by.jpg"></a></p><p class="MsoNormal" style="text-align: center;"><span style="mso-spacerun:'yes';font-family:宋体;font-size:10.5000pt;mso-font-kerning:0.0000pt;">欢迎关注光电<a href="http://news.oecr.com" target="_blank" class="relatedlink">资讯</a>微信公众号，每天将由光电工程师<a href="http://club.oecr.com" target="_blank" class="relatedlink">社区</a>网站(oecr.com)编辑团队为您精选行业动态，科技资讯，技术解析，光电<a href="http://www.oecr.com/portal.php?mod=list&catid=62" target="_blank" class="relatedlink">科普</a>等精彩内容。 </span><span style="mso-spacerun:'yes';font-family:'Times New 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