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<title>About BCI-BCI</title> //탭에다가 띄워지는 제목
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  <h1><a href="index.html">Brain Computer Interface</a></h1> //주제목,index.html로 링크걸어둠.
<ol> //ol 태그 작성해서 순서 부여
  <li><a href="1.html">BCI</a></li> //1.html로 링크 걸어둠.
  <li><a href="2.html">EEG</a></li> //2.html로 링크 걸어둠.
  <li><a href="3.html">Deep BCI</a></li> //3.html로 링크 걸어둠.
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<h2>BCI란 무엇인가?</h2> //소제목
<p>A <a href="https://en.wikipedia.org/wiki/Brain%E2%80%93computer_interface" title="About BCI_Wikipedia" target="_blank">brain-computer interface(BCI)</a>, sometimes called a neural-control interface(NCI), is <strong>a direct <u>communication</u> pathway </strong>between an enhanced or wired brain and an external device.</p>
<img src="brain.jpg" width="60%"> //이미지 추가
<p style="margin-top:80px;">BCI differs from neuromodulation in that it allows for biodirectional information flow. BCIs are often directed at researching, mapping, assisting, augmenting, or repairing human cognitive or sensory-motor functions.</p>
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