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<p>Drowsiness is difficult to see for the untrained eye and would not classify as artifact, however it is data that must be thrown out, unless the quality of someone’s sleep or how quickly they fall asleep are being monitored. In this video, within one minute
    of closing his eyes, this patient falls asleep, generating beta spindles, high amplitude alpha, K-complexes down the vertex, and low amplitude beta.</p>
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<div><img src="@@PLUGINFILE@@/linkears-7.png?time=1564143083126" alt="" role="presentation" class="img-responsive atto_image_button_text-bottom" width="713" height="954"></div>
<p><i>Image 1t: The drowsy EEG was showing vertex slow waves and frontal spindling beta (aka sleep spindles), which show up in a fast fourier transform as high amplitude central theta and high amplitude frontal beta. Image generated from Neuroguide version 3.0.6.</i></p>
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<p style="text-align:center"><iframe src="https://player.vimeo.com/video/358115118" width="640" height="390" frameborder="0" allow="autoplay; fullscreen" allowfullscreen=""></iframe></p>
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