<p>Posterior slow waves of youth are physiologically high-voltage theta or delta waves most commonly seen in children aged 8–14 years, but uncommon in children under 2 years. PSWYs&nbsp; occur in 15% of healthy individuals aged 16–20 years but are rare in
    adults above 21 years of age. These are slow theta and delta waves that are intermixed with alpha waves. They attenuate with eyes opening and they occur as sporadic single waves or as bursts of transient waves interspersed by one or several seconds
    or regular background activity. PSOY are usually bisynchronous but can have shifting symmetry (Stern 2005).<br></p>
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<p style="text-align: center;"><img src="@@PLUGINFILE@@/posterior-slow-waves-2n.png" alt="Posterior Slow Waves of Youth in a 2.5 year old male" width="625" height="604" class="img-responsive atto_image_button_text-bottom"><br></p>
<p>Figure : Posterior Slow Waves of Youth in a 2<sup>1/2</sup> year old male</p>