<p>Appearing in children, Positive Occipital Sharp Transients of Sleep (POSTS) are surface positive monophasic or diphasic waves are occipital in origin and synchronized, although they can be asymmetric between posterior electrode arrays. POSTS appear around age 5 years as the occipital delta of sleep begins to decrease (Yamada and Meng 2010). Transient and sharp in nature, they are high amplitude 4 to 5 Hz runs, lasting 1 to 2 seconds, and repeating every 4 to 6 seconds. They are seen during late N1 sleep stage and disappear with deep sleep.<br></p><p style="text-align: center;"><img src="@@PLUGINFILE@@/positive-occipital-sharp.png" alt="Positive Occipital Sharp Transients in a child drifting into NREM2 sleep" width="639" height="513" class="img-responsive atto_image_button_text-bottom"><br></p><p style="text-align: center;">Figure : Positive Occipital Sharp Transients in a child drifting into NREM2 sleep<br></p>