This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Moved sleep spindle after K-complex. The original can be viewed here: Stage2sleep.svg: . Modifications made by Neocadre.
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This image is a derivative work of the following images:
{{Information |Description={{en|A fictional EEG showing a sleep spindle and K-complex in stage 2 sleep.<br/> Converted Image:Stage2sleep.png to SVG}} |Source=*[[:File:Stage2sleep.svg|]