What is the morphology of EEG positive occipital sharp transients of sleep (POSTS)?

Updated: Oct 09, 2019
  • Author: Roy Sucholeiki, MD; Chief Editor: Selim R Benbadis, MD  more...
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Answer

Answer

Example of either lambda or positive occipital sha Example of either lambda or positive occipital sharp transients of sleep (POSTS).

See the list below:

  • POSTS are triangular waves that occur in the bilateral occipital regions as positive (upgoing) waves.

  • They can be multiple and usually are symmetric.

  • POSTS occur in sleeping patients and are said to be most evident in stage 2 of sleep, although they are not uncommon in stage 1.

  • POSTS are similar if not identical to lambda waves both morphologically and in the occipital distribution.


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