POSTS stands for which sleep-related EEG finding?

• A. Positive Occipital Sharp Transients of Sleep
• B. Post Occipital Sharp Transients of Sleep
• C. Positive Occipital Sharp Transients During Sleep
• D. Post Occipital Sharp Transients of Sleep

Answer: (B)

POSTS stands for Post Occipital Sharp Transients of Sleep. These are brief, sharp waves seen in the occipital leads during sleep, most often in light non-REM sleep, with a posterior distribution. They are a benign sleep-EEG variant and help distinguish normal posterior sharp transients from epileptiform activity. The naming convention used here uses “Post” rather than “Positive,” and this exact phrasing is the standard expansion for this acronym.