Quantifying Leg Movement Activity During Sleep

Raffaele Ferri, Stephany Fulda

Research output: Contribution to journalReview articlepeer-review


Currently, 2 sets of similar rules for recording and scoring leg movement (LM) exist, including periodic LM during sleep (PLMS) and periodic LM during wakefulness. The former were published in 2006 by a task force of the International Restless Legs Syndrome Study Group, and the second in 2007 by the American Academy of Sleep Medicine. This article reviews the basic recording methods, scoring rules, and computer-based programs for PLMS. Less frequent LM activities, such as alternating leg muscle activation, hypnagogic foot tremor, high-frequency LMs, and excessive fragmentary myoclonus are briefly described.

Original languageEnglish
Pages (from-to)413-420
Number of pages8
JournalSleep Medicine Clinics
Issue number4
Publication statusPublished - Dec 2016


  • Journal Article
  • Review


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