title: Quantifying Leg Movement Activity During Sleep.
abstract: 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.
authors.affiliation: Department of Neurology I.C., Sleep Research Centre, Oasi Institute for Research on Mental Retardation and Brain Aging (IRCCS), Via C. Ruggero, 73, Troina 94018, Italy. Electronic address: rferri@oasi.en.it.
authors.forename: Raffaele
authors.initials: R
authors.lastname: Ferri
authors.affiliation: Neurocenter of Southern Switzerland, Sleep and Epilepsy Center, Civic Hospital (EOC) of Lugano, Via Tesserete 46, Lugano 6903, Switzerland.
authors.forename: Stephany
authors.initials: S
authors.lastname: Fulda
mesh_terms: D005121:Extremities / Q000502:physiology*; D006801:Humans; D009068:Movement / Q000502:physiology*; D017286:Polysomnography / Q000379:methods*; D012890:Sleep / Q000502:physiology*
keywords: Alternating leg muscle activation; Excessive fragmentary myoclonus; High-frequency leg movements; Hypnagogic foot tremor; Periodic leg movements during sleep; Periodic leg movements during wakefulness