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Updated: Apr 9, 2026

Optogenetic Manipulation of Neural Circuits During Monitoring Sleep/wakefulness States in Mice
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Consensus roadmap on periodic leg movements during sleep: outcomes of the international PLMS taskforce.

Stephany Fulda1, Mathias Baumert2, Matteo Cesari3

  • 1Sleep Medicine Unit, Neurocenter of Southern Switzerland, Civic Hospital of Lugano (EOC), Lugano, Switzerland.

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Summary

Periodic leg movements during sleep (PLMS) are common but their clinical importance is unclear. This roadmap proposes standardized methods for evaluating PLMS, emphasizing their spectrum of activity and variable impact.

Keywords:
PLMS scoring standardscardiovascular comorbiditylongitudinal monitoringperiodic leg movements during sleeptranslational sleep researchwearable sleep technology

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Area of Science:

  • Sleep Medicine
  • Neurophysiology
  • Clinical Research

Background:

  • Periodic leg movements during sleep (PLMS) are frequently observed but lack clear biological meaning and clinical relevance.
  • Current evaluation and tabulation methods for PLMS are uncertain, hindering consistent research and clinical application.

Purpose of the Study:

  • To address gaps in understanding and evaluating PLMS by proposing a research roadmap.
  • To establish a consensus on the clinical significance, measurement, treatment, and research of PLMS.

Main Methods:

  • An international, multidisciplinary taskforce convened online and in-person meetings.
  • Conclusions were reached through iterative qualitative discussion, focusing on five priority domains.

Main Results:

  • The taskforce summarized conclusions across five domains: clinical significance, measurement, treatment, basic research, and epidemiology.
  • A central theme is viewing PLMS as a spectrum of sleep-related motor activity, not just a count.

Conclusions:

  • Advancing PLMS research requires harmonized scoring, validated technologies, longitudinal studies, and international collaboration.
  • This roadmap provides a framework for research and guideline development, moving beyond PLMS as a simple index.