use MSLT to diagnose narcolepsy and hypersomnia


  • multiple sleep latency test
  • take 4-5 daytime naps about 2 hours apart
  • measure how long takes to fall asleep
  • if not fall asleep in 20 minutes: sleep latency 20 min
  • if fall asleep: record brain activity for 15 min to see if reach REM
  • < 8 min latency: could be narcolepsy, and more likely to enter REM
  • idiopathic: less than 8 min latency but less likely to enter REM

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Footnotes

  1. https://www.sleepfoundation.org/how-sleep-works/sleep-latency