The effect of vestibular stimulation in a four-hour sleep phase advance model of transient insomnia

Andrew D. Krystal, Gary K. Zammit, James K. Wyatt, Stuart F. Quan, Jack D. Edinger, David P. White, Richard P. Chiacchierini, Atul Malhotra

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

Study Objectives: To determine if vestibular stimulation is an effective therapy for transient insomnia in a sleep phase advance model. Design: Multi-site, double-blind, randomized, parallel-group, sham-controlled trial Setting: This study was carried out at 6 sites in the United States. Participants: 198 healthy normal sleepers. Interventions: Bilateral electrical stimulation of the vestibular apparatus of the inner ear via electrodes on the skin of the mastoid process at a frequency of 0.5 Hz vs. sham stimulation Results: We did not find a significant effect of treatment on our primary outcome variable, latency to persistent sleep onset (LPS). However, our planned analysis identified that the mean latency to sleep onset on the multiple sleep latency test was a significant covariate. This led us to carry out post hoc analyses, which showed a significant effect of treatment on LPS in those subjects with a mean MSLT sleep onset latency ≥ 14 minutes. Conclusions: Vestibular stimulation did not have a therapeutic effect in a model of transient insomnia in the overall population studied. However, this study provides preliminary evidence that vestibular stimulation may shorten sleep onset latency compared with sham therapy in the subset of subjects with mean MSLT sleep onset latency ≥ 14 minutes.

Original languageEnglish (US)
Pages (from-to)315-321
Number of pages7
JournalJournal of Clinical Sleep Medicine
Volume6
Issue number4
DOIs
StatePublished - Aug 15 2010

Keywords

  • Sleep phase advance
  • Transient insomnia
  • Vestibular stimulation

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine
  • Neurology
  • Clinical Neurology

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