The Effect of Pre-Frontal tDCS on Sleep Propensity During an Afternoon Nap: RCT
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Description détaillée
Recent studies have demonstrated that there are cortical direct current (DC) changes that accompany sleep onset and transitions between sleep states in a stereotyped manner. In these studies it was determined that negative potential shifts occurred prior to and at the transition from wakefulness to sleep and at transitions between Rapid Eye Movement sleep (REM) sleep, and Non-Rapid Eye Movement (NREM) sleep. In a subset of experiments it was demonstrated that the same DC potential shifts occur during the transition from wake to sleep in an afternoon nap. The recorded DC potential shifts occurred predominantly in the pre-frontal cortex (F3, F4), with spread into central areas. No current literature exists that explores whether tDCS could be used to modulate cortical activity prior to sleep, resulting in either increased or decreased sleep propensity.
The application of focal, non-invasive brain stimulation has already led to novel and effective treatments for neuropsychiatric disease with minimal side effects (Most well studied in depression and repetitive Transcranial Magnetic Stimulation or, rTMS). Should the application of tDCS modulate sleep propensity it would represent a novel study paradigm with the potential to lead to a completely novel treatment for sleep disturbance. With this small pilot study, we propose taking the first step in exploring the utility of tDCS in modulating sleep propensity. We propose to recruit 15 healthy non-treatment seeking participants from the community and expose them to three total nap conditions in a randomized counter balanced fashion, with 10 minutes of either, Anodal, Cathodal, or Sham tDCS stimulation occurring prior to each nap opportunity.
Type d'étude
Inscription (Réel)
Phase
- N'est pas applicable
Contacts et emplacements
Lieux d'étude
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South Carolina
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Charleston, South Carolina, États-Unis, 29401
- Medical University of South Carolina
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Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
La description
Inclusion Criteria:
- age 18-65
- capable of coming in for an initial intake screen, and then again for 2 hours on consecutive Monday, Wednesday, and Friday afternoons
Exclusion Criteria:
- Presence of Neurologic, psychiatric, or sleep disorder.
- Current use of medications affecting the central nervous system.
- Daily consumption of alcohol, or consequences of alcohol use (DUI, occupational, or social dysfunction ect.).
- Tobacco use.
- Consumption of more than the equivalent of 300mg of caffeine daily.
- Habitual sleep duration of less than 6 ½ hours, greater than 8 ½ hours, a difference between weeknight, and weekend sleep of greater than 3 hours, or typical sleep timing more than 3 hours outside of the window of 10pm-6am.
- Score of greater than 5 on the Pittsburgh Sleep Quality Index (PSQ-I), or 10 on the Epworth Sleepiness scale (ESS).
- BMI greater than 30, or Heavy snoring.
- Pregnancy.
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: Science basique
- Répartition: Randomisé
- Modèle interventionnel: Affectation croisée
- Masquage: Double
Armes et Interventions
Groupe de participants / Bras |
Intervention / Traitement |
|---|---|
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Comparateur factice: Sham tDCS
tDCS will be applied, but then turned off after 30 seconds.
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tDCS will be delivered using a Chattanooga Ionto™ Iontophoresis System - Phoresor.
Autres noms:
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Expérimental: Anodal tDCS 2mA 10 Minutes
Anodal tDCS will be applied bi-frontally for 10 minutes at 2mA
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tDCS will be delivered using a Chattanooga Ionto™ Iontophoresis System - Phoresor.
Autres noms:
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Expérimental: Cathodal tDCS 2mA 10 Minutes
Cathodal tDCS will be applied Bi-Frontally for 10 minutes at 2mA
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tDCS will be delivered using a Chattanooga Ionto™ Iontophoresis System - Phoresor.
Autres noms:
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Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Sleep onset latency and sleep architecture
Délai: 30 Minutes
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Sleep onset latency and sleep architecture will be assessed using polysomnography during a 30 minute nap opportunity.
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30 Minutes
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Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Sleep quality
Délai: 30 Minutes
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Sleep quality will be assessed with a visual analog scale following each nap opportunity.
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30 Minutes
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Collaborateurs et enquêteurs
Parrainer
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude
Achèvement primaire (Réel)
Achèvement de l'étude (Réel)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Estimation)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Mots clés
Autres numéros d'identification d'étude
- Power Nap
Informations sur les médicaments et les dispositifs, documents d'étude
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