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Clinical Trials/NCT03636360
NCT03636360
Completed
Not Applicable

The Impact of Artificial Sunlight on Human Sleep and Circadian Rhythms

VA Palo Alto Health Care System1 site in 1 country10 target enrollmentJuly 1, 2019
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ConditionsSleepCircadian DysregulationMood

Overview

Phase
Not Applicable
Intervention
Not specified
Conditions
Sleep
Sponsor
VA Palo Alto Health Care System
Enrollment
10
Locations
1
Primary Endpoint
Alertness
Status
Completed
Last Updated
5 years ago
OverviewInvestigatorsEligibility CriteriaOutcomesSitesSimilar Trials

Overview

Brief Summary

The purpose of this study is to examine, in healthy controls, whether LED lighting that has a color spectrum similar to that of sunlight is able to differentially impact mood, circadian rhythms, sleep, and behavior, as compared to standard fluorescent lighting.

Registry
clinicaltrials.gov
Start Date
July 1, 2019
End Date
March 1, 2021
Last Updated
5 years ago
Study Type
Interventional
Study Design
Crossover
Sex
All

Investigators

Sponsor
VA Palo Alto Health Care System
Responsible Party
Principal Investigator
Principal Investigator

Jamie M. Zeitzer, Ph.D.

Associate Professor

VA Palo Alto Health Care System

Eligibility Criteria

Inclusion Criteria

  • •Good self-reported health
  • •Normal color vision

Exclusion Criteria

  • •No sleep disorders
  • •No extreme chronotype
  • •Regular smoker
  • •Significant hearing loss
  • •Depression
  • •Alcohol use disorder
  • •Use of illegal drugs

Outcomes

Primary Outcomes

Alertness

Time Frame: 15 hours

Change in median reaction time score on the auditory psychomotor vigilance test

Melatonin suppression

Time Frame: 3 hours

Amount of reduction in the concentration of salivary melatonin concentrations during an experimental light stimulus

Secondary Outcomes

  • Mood(15 hours)

Study Sites (1)

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