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NCT03636360 Clinical Trial

The Impact of Artificial Sunlight on Human Sleep and Circadian Rhythms

Sleep Clinical Trial

Official title:
The Impact of Artificial Sunlight on Human Sleep and Circadian Rhythms

Clinical Trial Details — Status: Completed

Administrative data
NCT number NCT03636360
Other study ID # Sunlike
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date July 1, 2019
Est. completion date March 1, 2021

Study information
Verified date March 2021
Source VA Palo Alto Health Care System
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial 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.

Recruitment information / eligibility
Status Completed
Enrollment 10
Est. completion date March 1, 2021
Est. primary completion date March 1, 2021
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years to 35 Years
Eligibility 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 - Pregnant

Study Design

Related Conditions & MeSH terms

Intervention

Device:
• Light
15 hours of light exposure

Locations
Country Name City State
United States VA Palo Alto Health Care System Palo Alto California

Sponsors (2)
Lead Sponsor Collaborator
VA Palo Alto Health Care System Seoul Semiconductor

Country where clinical trial is conducted

United States, 

Outcome
Type Measure Description Time frame Safety issue
Primary Alertness Change in median reaction time score on the auditory psychomotor vigilance test 15 hours
Primary Melatonin suppression Amount of reduction in the concentration of salivary melatonin concentrations during an experimental light stimulus 3 hours
Secondary Mood Change in total positive and negative affect scores on the Positive and Negative Affect Schedule (PANAS) 15 hours
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