The Impact of Artificial Sunlight on Human Sleep and Circadian Rhythms

V

VA Palo Alto Health Care System

Status

Completed

Conditions

Circadian Dysregulation
Mood
Sleep

Treatments

Device: Light

Study type

Interventional

Funder types

Other U.S. Federal agency
Other

Identifiers

NCT03636360
Sunlike

Details and patient eligibility

About

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.

Enrollment

10 patients

Sex

All

Ages

18 to 35 years old

Volunteers

Accepts Healthy Volunteers

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

Trial design

Primary purpose

Basic Science

Allocation

Randomized

Interventional model

Crossover Assignment

Masking

Single Blind

10 participants in 4 patient groups, including a placebo group

LED - Sunlike
Experimental group
Description:
LED lighting with spectral pattern similar to that of sunlight
Treatment:
Device: Light
Fluorescent
Active Comparator group
Description:
Fluorescent light at same illuminance (lux) as LED light
Treatment:
Device: Light
Dim
Placebo Comparator group
Description:
Dim fluorescent light with same spectrum as "Fluorescent" condition
Treatment:
Device: Light
LED
Active Comparator group
Description:
Standard LED lighting
Treatment:
Device: Light

Trial contacts and locations

1

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Data sourced from clinicaltrials.gov

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