Summary
This study investigates how dim light at night (DLaN) exacerbates autistic behaviors in Cntnap2 knockout mice, finding that short-wavelength (blue) light drives circadian disruption and social impairment via melanopsin-expressing ipRGCs. Shifting nighttime light to longer wavelengths ameliorated these negative behavioral effects.
Key Findings
- Blue-enriched light at night suppresses locomotor activity rhythms and impairs social interactions in mice via melanopsin-expressing ipRGCs.
- Mice lacking ipRGCs were resistant to the negative behavioral effects of dim light at night.
- Shifting nighttime light to longer (red-shifted) wavelengths reduced circadian disruption and autistic behavior exacerbation.
Categories
Sleep & Circadian Health: Study examines how light at night disrupts circadian rhythms and worsens autism-related behaviors
The Science of Light: Investigates melanopsin/ipRGC pathway and spectral properties of light (blue vs. long-wavelength) as the mechanism
Author(s)
HB Wang
Publication Year
2022
Related Publications
Sleep & Circadian Health
- Phototransduction by retinal ganglion cells that set the circadian clock
- The mammalian circadian timing system: organization and coordination of central and peripheral clocks
- The twoāprocess model of sleep regulation: a reappraisal
- Melanopsin is required for non-image-forming photic responses in blind mice
- Strange vision: ganglion cells as circadian photoreceptors
The Science of Light
- Phototransduction by retinal ganglion cells that set the circadian clock
- Color appearance models
- The mammalian circadian timing system: organization and coordination of central and peripheral clocks
- Diminished pupillary light reflex at high irradiances in melanopsin-knockout mice
- Melanopsin is required for non-image-forming photic responses in blind mice