Summary
This thesis investigates the role of Lim homeodomain transcription factors in the development of the suprachiasmatic nucleus (SCN) and the function of intrinsically photosensitive retinal ganglion cells (ipRGCs), which are key drivers of circadian entrainment by light. Understanding the developmental biology of these systems has long-term implications for designing lighting interventions that effectively engage the circadian system.
Key Findings
- ipRGCs were found to be functional in Six3-conditional knockout models, as assessed by pupillary light reflex measurements.
- Visual acuity was assessed via optokinetic response to evaluate retinal ganglion cell (RGC) function separately from ipRGC-mediated responses.
- The study provides mechanistic insight into how Lim homeodomain transcription factors govern SCN circuit development and circadian output.
Categories
The Science of Light: Investigates ipRGC function via pupillary light reflex and the developmental biology of the suprachiasmatic nucleus, directly relevant to photoreceptor and circadian light-response mechanisms.
Sleep & Circadian Health: Examines SCN development and circadian function, providing foundational knowledge about how circadian rhythms are established and maintained.
Author(s)
JL Bedont
Publication Year
2015
Related Publications
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
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