Summary
This study examines Fos protein expression in the pregeniculate nucleus (PGN) of the marmoset (Callithrix jacchus) thalamus in response to a dark pulse, shedding light on how non-image-forming visual structures contribute to circadian entrainment in primates. These findings are relevant for lighting design in that they help clarify the neural mechanisms by which light-dark transitions — such as those created by architectural lighting changes — influence the primate circadian system.
Key Findings
- Fos expression was observed in the pregeniculate nucleus of the marmoset thalamus following a dark pulse, suggesting this structure responds to light-dark transitions as part of the circadian entrainment pathway.
- The PGN, located dorsomedially to the main visual relay in the thalamus, appears to play a role in processing photic information relevant to circadian rhythms in primates.
Categories
Sleep & Circadian Health: Examines Fos expression in the pregeniculate nucleus following a dark pulse, directly implicating this thalamic structure in circadian light-dark entrainment in a primate model.
The Science of Light: Investigates photic signaling pathways in the marmoset thalamus, contributing to understanding of how light-dark transitions are processed in the primate visual-circadian system.
Author(s)
RRM Lima
Publication Year
2014
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 two‐process 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