Orexin A excites the rat olivary pretectal nucleus via OX2 receptor in a daily manner.
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TLDR
In this paper, the olivary pretectal nucleus (OPN) was found to be a retinorecipient structure primarily involved in the pupillary light reflex.About:
This article is published in Brain Research.The article was published on 2021-05-13 and is currently open access. It has received 4 citations till now. The article focuses on the topics: Orexin-A & Orexin.read more
Citations
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Daily coordination of orexinergic gating in the rat superior colliculus—Implications for intrinsic clock activities in the visual system
Lukasz Chrobok,Jagoda Stanislawa Jeczmien-Lazur,Monika Bubka,Kamil Pradel,Aleksandra Klekocinska,Jasmin Daniela Klich,Amalia Ridla Rahim,Jihwan Myung,Mariusz Kepczynski,Marian H. Lewandowski +9 more
TL;DR: In this paper, a combination of electrophysiological, immunohistochemical, and molecular approaches across 24 hours was used to investigate the daily coordination between the orexin system and the superior colliculus (SC).
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From Fast Oscillations to Circadian Rhythms: Coupling at Multiscale Frequency Bands in the Rodent Subcortical Visual System
TL;DR: The subcortical visual system (SVS) is a unique collection of brain structures localised in the thalamus, hypothalamus and midbrain this article, which receives ambient light inputs from retinal ganglion cells and integrates this signal with internal homeostatic demands to influence physiology.
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Control and coding of pupil size by hypothalamic orexin neurons
TL;DR: In this paper , cell-specific stimulation, deletion and in vivo recordings revealed strong correlative and causal links between pupil dilation and orexin cell activity, indicating that they specialize in rapid, multiplexed communication of momentary arousal and reward states.
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Metabolic cues impact non‐oscillatory intergeniculate leaflet and ventral lateral geniculate nucleus: standard versus high‐fat diet comparative study
TL;DR: In this article , the effect of metabolically relevant peptides on the spontaneous activity of IGL/VLG neurons was investigated using ex vivo and in vivo electrophysiological recordings as well as in situ hybridisation.
References
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Functional Organization of the Sympathetic Pathways Controlling the Pupil: Light-Inhibited and Light-Stimulated Pathways.
TL;DR: The noradrenergic pathway has widespread connections to neural networks controlling a variety of functions, such as sleep/arousal, pain, and fear/anxiety, and underlie the wake-promoting effect of light in diurnal animals, in contrast to its sleep-promoted effect in nocturnal species.
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Efferent projections of the olivary pretectal nucleus in the albino rat subserving the pupillary light reflex and related reflexes a light microscopic tracing study
TL;DR: The fact that the Edinger-Westphal nucleus, the interstitial nucleus of Cajal and the superior colliculus receive an input from the olivary pretectal nucleus suggests that this primary visual centre is not only involved in the pupillary light reflex, but also in controlling eye and head position and saccadic eye movements.
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Circadian regulation of membrane physiology in neural oscillators throughout the brain.
Jodi R. Paul,Jennifer A. Davis,Lacy K. Goode,Bryan K. Becker,Allison R Fusilier,Aidan Meador‐Woodruff,Karen L. Gamble +6 more
TL;DR: This review explores the existing evidence for molecular clocks and/or neurophysiological rhythms in brain regions outside the SCN and highlights the brain regions that are ripe for future investigation into the critical role of circadian rhythmicity for local oscillators.
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Electrophysiological actions of orexins on rat suprachiasmatic neurons in vitro
TL;DR: It is concluded that orexins can alter SCN neurophysiology and may influence the transmission of information through the SCN to other CNS regions.
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Regulation and function of extra-SCN circadian oscillators in the brain.
TL;DR: Current knowledge about the regulation and function of extra‐SCN circadian oscillators in different brain regions are summarized and experimental approaches enabling us to unravel the organization of the circadian clock network in the central nervous system are devised.