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Retinohypothalamic tract

Index Retinohypothalamic tract

The retinohypothalamic tract (RHT) is a photic neural input pathway involved in the circadian rhythms of mammals. [1]

25 relations: Brain, Circadian clock, Circadian rhythm, CREB, Eye, Free-running sleep, Intrinsically photosensitive retinal ganglion cells, Light effects on circadian rhythm, List of regions in the human brain, Mammalian eye, Melanopsin, Neural pathway, Neuroscience of rhythm, Photoperiodism, Photoreceptor cell, Pineal gland, Pupillary light reflex, Retinal ganglion cell, RHT, Robert Y. Moore, Seasonal affective disorder, Shift work sleep disorder, Suprachiasmatic nucleus, Vasoactive intestinal peptide, Visual system.

Brain

The brain is an organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals.

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Circadian clock

A circadian clock, or circadian oscillator, is a biochemical oscillator that cycles with a stable phase and is synchronized with solar time.

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Circadian rhythm

A circadian rhythm is any biological process that displays an endogenous, entrainable oscillation of about 24 hours.

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CREB

CREB (cAMP response element-binding protein) is a cellular transcription factor.

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Eye

Eyes are organs of the visual system.

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Free-running sleep

Free-running sleep is a sleep pattern that is not adjusted (entrained) to the 24-hour cycle in nature nor to any artificial cycle.

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Intrinsically photosensitive retinal ganglion cells

Intrinsically photosensitive retinal ganglion cells (ipRGCs), also called photosensitive retinal ganglion cells (pRGC), or melanopsin-containing retinal ganglion cells (mRGCs), are a type of neuron in the retina of the mammalian eye.

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Light effects on circadian rhythm

Most animals and other organisms have "built in clocks" in their brains that regulate the timing of biological processes and daily behavior.

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List of regions in the human brain

The human brain anatomical regions are ordered following standard neuroanatomy hierarchies.

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Mammalian eye

Mammals normally have a pair of eyes.

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Melanopsin

Melanopsin is a type of photopigment belonging to a larger family of light-sensitive retinal proteins called opsins and encoded by the gene Opn4.

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Neural pathway

A neural pathway is the connection formed by axons that project from neurons to make synapses onto neurons in another location, to enable a signal to be sent from one region of the nervous system to another.

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Neuroscience of rhythm

The neuroscience of rhythm refers to the various forms of rhythm generated by the central nervous system (CNS).

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Photoperiodism

Photoperiodism is the physiological reaction of organisms to the length of day or night.

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Photoreceptor cell

A photoreceptor cell is a specialized type of neuroepithelial cell found in the retina that is capable of visual phototransduction.

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Pineal gland

The pineal gland, also known as the conarium, kônarion or epiphysis cerebri, is a small endocrine gland in the vertebrate brain.

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Pupillary light reflex

The pupillary light reflex (PLR) or photopupillary reflex is a reflex that controls the diameter of the pupil, in response to the intensity (luminance) of light that falls on the retinal ganglion cells of the retina in the back of the eye, thereby assisting in adaptation to various levels of lightness/darkness.

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Retinal ganglion cell

A retinal ganglion cell (RGC) is a type of neuron located near the inner surface (the ganglion cell layer) of the retina of the eye.

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RHT

RHT may refer to.

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Robert Y. Moore

Robert Y. Moore (born December 5, 1931) is an American neurologist with interests in disorders of biological rhythms, movement disorders, and behavioral neurology.

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Seasonal affective disorder

Seasonal affective disorder (SAD) is a mood disorder subset in which people who have normal mental health throughout most of the year exhibit depressive symptoms at the same time each year, most commonly in the winter.

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Shift work sleep disorder

Shift work sleep disorder (SWSD) is a circadian rhythm sleep disorder characterized by insomnia and excessive sleepiness affecting people whose work hours overlap with the typical sleep period.

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Suprachiasmatic nucleus

The suprachiasmatic nucleus or nuclei (SCN) is a tiny region of the brain in the hypothalamus, situated directly above the optic chiasm.

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Vasoactive intestinal peptide

Vasoactive intestinal peptide, also known as vasoactive intestinal polypeptide or VIP, is a peptide hormone that is vasoactive in the intestine.

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Visual system

The visual system is the part of the central nervous system which gives organisms the ability to process visual detail, as well as enabling the formation of several non-image photo response functions.

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Retinohypothalamic tracts.

References

[1] https://en.wikipedia.org/wiki/Retinohypothalamic_tract

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