Blinking

blinkBlinksreflex blinkspontaneous blink
Blinking is a bodily function; it is a semi-autonomic rapid closing of the eyelid.wikipedia
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Eyelid

eyelidspalpebralpalpebra
Blinking is a bodily function; it is a semi-autonomic rapid closing of the eyelid.
Moreover, the blink reflex protects the eye from foreign bodies.

Orbicularis oculi muscle

orbicularis oculiorbicularis musclemuscle of Riolan
A single blink is determined by the forceful closing of the eyelid or inactivation of the levator palpebrae superioris and the activation of the palpebral portion of the orbicularis oculi, not the full open and close.
The pretarsal orbicularis is thought to be responsible for the spontaneous blink

Wink

winking😉winks its eye
Humans use winking, the blinking of only one eye, as a form of body language.
To close and open, or "wink", both eyes is usually an involuntary action known as a "blink".

Body language

bodily gestures and posturesbodily movementsbody language communication
Humans use winking, the blinking of only one eye, as a form of body language.
Moreover, normally our instinctive eyes need to blink, but when our emotions and feelings towards of person, subconsciously alter our blink rate, blinking more than the average 6-10 times per minute.

Dazzle reflex

dazzle reflex, or menace reflex) or auditory stimuli (e.g., menace reflex)
Dazzle reflex is a type of reflex blink where the eyelids involuntarily blink in response to a sudden bright light (glare).

Corneal reflex

blink reflexcorneal
Corneal reflex
The corneal reflex, also known as the blink reflex, is an involuntary blinking of the eyelids elicited by stimulation of the cornea (such as by touching or by a foreign body), though could result from any peripheral stimulus.

Reflex

Autonomic nervous system

autonomicautonomous nervous systemautonomic functions
Blinking is a bodily function; it is a semi-autonomic rapid closing of the eyelid.

Eye

eyesoculareyeball
It is an essential function of the eye that helps spread tears across and remove irritants from the surface of the cornea and conjunctiva.

Tears

lacrimationteartear film
It is an essential function of the eye that helps spread tears across and remove irritants from the surface of the cornea and conjunctiva.

Conjunctiva

conjunctivalconjuctivabulbar conjunctiva
It is an essential function of the eye that helps spread tears across and remove irritants from the surface of the cornea and conjunctiva.

Tortoise

tortoisesAfrican Spir Thigh TortoiseEgyptian Tortoise
Some animals, such as tortoises and hamsters, blink their eyes independently of each other.

Hamster

hamstersCricetineArmenian hamsters
Some animals, such as tortoises and hamsters, blink their eyes independently of each other.

Eyelash

eyelashesciliaryeyelashes,
Eyelashes are hairs attached to the upper and lower eyelids that create a line of defense against dust and other elements to the eye.

Levator palpebrae superioris muscle

levator palpebrae superiorislevator palpebraelevator
A single blink is determined by the forceful closing of the eyelid or inactivation of the levator palpebrae superioris and the activation of the palpebral portion of the orbicularis oculi, not the full open and close.

Superior tarsal muscle

superior tarsalMüller muscleMüller's muscle
The Müller’s muscle, or the superior tarsal muscle, in the upper eyelid and the inferior palpebral muscle in the lower 3 eyelid are responsible for widening the eyes.

Globus pallidus

pallidumpallidalglobal pallidus
Though one may think that the stimulus triggering blinking is dry or irritated eyes, it is most likely that it is controlled by a "blinking center" of the globus pallidus of the lenticular nucleus—a body of nerve cells between the base and outer surface of the brain.

Lentiform nucleus

lenticular nucleuslenticular nucleilentiform
Though one may think that the stimulus triggering blinking is dry or irritated eyes, it is most likely that it is controlled by a "blinking center" of the globus pallidus of the lenticular nucleus—a body of nerve cells between the base and outer surface of the brain.

Oculomotor nerve

oculomotorIIIcranial nerve III
The levator palpebrae superioris’ action is sent through the oculomotor nerve.

Microsleep

micro-sleepmicro-sleepsMicrosleeps
Closures in excess of 1000 ms were defined as microsleeps.

Striatum

ventral striatumdorsal striatumcorpus striatum
Greater activation of dopaminergic pathways dopamine production in the striatum is associated with a higher rate of spontaneous eye blinking.

Parkinson's disease

ParkinsonParkinson diseaseParkinson’s disease
Conditions in which there is reduced dopamine availability such as Parkinson's disease have reduced eye blink rate, while conditions in which it is raised such as schizophrenia have an increased rate.

Schizophrenia

schizophrenicschizophrenicspositive symptoms
Conditions in which there is reduced dopamine availability such as Parkinson's disease have reduced eye blink rate, while conditions in which it is raised such as schizophrenia have an increased rate.

Breathing

breathventilationrespiration
This type of blinking is conducted in the pre-motor brain stem and happens without conscious effort, like breathing and digestion.

Digestion

digestivedigestdigested
This type of blinking is conducted in the pre-motor brain stem and happens without conscious effort, like breathing and digestion.