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69:(such as by touching or by a foreign body), though it could result from any peripheral stimulus. Stimulation should elicit both a direct and consensual response (response of the opposite eye). The reflex occurs at a rapid rate of 0.1 seconds. The purpose of this reflex is to protect the
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When awake, the lids spread the tear secretions over the corneal surface, on a typical basis of 2 to 10 seconds (though this may vary individually). However, blinking is not only dependent on dryness and/or irritation. A brain area, the
168:) of the trigeminal nerve results in absent corneal reflex when the affected eye is stimulated. Stimulation of one cornea normally has a consensual response, with both eyelids normally closing.
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from foreign bodies and bright lights (the latter known as the optical reflex). The blink reflex also occurs when sounds greater than 40–60
185:, contains a blinking center that controls blinking. Nonetheless, the external stimuli are still involved. Blinking is linked with the
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189:. Blinking is often concurrent with a shift in gaze, and it is believed that this helps the movement of the eye.
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269:'Deaf hearing': Unacknowledged detection of auditory stimuli in a patient with cerebral deafness".
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C, Evinger; Ka, Manning; Jj, Pellegrini; Ma, Basso; As, Powers; Pa, Sibony (1994).
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285:"Not Looking While Leaping: The Linkage of Blinking and Saccadic Gaze Shifts"
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The optical reflex, on the other hand, is slower and is mediated by the
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of the brain. The reflex is absent in infants under nine months.
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Examination of corneal reflex is part of some neurological tests.
100:(CN V) sensing the stimulus on the cornea only (afferent fiber).
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Encyclopædia
Britannica 2006 Ultimate Reference Suite DVD
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The examination of the corneal reflex is a part of some
107:(CN VII) initiating the motor response (efferent fiber).
224:"Eyelid Reflex - an overview | ScienceDirect Topics"
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may diminish or abolish the testing of this reflex.
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137:Flowchart depicting the corneal reflex pathway.
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103:the temporal and zygomatic branches of the
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265:Garde, M.M., & Cowey, A. (2000).
164:. Damage to the ophthalmic branch (V
16:Involuntary blinking of the eyelids
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156:, particularly when evaluating
65:elicited by stimulation of the
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671:Symmetrical tonic neck reflex
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289:Experimental Brain Research
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80:The reflex is mediated by:
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664:Crossed extensor reflex
413:Pharyngeal (gag) reflex
404:Vestibulo-ocular reflex
248:Encyclopædia Britannica
145:, which resides in the
439:Brachioradialis reflex
380:Pupillary light reflex
138:
611:Churchill–Cope reflex
566:Bezold–Jarisch reflex
228:www.sciencedirect.com
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533:Superficial reflexes
408:Oculocephalic reflex
385:Accommodation reflex
114:) is located in the
57:, is an involuntary
49:, also known as the
644:Golgi tendon reflex
586:Oculocardiac reflex
400:Caloric reflex test
187:extraocular muscles
601:Reflex tachycardia
596:Reflex bradycardia
545:Cremasteric reflex
476:Primitive reflexes
301:10.1007/BF00227203
154:neurological exams
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659:Withdrawal reflex
561:Bainbridge reflex
459:Ankle jerk reflex
90:ophthalmic branch
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654:Startle response
629:List of reflexes
540:Abdominal reflex
423:Stretch reflexes
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98:trigeminal nerve
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571:Coronary reflex
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295:(2): 337–344.
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246:"eye, human".
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147:occipital lobe
128:contact lenses
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88:branch of the
47:corneal reflex
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22:Corneal reflex
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581:Diving reflex
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55:eyelid reflex
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607:Respiratory
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320:. Retrieved
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231:. Retrieved
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110:the center (
105:facial nerve
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51:blink reflex
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649:Optokinetic
489:Gastrocolic
273:(1), 71–80.
86:nasociliary
591:Baroreflex
519:Tonic neck
322:2020-05-30
233:2021-06-05
210:References
162:FOUR score
160:, such as
77:are made.
524:Parachute
271:Cortex 36
120:brainstem
96:) of the
692:Reflexes
686:Category
639:H-reflex
509:Stepping
364:Reflexes
193:See also
59:blinking
514:Sucking
504:Rooting
317:6480046
309:7813670
181:of the
126:Use of
118:of the
112:nucleus
63:eyelids
61:of the
36:Purpose
484:Galant
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256:, 2009
204:Reflex
67:cornea
622:Other
494:Grasp
313:S2CID
250:from
172:Rates
499:Moro
450:Leg
430:Arm
305:PMID
158:coma
116:pons
84:the
71:eyes
45:The
297:doi
293:100
53:or
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92:(V
75:dB
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402:/
356:e
349:t
342:v
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