Corneal reflex - Wikipedia
The corneal reflex, also known as the blink reflex or eyelid reflex, [1] is an involuntary blinking of the eyelids elicited by stimulation of the cornea (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).
Reflexes of the Eye: Types & Tests - Cleveland Clinic
2023年1月26日 · The blink reflex: The blink reflex is exactly what it sounds like — an automatic response that makes you blink when something touches your cornea. The tear reflex (lacrimatory reflex): The tear reflex is also triggered by something touching your eye.
Reflexes and the Eye - EyeWiki
There are various other stimuli that can induce a “trigeminal blink reflex” by stimulating the ophthalmic division of the trigeminal nerve, including a gentle tap on the forehead, cutaneous stimulation, or supraorbital nerve stimulation.
Corneal Reflex: How to Test, What to Expect, and More - Verywell …
2023年8月23日 · The corneal reflex is the rapid eye blink that happens when anything touches the surface of your eye. This involuntary action occurs rapidly because there is a connection between the sensory nerve of the eye (trigeminal nerve, cranial nerve 5) and the nerve that controls motor movement of the eyelid (facial nerve, cranial nerve 7) that does not ...
Corneal Reflex - StatPearls - NCBI Bookshelf - National Center …
2023年7月25日 · The corneal blink reflex is caused by a loop between the trigeminal sensory nerves and the facial motor (VII) nerve innervation of the orbicularis oculi muscles. The reflex activates when a sensory stimulus contacts either free nerve endings or mechanoreceptors within the epithelium of the cornea.
The blink reflex and its modulation - ScienceDirect
2024年4月1日 · The blink reflex (BR) is a protective eye-closure reflex mediated by brainstem circuits and triggered by fast-rising and intense stimuli from a variety of sensory modalities. Fig. 1 summarizes the various ways to elicit the BR in clinical practice and research.
Blink Reflex - Physiopedia
Normally, as with the corneal reflex, the ipsilateral electrical stimulation of the trigeminal nerve will produce an eye blink bilaterally. [2] It is indicated in facial palsies (especially Bell's palsy), acoustic neuromas, brain stem lesions such as stroke or tumors, multiple sclerosis, and polyneuropathies like Guillain-Barre syndrome. [1]
The perceptual consequences and neurophysiology of eye blinks
Eye blink conditioning involves the pairing of a predictive stimulus (usually an audio tone) with a stimulus that triggers a blink (e.g., an air puff). Over many pairings of these stimuli, the subject will perform a conditioned blink in response to the predictive stimulus to avoid the air puff.
Blink Reflex (Corneal Reflex) - A Comprehensive Guide
2023年10月8日 · The Corneal Reflex, also known as the Blink Reflex, is a protective and involuntary response of the eye that helps safeguard the cornea, the transparent front surface of the eye. It assesses the facial nerve and trigeminal nerves’ structural integrity.
Eyeblink Reflexes - SpringerLink
The blink reflex is an involuntary blinking of the eyelids elicited when the cornea is stimulated by touch, bright light, loud sounds, or other peripheral stimuli. The evolutionary purpose of this involuntary response is believed to be a survival-related function, to protect the eyes from potentially harmful stimuli (i.e., threat).