blink response


Also found in: Dictionary, Thesaurus, Encyclopedia.

blink response

a response elicited during nerve conduction studies, consisting of muscle action potentials evoked from orbicularis oculi muscles after brief electric or mechanical stimuli to the cutaneous area supplied by the ophthalmic branch of the trigeminal nerve. Characteristically, there is an early response (approximately 10 msec after stimulus) ipsilateral to the stimulation site (labeled R1) and bilateral late responses (approximately 30 msec after stimulus; labeled R2); the latter are responsible for the visible twitch of the orbicularis oculi muscles.

blink re·sponse

, blink reflex (blingk rĕ-spons', rē'fleks)
A response elicited during nerve conduction studies, consisting of muscle action potentials evoked from orbicularis oculi muscles after brief electric or mechanical stimuli to the cutaneous area supplied by the ophthalmic branch of the trigeminal nerve. Characteristically, there is an early response (approximately 10 msec after stimulus) ipsilateral to the stimulation site (labeled R1) and bilateral late responses (approximately 30 msec after stimulus; labeled R2); the latter are responsible for the visible twitch of the orbicularis oculi muscles.
References in periodicals archive ?
Still, the relevance of a model crucially depends on the to-be-modelled phenomenon and the isomorphic quality of the model: are the operationalisations of premonitory sensations and the subsequent blink response used in this experiment clinically valid to represent a tic model?
One on page 118 could be dangerous, though: "Nature has granted us a very simple and effective safety device to protect our eyes, the 'blink response.'" Don't depend on this instinct near second and third contacts for a total solar eclipse.
The magnitude of the blink response was similar under both experimental conditions.
In particular, the electrical activity induced by cTBS might have interfered with plasticity generated by EBCC pairing [29] and, eventually, altered Purkinje cell activity, which is considered crucial in the expression of conditional blink responses [30].