The corneomandibular reflex: a light touch and wide conclusions

The corneomandibular reflex is present when the touching cornea induces an associated chin movement to the opposite side by contraction of the external pterygoid muscle[1] (Figure). This reflex is seen most commonly in acutely ill patients with coma and elevated intracranial pressure, large cerebral...

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Bibliographic Details
Published in:Arquivos de neuro-psiquiatria 2015-02, Vol.73 (2), p.170-170
Main Authors: Aguiar, Tiago S, Maranhão-Filho, Péricles
Format: Article
Language:English
Subjects:
Coma, Post-Head Injury - physiopathology
Cornea - physiopathology
Humans
Male
Mandible - physiopathology
Middle Aged
Reflex, Abnormal - physiology
Touch
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Summary:The corneomandibular reflex is present when the touching cornea induces an associated chin movement to the opposite side by contraction of the external pterygoid muscle[1] (Figure). This reflex is seen most commonly in acutely ill patients with coma and elevated intracranial pressure, large cerebral hemispheric lesions with secondary brainstem pressure, intrinsic lesions of the upper brainstem or diencephalon, diffuse or metabolic processes, and involvement of corticobulbar pathways in amyotrophic lateral sclerosis or multiple sclerosis[2]. According to Wartenberg[1], there is hardly a more valuable test than this to uncover a supranuclear lesion of the trigeminal nerve.
ISSN:0004-282X
1678-4227
1678-4227
0004-282X
DOI:10.1590/0004-282X20140204