Author： Çelebisoy Nese Seçil Yaprak Yüceyar Nur Ertekin Cumhur
Publisher： Informa Healthcare
ISSN： 0165-8107
Source： Neuro-Ophthalmology, Vol.21, Iss.3, 1999-05, pp. : 165-170
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Abstract
A patient is presented with acute onset of partial oculomotor paresis on one side and upper eyelid retraction on the other due to a vascular insult. An electromyographic study revealed frontalis muscle overactivity on the side of lid retraction which has never been documented before, indicating that not only was the supramotor control over the central caudal nucleus affected as previously proposed, but the inhibition of the frontalis muscle motoneurons was also disrupted. Based on these data, a premotoneuronal system is proposed that controls upper eyelid movements by affecting the frontalis muscle and orbicularis oculi muscle motoneurons in addition to the central caudal nucleus.
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