منابع مشابه
Unilateral light-near dissociation in lesions of the rostral midbrain.
Examination of the pupillary response to light and accommodation can provide precise information concerning the localization of a lesion within the sympathetic and parasympathetic pathways, the anterior visual pathway, or the brainstem (Table 1). Classical teaching has associated all lesions of the rostral midbrain with bilateral lightnear dissociation (LND), defined as attenuation of the pupil...
متن کاملMidbrain tegmental lesions affecting or sparing the pupillary fibres.
Two patients with oculomotor palsy caused by midbrain infarction are reported. In the first, pupillary reaction was affected and in the second this reaction was spared. Because the lesions in the anterior part of the tegmentum were in the upper midbrain in the first patient and in the lower midbrain in the second, it is suggested that the pupillary components of the oculomotor nerve are located...
متن کاملSevere Bilateral Kinetic Tremor Due to Unilateral Midbrain Lesions
Background The dentatothalamic tract connects the dentate nucleus of the cerebellum with the contralateral thalamus and plays a major role in the pathogenesis of tremor. Unilateral lesions of the dentatothalamic pathway may affect its ipsilateral predecussational or its contralateral postdecussational course, which results either in ipsilateral or in contralateral tremor. Case Report Here, we...
متن کاملSpace-Specific Deficits in Visual Orientation Discrimination Caused by Lesions in the Midbrain Stimulus Selection Network
Perceptual decisions require both analysis of sensory information and selective routing of relevant information to decision networks. This study explores the contribution of a midbrain network to visual perception in chickens. Analysis of visual orientation information in birds takes place in the forebrain sensory area called the Wulst, as it does in the primary visual cortex (V1) of mammals. I...
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ژورنال
عنوان ژورنال: American Journal of Diseases of Children
سال: 1920
ISSN: 0096-8994
DOI: 10.1001/archpedi.1920.01910290098005