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WALLENBERG'S SYNDROME
Author(s) -
Hörnsten G.
Publication year - 1974
Publication title -
acta neurologica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.967
H-Index - 95
eISSN - 1600-0404
pISSN - 0001-6314
DOI - 10.1111/j.1600-0404.1974.tb02793.x
Subject(s) - nystagmus , fixation (population genetics) , tonic (physiology) , eye movement , saccadic masking , vestibular system , gaze , vestibule , medicine , ocular motility disorders , electrooculography , ophthalmology , psychology , audiology , neuroscience , population , psychoanalysis , environmental health
Various oculostatic and oculomotor disturbances were present in all cases of a consecutive series of 14 Wallenberg infarctions. The ocular disorders were in some cases severe and persisted for years; in other cases they were less pronounced and disappeared fairly soon. The oculostatic disturbances were closely linked to the visual symptomatology described in Part I. It was possible to distinguish certain characteristic features of the complex pattern of oculomotor disturbances. These features were especially pronounced after elimination of visual fixation and included tonic eye deviation to the infarction side, vertical, rotatory, oblique and dissociated nystagmus, skew deviation etc. The tonic eye deviation greatly influenced spontaneous and induced nystagmus, nystagmus occurring in different directions of voluntary gaze and saccadic eye movements. A tonic eye deviation towards the affected side occurred after removal of visual fixation to some extent in all of a series of patients with unilateral peripheral vestibular disease. The various complex oculostatic disorders characterizing the Wallenberg cases never did occur in this group. Important links of vestibule‐ocular integration are evidently located within the Wallenberg area. It is, however, not possible to explain the ocular phenomena in accordance with established anatomical and physiological concepts. The special methods for direct observation of the eyes after elimination of the patient's visual fixation were essential for the analysis of these ocular phenomena.