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...ption = The left [[optic nerve]] and the [[optic tract]]s. A Marcus Gunn pupil indicates an ''afferent'' defect, usually at the level of the [[retin {{selfref|For the jaw-winking syndrome, see [[Marcus Gunn phenomenon]].}}

| B || [[Caloric reflex test|Bárány test]] || [[Robert Bárány]] ||ENT,neurology ||vertigo, vestibular dysfunction || {{WhoN | B || [[Bing's sign]] || [[Paul Robert Bing]] ||neurology ||[[Upper motor neurone lesion|pyramidal tract lesions