| Autor: |
Alexandra J. Sequeira, David S. Zee, Janet C. Rucker, Steven L. Galetta, Lance M. Optican, John Martone, Todd E. Hudson, Laura J. Balcer, John Ross Rizzo, Weiwei Dai, Yash P. Chaudhry |
| Rok vydání: |
2019 |
| Předmět: |
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| DOI: |
10.1016/bs.pbr.2019.04.016 |
| Popis: |
Opsoclonus consists of bursts of involuntary, multidirectional, back-to-back saccades without an intersaccadic interval. We report a 60-year-old man with post-concussive headaches and disequilibrium who had small amplitude opsoclonus in left gaze, along with larger amplitude flutter during convergence. Examination was otherwise normal and brain MRI was unremarkable. Video-oculography demonstrated opsoclonus predominantly in left gaze and during pursuit in the left hemifield, which improved as post-concussive symptoms improved. Existing theories of opsoclonus mechanisms do not account for this eye position-dependence. We discuss theoretical mechanisms of this behavior, including possible dysfunction of frontal eye field and/or cerebellar vermis neurons; review ocular oscillations in traumatic brain injury; and consider the potential relationship between the larger amplitude flutter upon convergence and post-traumatic ocular oscillations. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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