Contraversive eye deviation during deep brain stimulation of the globus pallidus internus.
case_report · Level V
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- Record sourced from PubMed, PMID 11376197.
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Abstract
Clinical signs help determine correct electrode positioning during stereotactic implantation for chronic high-frequency pallidal stimulation in Parkinson's diease (PD). The authors describe a patient who had marked, sustained, contraversive eye deviation caused by stimulation during pallidal surgery. The underlying mechanism is probably an excitation of fibers in the internal capsule by volume-conducted current spread. Such conjugate eye deviation is thus not necessarily an indication of incorrect electrode placement.
Medical subject headings
- Eye Movements
- Functional Laterality
- Globus Pallidus
- Ocular Motility Disorders
- Parkinson Disease