Contraversive eye deviation during deep brain stimulation of the globus pallidus internus

Neurology. 2001 May 22;56(10):1396-9. doi: 10.1212/wnl.56.10.1396.

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.

Publication types

  • Case Reports

MeSH terms

  • Electric Stimulation Therapy
  • Electrodes, Implanted
  • Eye Movements / physiology*
  • Female
  • Functional Laterality / physiology*
  • Globus Pallidus / pathology
  • Globus Pallidus / physiopathology
  • Globus Pallidus / surgery*
  • Humans
  • Internal Capsule / pathology
  • Internal Capsule / physiopathology
  • Internal Capsule / surgery
  • Intraoperative Complications / etiology
  • Intraoperative Complications / pathology
  • Intraoperative Complications / physiopathology
  • Magnetic Resonance Imaging
  • Middle Aged
  • Ocular Motility Disorders / etiology*
  • Ocular Motility Disorders / pathology
  • Ocular Motility Disorders / physiopathology
  • Parkinson Disease / pathology
  • Parkinson Disease / physiopathology
  • Parkinson Disease / surgery*
  • Treatment Outcome