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Related Experiment Video

Updated: Jul 29, 2025

Eye Movement Monitoring of Memory
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[External Ocular Movement(EOM)Monitoring].

Fumihiko Nishimura1, Hiroyuki Nakase

  • 1Department of Neurosurgery, Nara Medical University.

No Shinkei Geka. Neurological Surgery
|May 22, 2023
PubMed
Summary

Intraoperative monitoring of extraocular motor nerves using electrooculogram (EOG), electromyogram (EMG), and piezoelectric sensors aids skull base surgery. Improving these techniques is crucial for protecting cranial nerves during neurosurgery.

Area of Science:

  • Neurosurgery
  • Ophthalmology
  • Biomedical Engineering

Context:

  • Skull base surgery requires precise monitoring of cranial nerves.
  • Current methods for monitoring extraocular motor nerve function have limitations, especially with tumors near cranial nerves.

Purpose:

  • To describe and evaluate three modalities for intraoperative monitoring of external ocular movement: free-run EOG, trigger EMG, and piezoelectric sensor monitoring.
  • To highlight the need for improved monitoring techniques to enhance surgical safety.

Summary:

  • This study details three methods for monitoring external ocular movements during surgery: electrooculogram (EOG), electromyogram (EMG), and piezoelectric sensors.
  • It addresses the challenges in accurately monitoring cranial nerve function when tumors are located deep within the surgical site.

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  • The described modalities aim to provide reliable intraoperative feedback on extraocular motor nerve status.

    • Impact:

    • Enhanced intraoperative monitoring can significantly reduce the risk of nerve damage during complex skull base procedures.
    • Improved techniques will lead to better surgical outcomes and patient safety in neurosurgery.
    • This work emphasizes the importance of advanced monitoring for preserving critical neurological functions.