Triggered Electrooculography for Identification of Oculomotor and Abducens Nerves during Skull Base Surgery.

ABSTRACT:

Objective

Electrooculography (EOG) records eyeball movements as changes in the potential difference between the negatively charged retina and the positively charged cornea. We aimed to investigate whether reliable EOG waveforms can be evoked by electrical stimulation of the oculomotor and abducens nerves during skull base surgery.

Methods

We retrospectively reviewed the records of 18 patients who had undergone a skull base tumor surgery using EOG (11 craniotomies and seven endonasal endoscopic surgeries). Stimulation was performed at 5 Hz with a stimulus duration of 200 μs and an intensity of 0.1-5 mA using a concentric bipolar probe. Recording electrodes were placed on the upper (active) and lower (reference) eyelids, and on the outer corners of both eyes; the active electr

SUBMITTER: Jeong HN 

PROVIDER: S-EPMC7969041 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature