cortical mapping
Neurosurgical technique used to identify functional brain regions during surgery to preserve critical neurological functions.
Full Definition
Cortical mapping, also known as cortical stimulation mapping, is an essential neurosurgical technique used during awake craniotomies to identify and preserve eloquent brain regions responsible for critical functions such as speech, motor control, and sensory processing. The procedure involves direct electrical stimulation of exposed cortical tissue while the patient performs specific tasks, allowing surgeons to map functional areas in real-time. This technique is particularly crucial when operating near language areas, motor cortex, or sensory regions. Modern mapping may also incorporate intraoperative neurophysiological monitoring and functional imaging to optimize surgical outcomes while minimizing postoperative deficits.
Usage
Usage note: Specify whether awake or asleep mapping when procedural details are relevant.
In Context
- "Cortical mapping during the awake craniotomy successfully identified speech areas, allowing complete tumor resection." — Operative report
- "The neurosurgical team employed cortical mapping to preserve motor function while removing the lesion from the precentral gyrus." — Surgical planning document