An advantage to using grid or strip electrodes over the "crown of thorns" for recording the ECoG is their ability to:

The ability to slide grid or strip electrodes under the dura to access unexposed areas is a significant advantage in electrocorticography (ECoG). This flexibility allows for more precise monitoring of brain activity in regions that may be difficult to reach with other electrode types, such as the "crown of thorns" system. Grid and strip electrodes can adapt to the anatomy of the brain, enabling clinicians to cover targeted areas more comprehensively, particularly when trying to record from specific gyri and sulci. This improved spatial resolution is crucial for identifying seizure foci and assessing cortical function during surgery.

While the ability to place electrodes precisely on gyri and the convenience of reusing sterilized equipment are important considerations, they do not offer the same level of adaptability and accessibility to deeper or less exposed areas of the brain as sliding the electrodes under the dura does. The capability of individually positioning each contact is also beneficial, but it does not specifically address the unique advantage of accessing unexposed regions provided by grid or strip electrodes. This functional versatility highlights why this particular feature stands out as an essential benefit in intraoperative settings.