Comparative assessment of sensorimotor function using functional magnetic resonance imaging and electrophysiological...

Area of Science:

• Neurosurgery
• Neuroimaging
• Electrophysiology

Background:

• Accurate sensorimotor cortex localization is crucial for neurosurgical planning, especially with lesions affecting this area.
• Reviewing functional magnetic resonance imaging (fMRI) and invasive electrophysiological mapping techniques for sensorimotor cortex assessment.

Purpose of the Study:

• To discuss the relationship between fMRI and invasive electrophysiological mapping for sensorimotor cortex assessment.
• To compare fMRI findings with intracranial somatosensory evoked potential (SEP) recordings and cortical stimulation results.

Main Methods:

• Survey of existing fMRI literature on sensorimotor cortex activation.
• Comparison of fMRI sensorimotor studies with intracranial SEP recordings and cortical stimulation in neurosurgical patients.
• Analysis of fMRI activation locus in relation to SEP component generators.

Main Results:

• fMRI and invasive electrophysiological mapping provide complementary information for sensorimotor cortex localization.
• Correlation between fMRI activation sites and cortical generators of SEP components is discussed.
• The review synthesizes current knowledge on these methods for presurgical planning.

Conclusions:

• Both fMRI and invasive electrophysiological mapping are valuable tools for sensorimotor cortex assessment.
• Integrating fMRI data with electrophysiological findings enhances the accuracy of presurgical planning.
• This review highlights the importance of multimodal approaches in neurosurgery.