Comparison of fMRI and intraoperative direct cortical stimulation in localization of receptive language areas.
OBJECTIVE
The purpose of this work was to compare the cortical localization of receptive speech using functional MRI (fMRI) and direct intraoperative electrical stimulation.


METHODS
Three strongly right-handed patients with primary neoplasms of the left parasylvian region underwent fMRI while subjected to a passive listening task designed to activate receptive language areas. All three subjects then underwent awake intraoperative language mapping using direct electrical stimulation of the cortex.


RESULTS
In all three subjects, similar, but nonidentical, cortical regions were identified as involved in receptive language function by fMRI and direct cortical stimulation mapping.


CONCLUSIONS
fMRI provides excellent receptive language mapping, but its results must be interpreted with caution due to conceptual and technical differences from direct cortical stimulation mapping.
Lurito
J T
JT
Department of Radiology, Indiana University School of Medicine, Indianapolis 46202, USA.
Lowe
M J
MJ
Sartorius
C
C
Mathews
V P
VP
D001303:Auditory Cortex / Q000473:pathology / Q000503:physiopathology*; D001931:Brain Mapping / Q000379:methods*; D001932:Brain Neoplasms / Q000175:diagnosis / Q000503:physiopathology / Q000601:surgery; D004558:Electric Stimulation; D006801:Humans; D008279:Magnetic Resonance Imaging; D008866:Microsurgery; D016343:Monitoring, Intraoperative / Q000379:methods*; D019635:Neurosurgical Procedures; D015203:Reproducibility of Results; D013060:Speech / Q000502:physiology*