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Anatomic Distribution of Cortical Language Sites in the Basal Temporal Language Area in Patients with Left Temporal Lobe Epilepsy
Author(s) -
Schäffler Leonard,
Lüders Hans O.,
Morris Harold H.,
Wyllie Elaine
Publication year - 1994
Publication title -
epilepsia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.687
H-Index - 191
eISSN - 1528-1167
pISSN - 0013-9580
DOI - 10.1111/j.1528-1157.1994.tb02472.x
Subject(s) - temporal lobe , inferior temporal gyrus , parahippocampal gyrus , limbic lobe , fusiform gyrus , superior temporal sulcus , anatomy , fusiform face area , epilepsy , superior temporal gyrus , temporal cortex , neuroscience , gyrus , psychology , medicine , functional magnetic resonance imaging , perception , face perception
Summary: In evaluation for surgical treatment of intractable psychomotor seizures originating in the language‐dominant left mesiotemporal region, subdural grid electrodes were placed in 29 patients over the temporoparietal cortex and over the basotemporal region. In 13 patients, cortical stimulation of the basotemporal region showed interference with language processing. The most anterior border of the basotemporal language area began 1.1 cm posterior to the anterotemporal tip, and the most posterior margin of the language region was located 6.1 cm posteriorto the temporal tip. The most lateral and the most mesial border were located 1.4 and 5.9 cm, respectively, from the lateral edge of the temporal lobe. The region in which language disturbance could be elicited included the inferior temporal gyrus, the fusiform (lateral and medial occipitotemporal) gyrus, and the parahippocampal gyrus. The basotemporal area most consistently involved with language function was the fusiform gyrus (60% of affected electrodes), followed by the inferotem‐poral (30%), and the parahippocampal (10%) gyri.