Figure 1.

Summary of language interference sites identified by direct electrostimulation during counting and picture naming in nine patients with a glioma involving the left dominant hemisphere, with special emphasis on the site locations of syntactic gender errors (both at cortical and subcortical levels). Thirty‐one eloquent sites have been identified: 9 cortical sites eliciting speech arrest during counting (one in each patient); 12 cortical sites eliciting anomia (one in 7 patients, two in one patient, three in one patient); 7 cortical sites eliciting syntactic disorders in 7 patients; and 3 subcortical sites eliciting syntactic disorders in 3 patients (see Results, operative findings, pages 7 and 8).