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. Author manuscript; available in PMC: 2013 Dec 3.
Published in final edited form as: Epilepsy Behav. 2011 Oct 28;22(4):10.1016/j.yebeh.2011.09.028. doi: 10.1016/j.yebeh.2011.09.028

Fig. 4.

Fig. 4

Real-time assessment of auditory and receptive language nodes: patient with epilepsy with ECoG electrodes implanted over left frontal, parietal, and temporal cortex. A lateral X-ray (A) and an operative photograph (B) depict the configuration of two grids (one 40-contact frontal grid, one 68-contact temporal grid) and three 4-contact strips. A passive mapping procedure (SIGFRIED) identified eloquent language cortex by contrasting task-related changes during listening to voices and tones (C, D). The results are presented in two intuitive interfaces: a two-dimensional interface that mimics the electrode grid and a three-dimensional anatomically correct interface.