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Functional MR Imaging of the Auditory Cortex with Electrical Stimulation of the Promontory in 35 Deaf Patients Before Cochlea Implantation

Anja M. Schmidta, Benno P. Weberb, Mehdi Vahida, Rene Zachariasb, Jürgen Neuburgerb, Myriam Witta, Thomas Lenarzb and Hartmut Beckera

a Department of Neuroradiology, Medical School Hannover, Germany
b Department of Otorhinolaryngology, Medical School Hannover, Germany



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  		FIG 1. Activation in the area of the primary and/or secondary auditory cortex.

A, Signal intensity time curve.

B, Corresponding region of interest in the area of the auditory cortex.

C, Example of activation along the TTG (BAs 41, 42) with a pst value of P = 10-9.

D, Example of activation just above the cutoff pst value of P = 10-4.

E, Activation in the postcentral gyrus, primary sensory cortex (BAs 3, 1, 2)

F, Bilateral activation in the primary and secondary auditory areas



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  		FIG 2. Distribution of activation in the three groups of patients with hearing and questionable and nonhearing impressions during fMRI.





Copyright © 2008 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X