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Temporal lobe destruction in a patient with pure word deafness and tabes dorsalis (2)

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Coronal section of the brain, passing through about the middle of the transverse convolutions on the dorsal surface of the temporal lobe. (Left side) On the left side, the destruction of the middle temporal gyrus is more extensive than farther forward, and in this section, all the cortex of the dorsal surface and most of the center of the convolution is absent. There remains preserved only the cortex of the outer surface and all the ventral surface with a narrow layer of adjacent fibers. (Right side) On the right side, only the cortex of the ventral surface is involved. The middle temporal gyrus, as on the left side, shows the greater destruction, and here is all gone except the cortex of its ventral surface and a thin layer of adjacent fibers. (From: Barrett A. A case of pure word-deafness with autopsy. J Nerv Ment Dis 1910;37[2]:82.)