Reviews by J. Dejerine ( , May, 1907). In this article of fifty pages Dejerine returns to the contest with Marie over the doctrine of aphasia. The author undertakes the task, not only of upholding his previous view,--the classical view--in favor of the third frontal convolution being a motor speech centre, but of determining the limits of this centre, i.e., whether the centre of language is limited to the foot of Broca's convolution, or whether the neighboring regions take part in this function. It is only by serial section, it is maintained by him, that this can be done. Even the most minute "cortical lesions" are more extensive than they appear to be from inspection of the cortex. This is true of them both superficially and in depth. The neighboring convolution, which appears to be normal, will generally be found to have its white matter scooped out by extension of the lesion. True cortical lesions are always subcortical as well. Much more frequent still are lesions which fuse in the centrum ovale at a considerable distance, cutting the fibres which issue from more or less distant convolutions; or, penetrating into the depth of the hemisphere, destroy the central gray nuclei and internal capsule. The lesions often send diverticula irregularly in different directions. The interpretation of the symptoms therefore depends on these conditions which can be determined only by serial sections.
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Motor aphasia and its cortical localization
Prince, Morton
Follow The Journal of Abnormal Psychology
, Volume 2 (5): 227
PsycARTICLES® – Apr 1, 2009
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