The following information is taken from the Damasio article in the reader. Deformations of grammatical structure were systematic, representing 10 classes of rule violation.
Results show that Subjects displayed a remarkable sensitivity to structural information.
Results indicate significant sparing of syntactic knowledge in agrammatism and suggest that the sentence comprehension disturbances in these patients do not reflect loss of the capacity to recover syntactic structure. Alternative explanations of the comprehension problem in agrammatism are explored. Neural basis of an inherited speech and language disorder. A positron emission tomography activation study revealed functional abnormalities in both cortical and subcortical motor-related areas of the frontal lobe, while quantitative analyses of magnetic resonance imaging scans revealed structural abnormalities in several of these same areas, particularly the caudate nucleus, which was found to be abnormally small bilaterally. 6-centiMorgan interval in the chromosomal band 7q31.