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  • Title: A different form of "pure agraphia": syntactic writing errors in a patients with motor speech and movement disorders.
    Author: Ferguson JH, Boller F.
    Journal: Neurol Neurocir Psiquiatr; 1977; 18(2-3 Suppl):79-86. PubMed ID: 616562.
    Abstract:
    Three patients are described who displayed syntactic writing errors in combination with a motor speech disturbance and impaired motor limb function. Two of the patients had bulbar amyotrophic lateral sclerosis (ALS). Agraphia appeared when verbal communication was no longer possible. Autopsy in one patient disclosed only lesions consistent with ALS. The third patient had palilalia and chorea and although not aphasic, his written language showed persistent syntactic errors. We hypothesize that the agraphia in these patients occurred because of the combination of disordered feedback from the motor speech apparatus and limbs.
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