Paragrammatism
Medical condition
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Through Grammar
Cause
Huber assumes a disturbance of the sequential organization of sentences as the cause of the syntactic errors (1981:3). Most students and practitioners regard paragrammatism as the morphosyntactic "leitsymptom" of Wernicke's aphasia.
However, ever since the introduction of the term paragrammatism some students have pointed out that paragrammatic and agrammatic phenomena, which in classical theory form part of Broca's aphasia, may co-occur in the same patient.
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History
Since Kleist introduced the term in 1916, paragrammatism has denoted a disordered mode of expression that is characterized by confused and erroneous word order, syntactic structure or grammatical morphology (Schlenck 1991:199f).
Most researchers suppose that the faulty syntactic structure (sentence blends, contaminations, break-offs) results from a disturbance of the syntactic plan of the utterance (de Bleser/Bayer 1993:160f).
In non-fluent aphasia, oral expression is often agrammatic, i.e. grammatically incomplete or incorrect. By contrast, expression in fluent aphasia usually appears grammatical, albeit with disruptions in content. Despite this persistent impression, errors of sentence structure and morphology do occur in fluent aphasia, although they take the form of substitutions rather than omissions.