Perseverative dysgraphia: a selective disorder in writing double letters.

A Venneri; R Cubelli; P Caffarra

doi:10.1016/0028-3932(94)90043-4

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Perseverative dysgraphia: a selective disorder in writing double letters.

A Venneri·R Cubelli·P Caffarra

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Abstract

Models of writing processes postulate that abstract graphemic representations contain information about letter doubling independent of letter identity. We describe a patient, R.T., who made perseverative errors only in handwriting geminate letters, [e.g.: "CORTECCIA" (cortex)-->"CORTECCCIA"]. Perseveration was specific to orthography. To explain R.T.'s errors, we argue that after the selection of the correct graphic motor programs, the geminate feature induced a perseverative graphic behaviour. This form of dysgraphia supports the notion that graphemic representations contain specific information about letter doubling.

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Agraphia Apraxias Brain Diseases Female Handwriting Humans Memory Disorders Middle Aged Neuropsychological Tests Tomography, Emission-Computed Case Reports Journal Article Research Support, Non-U.S. Gov't

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A Venneri, R Cubelli, P Caffarra. 1994. Perseverative dysgraphia: a selective disorder in writing double letters.. https://doi.org/10.1016/0028-3932(94)90043-4

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