Apraxic agraphia following a vascular lesion in the right cerebellum: two case reports.

Jung DE SMET Hyo, Hanne Baillieux, Philippe Paquier, Peter Marien

Research output: Chapter in Book/Report/Conference proceedingMeeting abstract (Book)

Abstract

Background: Apraxic agraphia (AAG) is a writing disorder due to a loss or lack of access to skilled movement plans of writing. The neural network subserving writing includes the superior parietal region and the dorsolateral and medial premotor cortex. Recently, patients with atypical lesion localisations in the left thalamus and the right cerebellum have been reported. We describe two patients who presented with AAG following a right cerebellar lesion.
Methods: Neurocognitive investigations were performed one and six months post-stroke. Tc-99m-ECD SPECT studies were done concomitantly.
Results: At onset, both patients displayed AAG, ataxic dysarthria, disturbed verbal fluency and naming deficits. At follow-up, AAG persisted in one patient. SPECT in patient 1 revealed a persistent hypoperfusion in the right cerebellum, the left parietal and left premotor areas. In patient 2, a persistent hypoperfusion was found in the right cerebellum, the right parietal, right premotor and right medial prefrontal regions.
Discussion: Anatomo-clinical findings of our study seem to indicate that AAG might result from damage to the cerebellar-encephalic projections, connecting the cerebellum to the prefrontal and parietal areas which subserve the process of writing. As such, it might be hypothesized that the cerebellum is crucially involved in the neural network of writing.
Original languageEnglish
Title of host publicationAbstract Book First Meeting of the Federation of the European Societies of Neuropsychology (ESN)
Publisherhttp://www.fesn.eu/abstracts-first-meeting-edinburgh
Pages119-119
Number of pages1
Publication statusPublished - 2008
EventFinds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet - Stockholm, Sweden
Duration: 21 Sep 200925 Sep 2009

Conference

ConferenceFinds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet
CountrySweden
CityStockholm
Period21/09/0925/09/09

Keywords

  • apraxic agraphia
  • cerebellum
  • writing
  • SPECT

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