The left central gyral lesion and pure anarthria

M. Tabuchi, K. Odashima, T. Fujii, K. Suzuki, J. Saitou, A. Yamadori

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We report a very rare case of pure anarthria with lesion analysis. A 44-year-old right-handed man suffered from a cerebral infarction with a mild right hemiparesis and speech disturbance. An MRI of the brain 1.5 months post onset revealed a lesion confined to the left central gyrus. One month after the onset, his spontaneous speech was dysprosodic and laborious. It was contaminated with dysarthria and phonological paraphasias. However, language comprehension, repetition and naming abilities were normal. Most remarkably he showed no impairment in writing with his left hand. Over the following months, his difficulties in verbal output showed general amelioration, but the isolated impairment in the domain of articulation characterized by dysprosody, dysarthria, and phonological paraphasia persisted. As for the symptomatology of pure anarthria resulting from precentral gyral lesions, there have been controversies about its pureness. Some argue that the so called pure anarthria always shows some degree of writing disturbances, albeit mild in degree. Others maintain there certainly exists the pure type without any signs of agraphia. In the present case lesions were limited to the central gyrus but spared the lowest opercular portion. The previous reports of pure anarthria that had mild agraphia all had lesions involving the opercular portion. We conclude the sparing of this area is most likely related with sparing of writing capacity in pure anarthria.

Original languageEnglish
Pages (from-to)464-470
Number of pages7
JournalClinical Neurology
Volume40
Issue number5
Publication statusPublished - 2000 Sep 25
Externally publishedYes

Keywords

  • Agraphia
  • Literal paraphasia
  • Opercular portion
  • Precentral gyrus
  • Pure anarthria

ASJC Scopus subject areas

  • Clinical Neurology

Fingerprint Dive into the research topics of 'The left central gyral lesion and pure anarthria'. Together they form a unique fingerprint.

Cite this