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Hypergraphia: a right hemisphere syndrome.
  1. A Yamadori,
  2. E Mori,
  3. M Tabuchi,
  4. Y Kudo,
  5. Y Mitani


    A new right hemisphere symptom is reported. Five stroke patients with lesions in the perisylvian cortico-subcortical or thalamic region of the right hemisphere produced linguistically correct but semantically loose writing. The behaviour was initiated by subtle prompting and continued semiautomatically. A possible mechanism underlying this hypergraphia is discussed.

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