Improved single-letter identification after whole-word training in pure alexia

Neuropsychol Rehabil. 2009 Jun;19(3):340-63. doi: 10.1080/09602010802204000. Epub 2009 Feb 1.

Abstract

Pure alexia is characterised by a very time-consuming letter-by-letter reading strategy due to an impaired identification or integration of single letters. So far, therapy interventions have addressed impaired letter identification using specific single-letter training approaches. In the present study, we report patient KA with pure alexia and letter-by-letter reading. Contrary to common approaches, we investigated whether a whole-word reading approach can be successful despite severe impairments at the level of single-letter identification. As a first step, auditory-visual verification tasks were used to familiarise the patient with the training items, which in a second step were read with limited exposure duration. After a four week intervention, KA's word reading performance improved significantly for trained and control items in terms of speed and accuracy. Although not specifically addressed during our training programme, even single-letter identification and text reading performance increased significantly. However, the patient's reading was still based on a letter-by-letter strategy.

Publication types

  • Case Reports
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alexia, Pure / rehabilitation*
  • Humans
  • Language Tests
  • Language Therapy / methods
  • Male
  • Middle Aged
  • Neuropsychological Tests
  • Pattern Recognition, Visual*
  • Reaction Time
  • Reading*
  • Recognition, Psychology
  • Vocabulary