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Related Experiment Video

Updated: May 25, 2026

Lexical Decision Task for Studying Written Word Recognition in Adults with and without Dementia or Mild Cognitive Impairment
06:48

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Published on: June 25, 2019

Representational neglect for words as revealed by bisection tasks.

Lisa S Arduino1, Chiara Valeria Marinelli, Fabrizio Pasotti

  • 1LUMSA University, Rome, Italy. l.arduino@lumsa.it

Journal of Neuropsychology
|January 20, 2012
PubMed
Summary

This study reveals a specific representational disorder for words, distinct from object neglect and neglect dyslexia. Brain-damaged patients showed unique rightward biases in representational word tasks, highlighting a specialized deficit in mental imagery.

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Neurolinguistics

Background:

  • Unilateral spatial neglect (USN) is a common deficit following brain damage.
  • Neglect dyslexia and representational neglect for objects are known manifestations of USN.
  • The specific nature of word-related representational disorders remains less understood.

Purpose of the Study:

  • To investigate whether a representational disorder for words dissociates from representational neglect for objects and neglect dyslexia.
  • To examine the impact of brain damage on different aspects of word processing and mental imagery.

Main Methods:

  • Evaluated 14 brain-damaged patients with USN and healthy controls.
  • Administered word and line bisection tasks, including representational, visual, and motor conditions.
  • Categorized patients based on neglect dyslexia and representational neglect for non-verbal material using the Clock Drawing Test.

Main Results:

  • Patients and controls exhibited similar leftward biases in visual and motor word bisection tasks.
  • A significant rightward bias was observed in the representational bisection task for patients with both neglect dyslexia and representational neglect for objects.
  • Neither neglect alone nor visual neglect dyslexia predicted this specific representational word deficit.

Conclusions:

  • A specific representational disorder for words exists independently of representational neglect for objects and neglect dyslexia.
  • Mental imagery for words is selectively impaired in certain patient groups with brain damage.
  • These findings contribute to understanding the neural basis of language processing and spatial cognition.