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Related Experiment Videos

Sign comprehension in global aphasia.

L Schwartz1

  • 1Northport Veterans Administration Hospital, Northport, New York 11768, USA.

Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
|March 1, 1978
PubMed
Summary

Global aphasia may be a sign comprehension disorder. Aphasic patients scored lower on sign tests than non-aphasic patients, suggesting a need to reconsider aphasia

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Area of Science:

  • Neurolinguistics
  • Cognitive Neuroscience
  • Clinical Psychology

Background:

  • Aphasia is a language disorder typically affecting spoken and written language.
  • The comprehension of non-verbal communication, such as signs, in aphasia is less understood.

Purpose of the Study:

  • To investigate sign comprehension abilities in individuals with global aphasia.
  • To compare sign comprehension between global aphasics and brain-damaged non-aphasics.

Main Methods:

  • A sign comprehension test including natural, animal, and human signs was administered.
  • Ten individuals with global aphasia and eight brain-damaged non-aphasics participated.
  • Participants were matched for etiology, age, and residual intellectual functioning.

Main Results:

  • Global aphasics demonstrated significantly lower scores on the sign comprehension test compared to non-aphasics.
  • This finding suggests a potential deficit in understanding symbolic gestures in global aphasia.

Conclusions:

  • Global aphasia may involve a broader disorder of sign comprehension, not solely limited to verbal language.
  • These results warrant a reconsideration of the underlying mechanisms of global aphasia.

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