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Aphasic deficits in syntactic processing.

David Caplan1

  • 1Neuropsychology Laboratory, Department of Neurology, Massachusetts General Hospital, Boston, MA 02114, USA. dcaplan@partners.org

Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
|November 30, 2006
PubMed
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Syntactic processing deficits in aphasia may stem from reduced processing resources, not specific operation impairments. This review suggests resource reduction models best explain aphasia data.

Area of Science:

  • Neuroscience
  • Linguistics
  • Psychology

Background:

  • Aphasia, a language disorder post-brain damage, often involves syntactic processing deficits.
  • Current theories propose either specific operation impairments or reduced processing resources as causes.

Purpose of the Study:

  • To review existing data on syntactic processing deficits in aphasia.
  • To evaluate the empirical support for different theoretical models of these deficits.

Main Methods:

  • Literature review of studies investigating syntactic processing in aphasia.
  • Critical analysis of data supporting specific operation impairment versus resource reduction models.

Main Results:

  • The reviewed data predominantly supports models attributing deficits to reduced processing resources.

Related Experiment Videos

  • Evidence for impairments in specific syntactic operations is less conclusive.

    • Conclusions:

    • The findings suggest that a reduction in available cognitive resources is a more parsimonious explanation for syntactic deficits in aphasia.
    • Future research should focus on the nature and extent of resource limitations in aphasic syntactic processing.