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Hemispheric contributions to pragmatics.

E Zaidel1, A Kasher, N Soroker

  • 1University of California, Los Angeles, USA.

Brain and Cognition
|June 17, 2000
PubMed
Summary
This summary is machine-generated.

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Patients with left hemisphere damage (LBD) and right hemisphere damage (RBD) showed impairments in basic speech acts (BSAs) and implicatures. BSAs were localized to the left hemisphere, while implicatures showed poor localization.

Area of Science:

  • Neuroscience
  • Psycholinguistics
  • Cognitive Science

Background:

  • Right-hemisphere damage (RBD) and left-hemisphere damage (LBD) can affect pragmatic abilities.
  • Understanding the neural correlates of pragmatic functions is crucial for cognitive neuroscience.

Purpose of the Study:

  • To investigate the localization of basic speech acts (BSAs) and implicatures in patients with RBD and LBD.
  • To explore the relationship between pragmatic functions and other cognitive abilities in hemisphere-damaged patients.

Main Methods:

  • Administered a novel Hebrew pragmatics battery assessing BSAs and implicatures (verbal and nonverbal) to 27 RBD and 31 LBD patients.
  • Utilized Hebrew versions of the Western Aphasia Battery (WAB) and Right Hemisphere Communication Battery.
  • Corrected overall scores for aphasia and neglect indices.

Related Experiment Videos

Main Results:

  • Both LBD and RBD patients were impaired compared to controls but did not differ significantly in overall BSA and implicature scores after correction.
  • BSAs showed systematic localization in the left hemisphere (LH), but not the right (RH).
  • Implicatures demonstrated poor localization in either hemisphere.
  • In LBD patients, BSAs correlated with WAB language functions, suggesting an influence on aphasia test localization.
  • BSAs and implicatures exhibited greater functional independence in RBD patients compared to LBD patients.

Conclusions:

  • The left hemisphere is more likely to host domain-nonspecific cognitive mechanisms for intentional activity, including pragmatic functions.
  • The findings challenge traditional views of language localization by highlighting the role of BSAs in aphasia testing.
  • Pragmatic functions, particularly implicatures, may rely on more distributed or less lateralized neural networks than previously assumed.