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Sign language processing and the mirror neuron system.

David P Corina1, Heather Knapp

  • 1Department of Psychology, University of Washington, Seattle, USA. corina@ucdavis.edu

Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
|August 3, 2006
PubMed
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Frontal and parietal lobes are crucial for sign language, aligning with a broad human action system. However, a strict mirror neuron system model doesn't fully explain sign language processing.

Area of Science:

  • Neuroscience
  • Linguistics
  • Cognitive Science

Background:

  • The mirror neuron system (MNS) is hypothesized to underpin action observation and execution.
  • Frontal and parietal lobes are implicated in motor control and language processing.

Purpose of the Study:

  • To review evidence for frontal and parietal lobe involvement in sign language.
  • To evaluate if sign language data fits the mirror neuron system framework for action observation/execution.

Main Methods:

  • Review of three literature sources: aphasia, cortical stimulation, and functional neuroimaging.
  • Analysis of neuroscientific data related to sign language comprehension and production.

Main Results:

  • Evidence supports frontal and parietal lobe roles in sign language, consistent with a broad human action observation/execution system.

Related Experiment Videos

  • Sign language data is not fully explained by a strict interpretation of the mirror neuron system.
  • Current models of the human action observation/execution system lack specificity.

    • Conclusions:

    • Sign language processing involves a broadly defined frontal-parietal action system.
    • A strict mirror neuron system model is insufficient to explain all aspects of sign language.
    • Further research is needed to refine models of action observation and execution systems.