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Related Experiment Video

Updated: Mar 23, 2026

Examining Online Syntactic Processing of Spoken Complex Sentences in Chinese Using Dual-Modal Interference Tasks
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Syntactic complexity representation in sentence production reveals a fronto-temporal syntactic network.

Keyi Kang1, Mingchuan Yang2, Yimin Cai3

  • 1Centre for Cognitive and Brain Sciences, University of Macau, Macau SAR, China; Department of Psychology, University of Macau, Macau SAR, China.

Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
|March 21, 2026
PubMed
Summary

This study reveals the brain networks involved in producing complex sentences. Researchers identified a fronto-temporal network, including the left inferior frontal gyrus, crucial for syntactic structure building during language production.

Keywords:
Effective connectivityLanguage networkSentence productionSyntactic complexitySyntactic processingfMRI

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Area of Science:

  • Neuroscience
  • Psycholinguistics
  • Cognitive Science

Background:

  • Syntactic complexity is key to human language.
  • Neural basis of syntactic processing during sentence production remains unclear.
  • Previous research focused on comprehension, not production.

Purpose of the Study:

  • Investigate neural substrates of syntactic processing during sentence production.
  • Establish a hierarchy of syntactic complexity for controlled study.
  • Identify brain networks managing increasing syntactic demands.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) in 30 healthy adults.
  • Picture-description task with controlled syntactic complexity levels.
  • Analysis of brain activation, peak intensity, and effective connectivity.

Main Results:

  • Higher syntactic complexity led to increased processing difficulty (lower accuracy, longer reaction time).
  • A fronto-temporal syntactic network (left IFG, MFG, PostTemp) was identified.
  • Left MFG showed adaptability to syntactic difficulty during production.

Conclusions:

  • Specified a fronto-temporal network for sentence production.
  • Demonstrated the role of specific brain regions in syntactic structure building.
  • Provided insights into the neural underpinnings of complex human language faculty.