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White matter pathways in persistent developmental stuttering: Lessons from tractography.

Vered Kronfeld-Duenias1, Oren Civier1, Ofer Amir2

  • 1The Gonda Multidisciplinary Brain Research Center, Bar-Ilan University, Ramat-Gan, Israel.

Journal of Fluency Disorders
|October 21, 2017
PubMed
Summary
This summary is machine-generated.

Persistent developmental stuttering (PDS) is linked to altered white matter pathways in the brain. This study found microstructural differences in key pathways, suggesting PDS involves broader neural circuit disruptions.

Keywords:
diffusion imagingfluency disordersmethodological overviewstutteringtractographywhite matter

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Area of Science:

  • Neuroscience
  • Neuroimaging
  • Speech Science

Background:

  • Fluent speech production depends on interconnected brain regions.
  • Neural pathways linking brain areas are crucial for speech fluency.
  • Persistent developmental stuttering (PDS) disrupts speech fluency.

Purpose of the Study:

  • Investigate the role of white matter pathways in PDS.
  • Compare white matter properties in adults who stutter versus fluent speakers.

Main Methods:

  • Utilized diffusion weighted imaging and tractography.
  • Compared diffusion properties across 18 major cerebral white matter pathways.
  • Reviewed existing literature on PDS-implicated pathways.

Main Results:

  • Identified microstructural differences in the anterior callosum.
  • Found alterations in the right inferior longitudinal fasciculcus.
  • Observed differences in the right cingulum in individuals who stutter.

Conclusions:

  • PDS is associated with widespread differences in bilateral brain networks.
  • Findings indicate involvement of dorsal fronto-temporal, fronto-parietal, and motor pathways.
  • Additional right hemispheric pathway differences suggest PDS affects circuits beyond known language and motor areas.