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Related Experiment Video

Updated: Jan 21, 2026

Utilizing Repetitive Transcranial Magnetic Stimulation to Improve Language Function in Stroke Patients with Chronic Non-fluent Aphasia
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Audiovisual speech segmentation in post-stroke aphasia: a pilot study.

Anahita Basirat1, Étienne Allart2,3, Angèle Brunellière1

  • 1UMR 9193 - SCALab - Sciences Cognitives et Sciences Affectives, Univ. Lille, CNRS, CHU Lille, Lille, France.

Topics in Stroke Rehabilitation
|August 2, 2019
PubMed
Summary

People with post-stroke aphasia (PWA) struggle with speech segmentation, impacting sentence comprehension. Visual cues did not significantly improve their ability to detect word boundaries in this pilot study.

Keywords:
Speech segmentationaphasiaaudiovisual speechcommunicationlexical accesssentence processingstroke

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Area of Science:

  • Neuroscience
  • Speech and Language Pathology

Background:

  • Stroke can lead to sentence comprehension deficits.
  • Speech segmentation, crucial for word identification and meaning extraction, is understudied in post-stroke aphasia (PWA).

Purpose of the Study:

  • To investigate speech segmentation abilities in PWA.
  • To assess the impact of visual articulatory cues on sentence segmentation in PWA.

Main Methods:

  • A word-monitoring task was used with 14 PWA and 12 controls.
  • Participants completed tasks in auditory-only and audiovisual modalities.
  • Performance was measured by correct response proportion; visual enhancement quantified benefits of visual cues.

Main Results:

  • PWA performed significantly worse than controls in both auditory-only and audiovisual conditions.
  • PWA performance correlated with phonological abilities; only six PWA utilized visual cues.
  • No significant group-level improvement was observed with visual cues for PWA (median visual enhancement: 7%).

Conclusions:

  • Speech segmentation deficits are likely present in PWA.
  • Assessing and training speech segmentation is important post-stroke.
  • Further research is needed on PWA who benefit from visual speech cues.