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Delayed Phonological Encoding in Stuttering: Evidence from Eye Tracking.

Kristin M Pelczarski1, Anna Tendera2, Matthew Dye3

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Summary
This summary is machine-generated.

Eye-tracking reveals that adults who stutter exhibit distinct visual processing patterns during speech tasks. This suggests additional cognitive load during phonological encoding may contribute to stuttering.

Keywords:
Phonological encodingeye trackingnonword readingstuttering

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Area of Science:

  • Neuroscience
  • Linguistics
  • Psychology

Background:

  • Stuttering is a complex speech disorder linked to motor and linguistic system differences.
  • Psycholinguistic theories propose phonological encoding deficits contribute to stuttering.
  • Measuring phonological encoding is challenging without controlling for speech-motor involvement.

Purpose of the Study:

  • To investigate eye-tracking as a method to measure phonological encoding duration.
  • To compare eye-tracking measures between adults who stutter and those who do not.

Main Methods:

  • Eighteen adults who stutter and 18 controls read nonwords silently and aloud.
  • Eye-tracking measured dwell time, fixation count, and response time.
  • Analysis focused on differences in visual processing during reading tasks.

Main Results:

  • Adults who stutter showed more fixations and longer dwell times during overt reading.
  • In silent reading, adults who stutter had more fixations but similar dwell times.
  • Findings suggest increased processing demands for adults who stutter.

Conclusions:

  • Eye-tracking provides insights into the cognitive processes underlying stuttering.
  • Additional phonological and phonetic encoding demands may affect adults who stutter.
  • Eye-gaze patterns indicate potential delays in phonological-to-motor encoding for people who stutter.