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Related Experiment Video

Updated: Sep 10, 2025

Eye-tracking to Distinguish Comprehension-based and Oculomotor-based Regressive Eye Movements During Reading

Eye-tracking to Distinguish Comprehension-based and Oculomotor-based Regressive Eye Movements During Reading

Published on: October 18, 2018

Eye Movements of Persons with Aphasia During Connected-Text Reading.

Kimberly G Smith¹, Sarah C McWilliams¹, Joseph Schmidt²

¹Department of Speech Pathology and Audiology, University of South Alabama, Mobile, USA.

|August 26, 2025

Summary

Eye movement patterns during reading differ between individuals with aphasia (PWA) and neurotypical controls, with PWA showing shorter gaze durations and more regressions. These differences may inform the study of language processing in neuro-atypical populations.

Keywords:

aphasia comprehension eye movements reading

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Last Updated: Sep 10, 2025

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Published on: October 18, 2018

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Published on: January 10, 2014

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Published on: November 30, 2018

Area of Science:

Neuroscience
Cognitive Science
Linguistics

Background:

Eye movements during reading offer insights into cognitive-linguistic processing in neurotypical individuals.
Measures like fixation duration and regressions are linked to language processing.
Eye tracking has been applied to study reading in neuro-atypical populations, including persons with aphasia (PWA).

Purpose of the Study:

To investigate differences in eye movement measures during connected text reading between PWA and neurotypical controls.
To explore associations between eye movement patterns, language processing severity, and reading comprehension in PWA.

Main Methods:

A connected text-reading eye-tracking task was administered to 24 PWA and 24 age-matched controls.
PWA also underwent assessments for language processing severity, reading comprehension, and aphasia subtype identification.

Main Results:

Persons with aphasia exhibited shorter gaze durations, longer regression durations, and more fixations compared to controls.
No significant group differences were found for first fixation duration or word skipping.
Eye movement patterns did not vary across different aphasia subtypes (anomic, Broca's, conduction/Wernicke's).
Language severity significantly impacted gaze duration, but reading comprehension did not significantly affect the examined eye movement measures.

Conclusions:

Findings align with prior research showing distinct eye movement patterns in PWA during reading.
The choice of eye movement measures, stimuli, and procedures can influence study outcomes.
This research aids in identifying optimal eye movement measures for studying language processing in neuro-atypical individuals and understanding reading comprehension strategies in PWA.