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Related Experiment Video

Updated: Jun 13, 2026

A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss

A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss

Published on: April 11, 2025

Gaze dynamics of cued speech perception.

Annahita Sarré¹, Laurent Cohen^2,3

¹Inserm U 1127, CNRS UMR 7225, Sorbonne Universités, Institut du Cerveau, ICM, Hôpital Pitié, 47 Boulevard de l'Hôpital, Paris, 75013, France. annahita.sarre@gmail.com.

Scientific Reports

|June 11, 2026

Summary

Cued Speech (CS) enhances communication for deaf individuals by combining lip-reading with hand gestures. This study reveals how deaf and hearing users visually process CS, highlighting differences in eye movement patterns.

Keywords:

Cued speech Deafness Eye-tracking Face perception Language

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Area of Science:

Visual communication
Speech perception
Linguistics

Background:

Lip-reading is crucial for deaf individuals but has limitations.
Cued Speech (CS) supplements lip-reading with hand gestures to convey full phonological information visually.
Understanding CS perception mechanisms is vital for its effective use.

Purpose of the Study:

To investigate eye movement patterns during Cued Speech perception.
To compare visual attention in deaf CS users, hearing CS users, and hearing naive controls.
To explore how linguistic difficulty affects visual processing in CS users.

Main Methods:

Recorded eye movements of deaf CS users, hearing CS users, and hearing controls viewing silent CS videos.
Participants watched videos of words, pseudowords, and sentences presented in CS.
Analyzed fixation locations and distributions on the speaker's face.

Main Results:

All groups primarily fixated on the speaker's face, especially the lips, even when processing CS gestures.
Deaf participants showed more symmetrical facial fixation compared to hearing groups, who favored the left side.
Increased phonological, lexical, or semantic difficulty led to greater fixation in the inferior and left facial regions for CS users.

Conclusions:

CS provides a unique visual pathway for full phonological information.
Eye movement patterns reveal distinct visual processing strategies between deaf and hearing CS users.
Behavioral tuning in visual attention facilitates efficient phonological recovery through Cued Speech.