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Related Experiment Video

Updated: Sep 6, 2025

Driving Simulation in the Clinic: Testing Visual Exploratory Behavior in Daily Life Activities in Patients with Visual Field Defects

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Published on: September 18, 2012

Normal gaze processing in developmental prosopagnosia.

Zoë Little¹, Colin Palmer², Tirta Susilo³

¹School of Psychology, UNSW Sydney, Australia; School of Psychology, Victoria University of Wellington, New Zealand.

Cortex; a Journal Devoted to the Study of the Nervous System and Behavior

|June 24, 2022

Summary

This summary is machine-generated.

Individuals with developmental prosopagnosia (DP) can still accurately discriminate eye gaze direction, even when face identity recognition is impaired. This suggests distinct processing mechanisms for gaze and identity in face perception.

Keywords:

Adaptation Developmental prosopagnosia Eye gaze Serial dependence Social perception

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Area of Science:

Cognitive Neuroscience
Visual Perception
Human Face Processing

Background:

Human face perception involves distinct functions like gaze discrimination and identity recognition.
Developmental prosopagnosia (DP) is a condition characterized by impaired face identity recognition.
The relationship between gaze discrimination and identity recognition deficits in DP remains unclear.

Purpose of the Study:

To investigate whether gaze discrimination abilities are preserved in individuals with developmental prosopagnosia.
To examine the integrity of various gaze processing mechanisms (spatial and temporal) in DP.
To determine if spared gaze processing can co-exist with impaired identity recognition in DP.

Main Methods:

A large sample of developmental prosopagnosia participants (N=101 for Experiment 1, N=45 for Experiment 2) completed a series of gaze discrimination tasks.
Experiment 1 assessed spatial processing using abnormal eye gaze detection and Wollaston illusion tasks.
Experiment 2 assessed temporal processing using adaptation and serial dependence tasks.

Main Results:

Despite significant deficits in identity recognition, participants with DP performed within the normal range on all gaze discrimination tasks.
Both spatial and temporal mechanisms of gaze processing were found to be intact in the DP group.
Performance on gaze discrimination tasks was not correlated with the severity of identity recognition impairment.

Conclusions:

Gaze discrimination abilities can be normal in individuals with developmental prosopagnosia.
Specific mechanisms of gaze processing are spared even when face identity recognition is severely impaired.
These findings support neurocognitive models proposing distinct neural pathways for processing gaze direction and facial identity.