The goal of this observational study is to identify behavioral and physiological markers of social alterations in Autism Spectrum Disorders compared to Typically Developping peers. This single-centre study plan to use eye tracking to evaluate social disorders in Autism Spectrum Disorders (ASD). The investigators will estimate oculometric and pupillometric indices as potential ASD biomarkers. The study will last 4 years and will be organized in two phases.
In a first phase (expected to last 12-16 months), after an experimental validation in typical adults, relevant oculometric and pupillometric indices will be identified in a typical population of children and in a clinically diagnosed population of ASD children. In a second phase of the protocol (expected to last 32-36 months), biomarkers identified in the first phase will be tested on a larger population including other neurodevelopmental disorders.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
OTHER
Masking
NONE
Enrollment
460
Eye-tracker recordings of eye movements, gaze direction and pupillary reactivity
Service de Pédopsychiatrie-CHU-TOURS
Tours, France
RECRUITINGOculometric measurements 1: Tracking time
Mean of tracking time (ms) during entire stimuli duration
Time frame: through study completion, an average of 1 year (first phase) and of 2 years (second phase)
Oculometric measurements 2: Fixation time on the screen
Mean of fixation time on the screen (ms) during entire stimuli duration
Time frame: through study completion, an average of 1 year (first phase) and of 2 years (second phase)
Oculometric measurements 3: Fixation time on the eye area during entire stimuli duration
Mean of fixation time on the eye area of face stimuli (ms) during entire stimuli duration
Time frame: through study completion, an average of 1 year (first phase) and of 2 years (second phase)
Oculometric measurements 4: Fixation time on the mouth area of face stimuli
Mean of fixation time on the mouth area of face stimuli (ms) during entire stimuli duration
Time frame: through study completion, an average of 1 year (first phase) and of 2 years (second phase)
Pupillometric measurements
Mean of pupil dilation variation(mm) in response to entire stimuli duration
Time frame: through study completion, an average of 1 year (first phase) and of 2 years (second phase)
Discriminative power
AUROC (Area Under the Receiver Operating Characteristics, in percent) analysis of combined oculometric and pupillometric measurements. Scale score : 0-100% (above 70% : good performance; above 80% : excellent performance; above 90% : outstanding performance)
Time frame: through study completion, an average of 1 year (first phase) and of 2 years (second phase)
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.