Duration of Moment in Autism

Condition(s) studied

Investigational drug(s) / intervention(s)

Temporal Integration Window task: The TIW task involves alternating visual displays (integration and segmentation trials) across four inter-stimulus intervals (ISI: 16, 32, 83, 116 ms). This task allows estimation of the participant's perceptual integration threshold.

Attentional Blink task: The Attentional Blink task presents rapid sequences of images (including two targets and distractors), measuring the minimum time delay required for both targets to be detected. Three different T1-T2 intervals are tested.

Study summary

This study investigates the temporal dynamics of perception and attention in children with Autism Spectrum Disorder (ASD), focusing on two key phenomena: the Temporal Integration Window (TIW) and the attentional blink. Using eye-tracking, 3- and 5-year-old children with ASD (prototypical or not) will be compared to age-matched neurotypical peers.

The investigators hypothesize that children with ASD exhibit shorter TIWs and attentional blinks, reflecting faster perceptual sampling and attentional processing. These characteristics may contribute to sensory hypersensitivity and difficulties in complex, unpredictable environments such as social situations. The protocol includes two experimental tasks.

Eligibility

Primary outcome measure(s)

• Temporal dynamics of perception — Baseline
  The Temporal Integration Window (TIW) is defined as the shortest interval between two displays that can be integrated into a single percept
• Temporal dynamics of attention — Baseline
  The Attentional Blink duration, defined as the minimal delay between two target stimuli that allows detection of both.

Trial sites (2)

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