We measured the typical developmental trajectory of the window of audiovisual simultaneity by testing four age groups of children (5, 7, 9, and 11 years) and adults. We presented a visual flash and an auditory noise burst at various stimulus onset asynchronies (SOAs) and asked participants to report whether the two stimuli were presented at the same time. Compared with adults, children aged 5 a...

Amblyopia is a developmental visual impairment that is increasingly recognized to affect higher-level perceptual and multisensory processes. To further investigate the audiovisual (AV) perceptual impairments associated with this condition, we characterized the temporal interval in which asynchronous auditory and visual stimuli are perceived as simultaneous 50% of the time (i.e., the AV simultan...

Minkowski spacetime parallax uses the shifting plane of simultaneity (POS), an accelerating inertial reference frame (IRF), while referencing a distant signal (such as pulsar) with regularly recurring intervals. The distance signal's source can be derived from Lorentz transfer equations and rate at which intervals are changing, due to (POS) during acceleration. advantage this method measuring i...