Brief report: can you see what is not there? low-level auditory-visual integration in autism spectrum disorder.

Researchers asked adults with autism and matched controls to watch a silent video. A flash appeared on screen at the same time as zero, one, or two beeps.

If basic sound-sight wiring is off, the beeps should make people "see" extra flashes. This illusion tests the earliest step of sensory blending.

Both groups fell for the trick the same way. High-functioning adults with ASD showed normal low-level auditory-visual integration.

Erickson et al. (2016) saw the same null result in children, so the intact wiring starts young and stays.

Taylor et al. (2010) looks like a contradiction — they found AV lag in kids. The gap closes by adolescence, so age, not method, drives the difference.

Saalasti et al. (2012) extends the story: adults with ASD fail the McGurk speech illusion even though they pass this basic flash-beep test. The break-down sits upstream in higher-order speech areas, not in early sensory fusion.

When a client covers their ears or stares at lights, don't assume their eyes and ears can't sync. Low-level integration is likely fine. Look instead at how they interpret complex sights and sounds like faces, speech, or busy rooms. Target higher-order training such as labeling emotions, predicting sequences, or using visual schedules to clarify meaning, not simple sensory drills.