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A popular one involves binocular rivalry: if different images are shown to a person’s left and right eye, their conscious perception flips between them.

However, those findings are not conclusive, because binocular rivalry is not a direct measure of the balance of excitatory and inhibitory activity in the brain, cautions Ilan Dinstein, associate professor of cognitive and brain sciences at Ben Gurion University in Beer Sheva, Israel.

An important next step will be to discern which autism traits relate most strongly to binocular rivalry.

Robertson’s team had shown in a 2013 study that autistic people perceive the images switching in a binocular rivalry task more slowly than neurotypical people do.

The task tests a person’s ability to perceive a phenomenon called binocular rivalry.