A groundbreaking study shows mice perceive neon color spreading illusions, enhancing our understanding of visual processing. Credit: SciTechDaily.comFor the first time, research shows that a certain kind of visual illusion, neon color spreading, works on mice. The study is also the first to combine the use of two investigative techniques called electrophysiology and optogenetics to study this illusion.
What do you see? This is a classic neon-color-spreading illusion and is not the same as the one used in these experiments. Chances are you can glance at this and initially see a light-blue circle in slight contrast to the otherwise white background. But in reality, the background is entirely white; it’s as if the blue from the blue sections of the black filaments bleeds into the circle implied by the ends of the blue lines.
Watanabe’s experiment was the first of its kind to make use of both electrophysiology and optogenetics at the same time in animal test subjects exposed to the neon-color-spreading illusion, which allowed his team to see precisely what structures within the brain are responsible for processing the illusion.
“There is a long-standing debate in neuroscience about the role higher levels play in the perception of brightness and it was not an easy thing to study. Our experiment on mice has shown us that neurons in V1 responded not just to the illusion, but also to a nonillusory version of the same kind of pattern shown.
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