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Insidee Out on Instagram: "most people, the size of the pupils changes automatically reacting instantly to light levels and signals from the brain without any conscious control. However, scientists have identified an exceptionally rare phenomenon in which certain individuals can deliberately control this process, expanding or contracting their pupils purely through mental effort. Research suggests that these people are able to consciously engage tiny internal muscles of the eye-muscles that the
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Insidee Out on Instagram: "most people, the size of the pupils changes automatically reacting instantly to light levels and signals from the brain without any conscious control. However, scientists have identified an exceptionally rare phenomenon in which certain individuals can deliberately control this process, expanding or contracting their pupils purely through mental effort. Research suggests that these people are able to consciously engage tiny internal muscles of the eye-muscles that the
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