Child's Question Leads to Unexpected Discovery: The Mystery of Wrinkled Fingers

Binghamton University Professor Guy German and his team investigated why fingers wrinkle after prolonged water immersion. Contrary to popular belief, they found that the wrinkling isn't due to skin swelling, but rather the contraction of blood vessels beneath the skin. Remarkably, repeated experiments showed that the wrinkle patterns remain consistent across multiple immersions, linked to the relatively stable position of blood vessels. The research even unexpectedly discovered that individuals with median nerve damage don't experience this wrinkling. This discovery has potential forensic applications, such as improving fingerprint identification techniques.