The study results Changizi and colleagues, published in the journal Brain, Behavior, and Evolution is contrary to general belief that the finger becomes wrinkled as it absorbs water.
According Changizi, wrinkles on a wet finger serves as a furrow on the tires. Wrinkles form a channel as a flow of water when we press a fingertip on wet surfaces. This is what causes the fingers grip on wet surfaces become stronger.
Changizi and his team studied 28 pictures that wrinkly fingers because of the water. The team found similarities in the observed pattern of unconnected long canal which is a ramification of the above point the finger.
When we emphasize the finger, place the pressure from the fingertips to the back. In contrast to the side of the finger where the water can flow easily, the flat part of the finger-like plateau which is where water can stagnate.
Wrinkles are formed on the plains is because, "That's where the channel is formed to drain the water," said Changizi. He will test the hypothesis is to see if people are wrinkly fingers can grip better in wet conditions.