Athens Review, Athens, Texas

Breaking News

Community News Network

January 11, 2013

Wrinkles help fingers get a grip

(Continued)

The team's results are "very interesting," says Xi Chen, a biomechanical engineer at Columbia University who has analyzed how the skin on fingertips buckles when vasoconstriction causes underlying tissues to shrink. "They show that the wrinkles have a biological function."

"I'm happy to see the team has investigated this," adds Romann Weber, a mathematician at Rensselaer Polytechnic Institute in Troy, New York, and a member of the group that proposed the wrinkles-as-rain-treads hypothesis in 2011. The results mirror those of the limited number of similar preliminary tests Weber and his colleagues had conducted and "are a good practical demonstration of the benefits that wrinkles provide," he notes. Smulders's results "are encouraging, and consistent with our rain-tread hypothesis," adds Mark Changizi, a theoretical neurobiologist at 2AI Labs in Boise and senior co-author with Weber of the 2011 journal paper.

Yet neither the original research nor that of Smulders's team pin down precisely how the wrinkling enhances grip performance, Changizi says. Besides channeling water away from the fingertips-and, in essence, preventing small-scale hydroplaning of skin across slick objects-it's possible that long-term exposure to water temporarily robs the skin of body oils, thereby boosting the skin's friction and enhancing grip.

Another possibility, Chen says, is that wrinkled skin spreads to provide a larger contact area when fingers are touching an object. Further experiments may discern whether one or more of these factors are responsible for improvements in grip performance.

It's also unclear whether wrinkles evolved to help us grasp underwater objects, or whether they're simply a byproduct of a nervous system quirk. Weber says finding out whether such puckering occurs in other primates might shed light on the evolutionary origins of the phenomenon.

Text Only
Community News Network
  • Screen Shot 2014-07-31 at 2.12.55 PM.png VIDEO: Five-year-old doesn't want her brother to grow up

    Sadie, an adorable 5-year-old from Phoenix, wants her brother to stay young forever, so much so that her emotional reaction to the thought of him getting older has drawn more than 10 million views on YouTube.

    July 31, 2014 1 Photo

  • lockport-police.jpg Police department turns to Facebook for guidance on use of 'negro'

    What seems to be a data entry mistake by a small town police department in western New York has turned into a social media firestorm centered around the word "negro" and whether it's acceptable to use in modern society.

    July 31, 2014 3 Photos

  • The virtues of lying

    Two computational scientists set out recently to simulate the effects of lying in a virtual human population. Their results, published in the Proceedings of the Royal Society B, show that lying is essential for the growth of a cohesive social network.

    July 31, 2014

  • Sunburn isn't the only sign of summer that can leave you itchy and blistered

    You've got a rash. You quickly rule out the usual suspects: You haven't been gardening or hiking or even picnicking, so it's probably not a plant irritant such as poison ivy or wild parsnip; likewise, it's probably not chiggers or ticks carrying Lyme disease; and you haven't been swimming in a pond, which can harbor the parasite that causes swimmer's itch.

    July 30, 2014

  • Survey results in legislation to battle sexual assault on campus

    Missouri U.S. Sen. Claire McCaskill joined a bipartisan group of senators Wednesday to announce legislation that aims to reduce the number of sexual assaults on college campuses.

    July 30, 2014

  • An alarming threat to airlines that no one's talking about

    It's been an abysmal year for the flying public. Planes have crashed in bad weather, disappeared over the Indian Ocean and tragically crossed paths with anti-aircraft missiles over Ukraine.

    July 30, 2014

  • Sharknado.jpg Sharknado 2 set to attack viewers tonight

    In the face of another "Sharknado" TV movie (the even-more-inane "Sharknado 2: The Second One," premiering Wednesday night on Syfy), there isn't much for a critic to say except to echo what the characters themselves so frequently scream when confronted by a great white shark spinning toward them in a funnel cloud:
    "LOOK OUT!!"

    July 30, 2014 1 Photo

  • 20140729-AMX-GIVHAN292.jpg Spanx stretches into new territory with jeans, but promised magic is elusive

    The Spanx empire of stomach-flattening, thigh-slimming, jiggle-reducing foundation garments has expanded to include what the brand promises is the mother of all body-shaping miracles: Spanx jeans.

    July 29, 2014 1 Photo

  • Medical marijuana opponents' most powerful argument is at odds with a mountain of research

    Opponents of marijuana legalization are rapidly losing the battle for hearts and minds. Simply put, the public understands that however you measure the consequences of marijuana use, the drug is significantly less harmful to users and society than tobacco or alcohol.

    July 29, 2014

  • linda-ronstadt.jpg Obama had crush on First Lady of Rock

    Linda Ronstadt remained composed as she walked up to claim her National Medal of Arts at a White House ceremony Monday afternoon.

    July 29, 2014 1 Photo

Biz Marquee
AP Video
Florida Panther Rebound Upsets Ranchers Small Plane Crash in San Diego Parking Lot Busy Franco's Not Afraid of Overexposure Fighting Blocks Access to Ukraine Crash Site Dangerous Bacteria Kills One in Florida Workers Dig for Survivors After India Landslide Texas Scientists Study Ebola Virus Smartphone Powered Paper Plane Debuts at Airshow Southern Accent Reduction Class Cancelled in TN Raw: Deadly Landslide Hits Indian Village Obama Chides House GOP for Pursuing Lawsuit New Bill Aims to Curb Sexual Assault on Campus Russia Counts Cost of New US, EU Sanctions 3Doodler Bring 3-D Printing to Your Hand Six PA Cops Indicted for Robbing Drug Dealers Britain Testing Driverless Cars on Roadways