No such thing as a break in a curveball?

October 27th, 2009 in Medicine & Health / Neuroscience

The answer to the question of whose curveball breaks harder -- that of the Yankees' A.J. Burnett or the Phillies' Cole Hamels -- may be neither.

Zhong-Lin Lu, a professor of at USC, along with USC alumni Emily Knight and Robert Ennis and Arthur Shapiro, associate professor of at American University, developed a simple visual demo that suggests a curveball's break is, at least in part, a trick of the eye.

Their demo won the Best of the Year prize at the Vision Sciences meeting earlier this year.

Try it at http://illusioncontest.neuralcorrelate.com/2009/the-break-of-the-curveball/.

The idea is that the effect is due to the batters being forced to switch between peripheral vision and central vision during a swing.

Source: University of Southern California (news : web)

"No such thing as a break in a curveball?." October 27th, 2009. http://phys.org/news175872377.html