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jake-head-shot.jpgJake Young is a MD/PhD student at Mount Sinai School of Medicine in NYC getting a PhD in Behavioral Neuroscience. He holds a BS and MS in Biological Sciences from Stanford University. If a volcano were to erupt Pompei-style in Central Park, his body would be preserved in a scoliotic posture over his lab desk. Archeaologists would later conclude that he spent most of his day training rats to perform tricks, until he went blind building electrical equipment by hand using a dissecting microscope. But, still, he died happy...because science is cool.

Pure Pedantry is a blog about science -- social sciences and otherwise -- as well as academic and scientific culture. No one can live on science alone, so I also like to dwell on pop culture, periodically explore the humanities, and indulge in other types of geeky goodness.

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How Woodpeckers' heads don't explode

Category: Aminals
Posted on: January 10, 2007 12:18 PM, by NotoriousLTP

Everyone hates on the Ig Nobel awards, but I think they are pretty cool. It is a lot of science that would go totally unrecognized. Just because it has no practical relevance whatsoever doesn't mean it isn't cool. Take this work on how woodpeckers cushion their heads so that they don't get hurt when drilling into trees:

woodpecker.jpg

Last fall, [Ivan] Schwab [from UC Davis] was honored with an Ig Nobel award, the irreverent version of the Nobel Prize, for his research on how woodpeckers avoid headaches, published in the British Journal of Ophthalmology.

Along with their straight-as-an-arrow strikes at the tree, which safeguards against head trauma, birds' bodies are designed to absorb the impact.

One millisecond before a strike comes across the bill, dense muscles in the neck contract, and the bird closes its thick inner eyelid. Some of the force radiates down the neck muscles and protects the skull from a full blow. A compressible bone in the skull offers cushion, too.

Meanwhile, the bird's closed eyelid shields the eye from any pieces of wood bouncing off the tree and holds the eyeball in place.

...

Bird brains also remain rigid during head banging. Injuries to the human head make our brains bounce back and forth in the cerebral spinal fluid, bathing the organ. But woodpeckers have virtually none of this fluid.

I want special cushioning eyelids and low amounts of CSF. I keep walking into the door of my office, and I think it would help.

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Comments

1

Granted, this is a "popular press" article about science, so it's necessarily simplistic, but it would have been nice for the authors to have avoided using the phrase " are designed to ...". It feeds right into the standard Behe talking point of "appearance of design == evidence of design".

Posted by: Joe Shelby | January 10, 2007 1:34 PM

2

I like the Ig Nobels.

Posted by: Ian Findlay | January 10, 2007 2:05 PM

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