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jake-head-shot.jpgJake Young is a MD/PhD student at Mount Sinai School of Medicine focusing in Neuroscience. He is due to graduate in 2032. He received a BS and a MS in Biological Sciences from Stanford University -- where he spent most of his time drinking heavily and building vegetable catapults instead of learning information that would now be eminently useful. When he is not failing terrifically to perform his sworn duties, he enjoys watching bad movies, ethnic food, and running.

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.

Jake is joined periodically by two wonderful guest bloggers: Kara Contreary and Kate Seip. See the About Page.

DISCLAIMERS: 1) Jake Young is not a licensed physician (yet). He is merely a medical student. The information published on this site is not intended for use in medical decision making. Please seek advice from a licensed, medical professional before making any health decisions. 2) The opinions expressed are my own or those of my co-bloggers. They do not represent the views of SEED magazine or the educational establishments we currently attend.

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« Have a Poor Diet, Blame the Kids | Main | Headache/Sex-drive link »

How Woodpeckers' heads don't explode

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

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.

Comments

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

I like the Ig Nobels.

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

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