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The secrets of the inner ear

2/7/2017

9 Comments

 
Peel back your skin & muscles and peer past your skull and you’d find three very important little semi-circular canals that make up your inner ear. These canals control your balance and aide in motion – and are the key to Brian Shearer, Elise, and Diana’s investigation of extant and extinct primate locomotion.
Picture
A micro-CT scanner allows you to penetrate a skull (and other things) without the very invasive and destructive process of physically opening up a skull. X-ray light is bombarded at the specimen. Bones reflect these x-rays differently according to their density, a phenomenon that allows for the creation of a three dimensional computer model. With this model or 3-D scan, bones are differentiated based on their density.
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Elise and Diana
In their search for the semi-circular canal, Elise and Diana slowly e-dissolve their 3-D skull models leaving behind only the densest bones:  ghostly teeth and the petrous, one of the densest bones in the human body and the bone that supports the semicircular canals.
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Once located, Elise and Diana, start the process of rendering or digitizing the canals. Going layer-by-layer in this 3-D model they trace the canals’ outline and contours. When completed, the team will measure the size, volume, and the orientation of each canal, metrics that correlate with modes of primate location. For example, more perpendicular angle of orientation is associated with faster swinging in primates know for their brachiation (aka arm swinging locomotion). 

The team hopes to explore the form of these semi-circular canals in both juveniles and adults across several extant (living) primates. In the end, better understanding the relationship between the form of the semicircular canals and locomotion in extant species may help paleontologist understand how extinct primates got around – simply by looking to its inner ear.
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Brian Shearer, primatologist, biological anthropologist, mentor
9 Comments
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10/11/2017 02:47:39 am

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3/3/2018 01:27:53 am

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4/18/2018 09:09:56 am

A micro-CT scanner allows you to penetrate a skull without the very invasive and destructive process of physically opening up a skull. X-ray light is bombarded at the specimen. Bones reflect these x-rays differently according to their density, a phenomenon that allows for the creation of a three dimensional computer model. With this model or 3-D scan, bones are differentiated based on their density.

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5/1/2018 03:31:39 am

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5/13/2018 04:39:07 am

That is quite complicated story but yes good for medical student. They can better understand this and it's uses. Hopefully, medical students will get useful information from that site.

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5/30/2018 01:27:04 am

I think the ear is already a secret as how it can hear things and how the hole of the inner side of it and what it really have on there.

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  • Home
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