Posted on 10/07/2015 1:27:02 PM PDT by SunkenCiv
The torso (the part of the body that includes the ribcage, belly and pelvis) of chimpanzees has long been thought to be a rigid block, best suited for a life of tree climbing. Humans, on the other hand, have long and flexible torsos that aid in walking by allowing us to rotate our upper body in the opposite direction of our lower body. The findings from the paper, titled "Surprising trunk rotational capabilities in chimpanzees and implications for bipedal walking proficiency in early humans," changes the evolutionary view of how early human ancestors walked and what they were able to do.
"During walking, we actually observed as much rotation within the torsos of chimpanzees as in humans," said Nathan Thompson, lead author and a PhD student in the Department of Anatomical Sciences at Stony Brook University. "This means that the widely accepted assumptions in the scientific community about how the chimpanzee torso works based on the skeleton alone are incorrect. Our results also point to the notion that a limitation to upright walking that we thought affected Lucy and other early human ancestors probably was not a limitation at all."
The research team used high-speed cameras to track and compare how the torsos of humans and chimpanzees actually moved during bipedal walking. They studied the movements by way of three-dimensional kinematic analyses and computer-generated comparisons.
They discovered that the main difference between human and chimpanzee bipedalism is that chimps swing their hips much more.
"Only when our early ancestors were able to reduce this hip rotation were their upper bodies able to play a human-like role in promoting efficient bipedal walking," said Thompson. "When this actual transition occurred is still an open question."
(Excerpt) Read more at sb.cc.stonybrook.edu ...
This image depicts pelvis and ribcage rotations during bipedal locomotion. Despite differences in overall motion, there is as much mobility between the pelvis and ribcage in humans as in chimpanzees, suggesting more human-like abilities in our earliest ancestors than previously thought. Credit: Nathan Thompson, Lucille Betti-Nash, and Deming Yang.
Duhhhhh Ya think??!!
I see Mooche joke material in here, but the PC church lady mod is likely ready to pounce instantly..........
interesting
The link between humans and apes will never happen, because there isn’t one.
GENESIS 1:26-27
26 Then God said, “Let us make mankind in our image, in our likeness, so that they may rule over the fish in the sea and the birds in the sky, over the livestock and all the wild animals,[a] and over all the creatures that move along the ground.”
27
So God created mankind in his own image,
in the image of God he created them;
male and female he created them.
” but the PC church lady mod is likely ready to pounce instantly”
Isn’t she spatial? (Southern accent!)
Oh yeah, and the dancing.
from the FRchives:The Scars of Evolution:"The most remarkable aspect of Todaro's discovery emerged when he examined Homo Sapiens for the 'baboon marker'. It was not there... Todaro drew one firm conclusion. 'The ancestors of man did not develop in a geographical area where they would have been in contact with the baboon. I would argue that the data we are presenting imply a non-African origin of man millions of years ago.'"
What Our Bodies Tell Us
About Human Origins
by Elaine Morgan
Aww.... Go ahead and let fly and don’t worry bout it
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