Brain Mapping of Tools

I'm sure most people can think of anecdotes of the "extension of your arm" experience, but it's cool to see some real evidence behind it.  Seeing this kind of adaptability gives me hope that the human brain might grow up some day, after all.

Tools are 'temporary body parts'
BBC News

The brain represents tools as extensions to the body, according to researchers writing in Current Biology. After the use of a grasping tool, participants asked to grasp an object with their own hands did so more slowly and sluggishly. Blindfolded participants also overestimated the length of their tool-using arm after the exercise. The research seems to confirm a century-old hypothesis that the brain models tools as parts of the body...

http://news.bbc.co.uk/2/hi/science/nature/8112873.stm