Prof. Brian Butterworth - uncoupling numbers and words in the brain; dyscalculia

Prof. Brian Butterworth talks about the uncoupling of numbers and words in the brain.  Interesting.  

https://www.youtube.com/watch?v=n3x8fIdsla4

Here Prof. Butterworth talks about dyscalculia.  Very interesting  and  highly recommended.

https://www.youtube.com/watch?v=p_Hqdqe84Uc