Understanding Intentions: Through the Looking Glass
-- Kiyoshi Nakahara and Yasushi Miyashita, Science 29 April 2005: Vol. 308. no. 5722, pp. 644 - 645.
A class of neurons in the brain called "mirror neurons" may be crucial for understanding motor actions. Mirror neurons are activated not only during the execution of a particular action, but also during observation of that action carried out by someone else.