What surprised Rizzolatti and his co-workers was that a subset of the motor command neurons also fired when the monkey watched another monkey or a researcher perform the same action.

• 但让里佐拉蒂和同事吃惊的是，当这只猕猴看到其他猕猴或研究人员展现同样的动作，运动控制神经元里的某群细胞也活化了起来。