When he was trading fours with me, improvising versus memorized, his language areas lit up, his Broca's area, which is inferior frontal gyrus on the left.
当他在跟我交换四小节的演奏时， 靠的是即兴不是记忆， 他的语言部分亮了起来，他的布洛卡区域 就是他左脑的前方下面的脑回。