He says his latest album "I Am What I Am" is more personal and a little more from the heart than earlier records.

VOA: special.2010.06.11

Now, in the heart action potential is moving from one heart muscle cell to another over the surface of the heart.

心脏中的动作电位,沿相邻心肌细胞在心脏表面传递

耶鲁公开课 - 生物医学工程探索课程节选