Meditation and the Body/Mind connection

Every Sunday morning if I get up early enough I listen to a radio show on my local NPR station.
called Being with Krista Tippet. You can also listen to this program on line. I love radio; especially intelligent and mind opening discussions and stories. The following is an interview withe Arthur Zajonc who is a physics professor at Ameherst College in MA. He has been a contempative; a early meditator before the west began widely focusing on the eastern form. He studied Rudolph Steiner's work in the early days. He was diagnosed with Parkinsons a year ago and the following quote from the interview addresses this. Since I have a brother with Parkinsons, I was very interested.
"There are two main types of meditation and both of them are part of my life, which one is a concentration and the other is what I call open awareness. It's a very open presence. In the concentration phase, tremors actually worsened. You have a line of poetry or from scripture or an image and you bring your full undivided single-pointed attention to that content. But as we're straining mentally to do that, the hand begins to tremor more. And then when you release the image and become very still and quiet and open yourself wide, the hand slowly calms to the point where indeed your whole body feels at ease and the tremor disappears. Interesting… I can see that the mind and the body are so delicately attuned to one another that these practices affect the Parkinson's state itself. … So here's the question I pose to myself. Is it possible to be alive, active in the world, and yet have such calm, such kind of inner openness and presence that one can lead a life, at least in part, that is an expression of that quality of meditative quiescence that's on the one hand quite alert and on the other hand, completely at ease, completely at rest. … And I'll keep you posted as to whether that comes out all right or not."