By Susan Goldenberg, The Guardian, August 22, 2008

Barack Obama, who is generally regarded as a gifted orator, would do well to find time to unwind before he delivers the speech of his lifetime at the Democratic party’s convention next week.

A new analysis of the Obama’s voice patterns and the delivery of his speeches made available to the Guardian yesterday, found the Democratic candidate somewhat restricted in his range of facial expression.

Entire article here.