Gesture is a kind of motion, but it is usually generated unconciously. Some say, non-verbal communication is much more important than verbal communication in that it has the virtue of conveying even the slightest fluctuation in one's mind. Not only the body movements during the communication but also the facial gestures are none the less important factor when we are communicating in our daily lives. We are greatly dependent upon the virtues of gesture, indeed.
By the way, my research project that is now going on is intensely focusing its eyes on the nature of gesture. Unlike previous researches in this area, I am searching for the mechanisms that allow human easily understand each other's gesture in an instant time. When we consider the vast amount of information that are obtained through our eyes, we have to admit the fact that not only our eyes but also our brains are playing a vital role in understanding each other's gesture.
The brain is sometimes underestimated in its ambiguous, slow and erroneous workings compared with the state-of-the-art computer systems. But this is completely wrong. No matter how fast computers are, no matter how correct computers are, they cannot even simulate the workings of our delicate and complex mind. Admitting this fact, I am now fascinated by the fabulous mechanisms that make it possible for us to understand each other's gesture.