Wednesday, August 01, 2012

Feedback system for muscle movement

The other night I dozed off on my study table. In that process I pushed by pen off the table. To my surprise even in that state of mind I had already realized the fall and stretched my hand to intercept the trajectory so that the pen could be caught before reaching the floor.

Well let me clarify first that I am not the person under the cloak of Spiderman.

What was revealing to me that our brain deals with movement control using a feedback system. Each movement effort expects a feedback. While wide awake this loop is so fast that we never realize its presence. But in that half sleepy state of mind, it revealed how that feedback cycle works by anticipating the trajectory of the fall in future.

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