Increasingly now, week by week, the normal, unconscious feedback of proprioception was being replaced by an equally unconscious feedback by vision, by visual automatism and reflexes increasingly integrated and fluent.
This quote from Oliver Sacks beautifully encapsulates the fascinating adaptability and plasticity of the human brain. It emphasizes how our usual, unconscious sense of proprioception—the intrinsic ability to perceive the position and movement of our bodies—is not the sole means through which we navigate and interpret our surroundings. Instead, it can be progressively supplanted by visual mechanisms which themselves become automatic and reflexive. This transition hints at the brain’s remarkable capacity...