Chapter 4: How We Move

In medical schools and textbooks, proprioception is defined as ‘body position sense’—the ability to know where our body is at all times.  In other words, proprioception refers to our uncanny capacity to know almost exactly where our arm, leg, or finger is, without having to look at it. With proprioception, you can estimate the angle …

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Chapter 5: Reflexes

If our awareness of the outside world comes from our senses, our reactions to the outside world are controlled by our reflexes.  When we think of reflexes, we typically think of an unexpected reaction to an outside stimulus. We might duck in response to a loud sound, dodge if we see something coming towards us, …

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