Back Pain
Just as there are nerve tracts that carry pain signals
upward to the brain, there are also tracts coming down from the brain that
regulate the sensitivity of the spinal cord and thus determine how much pain we
perceive. These tracts can amplify pain – making a trivial stimulation seem
terrible – and can block it, which probably explains why quarterbacks and combat
soldiers can carry out remarkable activities, and only after some time realize
that they’ve been injured.
Back Pain
Back Pain
Back Pain
Back Pain
Back Pain
Back Pain
Back Pain
Back Pain
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