New Research Reveals the Intelligence of the Spinal Cord
Here in the world of Chiropractic Care, the spinal cord has always held our attention. The steady advancement of research shows us that when we adjust the spine, we change the structure and function of the brain. We may see the cortical drive to the muscles and reaction times improve. We may also restore the joint position sense and increase proprioception. These are documented findings in the world of chiropractic. But where does the spinal cord end, and the brain begin? To many a neurology buff, they are but one unit.
While chiropractic researchers have had their eyes firmly fixed on what happens in the brain when we adjust the spine, the word of non-chiropractic research has made an interesting discovery that may be applicable to our field: the spinal cord is smarter than once thought.
A recent study titled, “Spinal stretch reflexes support efficient hand control”, will feature in the journal “Nature and Neuroscience” . The study had participants engage with specialized robotics technology (a specific exoskeleton) and were asked to maintain their hands in a target position. The robot then bumped the hand out of position and the participants had to bring their hand back.
By measuring the latency – or ‘lag’ – in the response, they were able to determine whether the processing was happening in the brain or the spinal cord. In a press release from the University of Western Ontario, lead researcher Jeff Weiler said, “We found that these responses happen so quickly that the only place they could be generated from is the spinal circuits themselves. What we can see, is these spinal circuits don’t really care about what is happening at the individual joints – they care about where the hand is in the external world and generate a response that tries to put the hand back to where it came from ”.
The stretch reflex generated by the spinal cord was, up until this point, thought to be a lot more limited. This study offers new indications that the spine can actually control the hand in space, a fact that adds greatly to the existing understanding of neurocircuitry. This is a factor that could be significant for rehabilitation purposes, according to the study’s authors .
The Chiropractic Angle – spinal cord intelligence
While the study clearly exists outside of the chiropractic paradigm, it does provide interesting insight into the organ we are most concerned with: the brain and the spinal cord. If what we do increase the health, mobility, and optimal function of the spine, then it’s easy to see a potential connection between chiropractic and improving the spinal stretch reflex.
There is more research to be done, and it would certainly be interesting to see a study that brought chiropractic adjustment into the mix, but this latest research certainly provides a solid rationale for us to ensure the spine and spinal cord are functioning optimally.
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