For almost 120 years chiropractic has been based on the idea that chiropractic adjustments help people live healthier, happier more active lives by removing interference to the nervous system. Chiropractors have also placed a lot of emphasis on specificity – the idea that the line of drive of the adjustment and the amount of preload applied in setting up for the adjustment are incredibly important aspects of the art of the adjustment. This study aims to add to the understanding of these two ideas by measuring the effect of chiropractic adjustments to adjustments using different preload, force and line of drive.

Most recent theories on the mechanism of chiropractic adjustments emphasise the central role of the thalamus. Its function includes relaying sensation, spatial sense, and motor signals to the cerebral cortex, along with the regulation of consciousness, sleep, and alertness. Since the thalamus serves as an integration and relay site for neural messages sent from the rest of the body, it becomes an excellent location to study the sensory effects of the spinal adjustment.

This study will use electrophysiological recording techniques to record the response from neurons in the thalamus before and after a spinal adjustment has been given to a rat vertebra in the lower back.

Grant Value: $19,465
Chief Investigator: Dr William Reed – Palmer College of Chiropractic
Status: Complete

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