Abstract
M.Tech. (Chiropractic)
Background: Quantitative electroencephalogram (qEEG) is used to measure brain
wave activity. qEEG is commonly used to determine and asses neural function,
neurophysiology and neurological deficits. It is an inexpensive tool used for both diagnostic
and prognostic information. It is alleged that chiropractic manipulation affects the central
nervous system beyond the dorsal root ganglia; as well as the brain itself. Although
controversial studies are demonstrating there is an effect on brain qEEG, limited research
has looked at the detailed trends of qEEG changes caused by cervical manipulation.
Aim: The aim of the study was to determine the trends of qEEG changes caused by
cervical manipulation for the duration of 60 minutes. This could theoretically stimulate
further related research and thus redefine the existing limits of chiropractic treatment of the
central nervous system by influencing brain wave activity.
Method: A descriptive design was used to attempt to track trends on qEEG readings
before and after a chiropractic manipulation for the duration of 60 minutes. The EEG
equipment that was used for the trials was a MP 150 Biopac system. On arrival at the
Chiropractic clinic all participants were assessed as new patients and then randomly
divided into two groups of 5. Once this was completed the EEG cap was placed on the
participants head and the first of six recordings was started. Subsequent to the completion
of the first recording, the participants’ cervical spine was manipulated/ sham manipulated
(control group). The remainder of the recordings then took place at 15 minute intervals.
Results: There was a definitive difference in the readings pre- and post-manipulation for
both groups, across all three brain lobes. Group A appeared to have more consistent
predictable changes. Group B appeared to have haphazard changes. Some participants
showed more pronounced changes in brain wave activity than others.
Conclusion: The definitive changes pre- and post- manipulation readings demonstrate
that there are apparent variations in the qEEG readings post cervical manipulation...