Objectively Measuring Subjective Pain
Nov 16 at 6:06pm by Aileen
Doctors involved in treating pain have long been stifled by the subjectivity of pain – relying on patients to rate their own pain, but having no objective way to measure how intense the pain really is. The journal Nature reported on November 14 that they have discovered a signal from the brain that does objectively correlate with the amount of pain a person is experiencing.
The researchers from Oxford University in Britain believe that the signal couldbe used to refine pain relief techniques, offering better treatment for people in pain. The signal is identified as low frequency brain waves emanating from two regions deep in the brain. The more pain being experienced, the longer the waves last.
“It is an objective measure that correlates with a subjective measure,” said Morten Kringelbach, head of the research team. They hope this signal could help refiine deep-brain stimulation for chronic pain management through the development of a stimulator that only kicks in when these low frequency signals begin.
The ability to treat chronic pain directly without the use of drugs that affect consciousness or depress general physiology would be a significant advancement in medical care, alleviating the suffering of millions of people every year.
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