Pain Trials

Based on the theory that the right hemisphere “smooths” input and the left hemisphere detects discrepancy and Harris’s speculation that pain represents discrepancy, doctors at UCSD are conducting clinical trial by caloric (thermal) stimulation, aimed at a response in the inferior insula/parietal cortex. They are asking for those with thalamic stroke pain (Dejerine Roussy syndrome) to contact them. This is central pain following stroke.


Dear All,

I am a Neurologist working at the University of California, San Diego. I work at the Center for Brain and Cognition with Professor Ramachandran: http://psy.ucsd.edu/chip/ramabio.html

We are investigating a new treatment for Central Pain. At the moment we want to test its use specifically on patients who suffer from POST THALAMIC STROKE PAIN- also called Dejerine-Roussy Syndrome.

The treatment is called caloric vestibular stimulation and initial patient results have been very promising. Basically it involves stimulating the balance centers of the brain by irrigating the outer canal of the ear with water of different temperatures. Its only side-effect is a sensation similar to that of sea-sickness for a couple of minutes. The procedure has been used for a long time for other clinical purposes and has no known long term side-effects.

If you are interested in taking part in this study then please email me- pmcgeoch@psy.ucsd.edu

There is no charge for participating and you will receive a gratuity payment for your time.

Many thanks,