By opposing poles you mean 2 north and 2 south?
Yup,"four permanent magnets arrayed with alternating polarity in a hypoallergenic
plastic case"
In contrast, the device I use has a central pole surrounded by the alternate polarity, a cylinder surrounded by a ring.
The effects are thought to be due to movement within the steep static field gradients.
You might want to look at what Stefan Engstrom had to say in the
"bioelectromagnetics" newsgroup on this on, as well.
Yes, I've been following it.
Best wishes
--
John Bain
UK TV Sound Director, magnotherapy user & distributor
http://members.aol.com/JBainSI/Magnotherapy.html
Surround Sound for Television