Big ring coil,125 mm
This coil is optimal for quickly stimulating the motor cortex without much effort, as it affects a larger area that is much less focal than for typical figure-of-eight coils. It is mainly used for stimulating the motor cortex, and generating motor evoked potentials (MEP). The windings have a diameter of 125 mm.
![Big ring coil,125 mm](/media/cache/80/74/807449013c5392d1f2dcdfb77f0ee8d0.jpg)