This image represents Temporal Interference (TI) in action.

There are 2 different electrodes (I1/I2), each having a slight difference in frequency (I2=f + Δf).

The high-frequency waves will be emitted into the brain and at a certain region, a superposition will be created in which deep neurons will be able to respond to the Temporal Interference stimulation.

This is because the interfering electrical fields contain low-frequency oscillating elements, which neurons react to.