System for electrically stimulating a region located in a brain

A deep brain stimulation system for electrically stimulating a region located in a brain of a mammal, comprising

• a first pair of stimulation electrodes capable of delivering a stimulating electric alternating current at a first carrier frequency of at least 800 Hz and at a first phase;
• a second pair of stimulation electrodes capable of delivering a stimulating electric alternating current at a second carrier frequency of at least 800 Hz and at a second phase;
• a difference between the first carrier frequency and the second carrier frequency being of at least 0.5 Hz;
• the first phase being approximately equal to the second phase;
• at least a first pair of anti-stimulation electrodes capable of delivering an electric alternating current at a carrier frequency substantially equal to the first carrier frequency or the second carrier frequency or substantially equal to a multiple of the first carrier frequency or the second carrier frequency, but having a phase shift of approximately 180° as compared to the first phase and/or the second phase.