tES Electrodes, Ring

Ring electrodes are most commonly used in High Definition tES applications as their distinctive ‘doughnut’ shaped design allows for better control over the distribution and direction of current. By restricting the electrical current to flow between the inner and the outer ring, this helps clinicians and researchers shape the electric field more accurately than standard electrode setups. This design highly concentrates the electric field directly beneath the target site rather than allowing it to spread widely across the scalp and cortex, making stimulation more precise, accurate and stronger for the intended brain region.