Details

Autor(en) / Beteiligte

• Lee, Sangjun
• Park, Jimin
• Choi, Da Som
• Lee, Chany
• Im, Chang-Hwan

Titel

Multipair transcranial temporal interference stimulation for improved focalized stimulation of deep brain regions: A simulation study

Ist Teil von

• Computers in biology and medicine, 2022-04, Vol.143, p.105337-105337, Article 105337

Ort / Verlag

United States: Elsevier Ltd

Erscheinungsjahr

2022

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Temporal interference stimulation (TIS) has been proved to be effective in stimulating deep brain regions while avoiding the stimulation of neocortical regions in animal experiments. In the traditional TIS, two alternating currents are injected with different frequencies via two electrode pairs attached to the scalp. In the human brain, however, it is difficult to achieve a focal stimulation of deep brain structures due to the high complexity of human brain structures. In this study, we hypothesized that the use of multiple electrode pairs may contribute to the more focalized delivery of temporal interference (TI) currents to the target site in the deep area of the brain. Based on this hypothesis, we proposed a novel multipair TIS method that employs more than two electrode pairs for improved focalized stimulation of the deep brain region (in this study, the head of the right hippocampus). Three realistic finite element models were used to validate the feasibility of the proposed multipair TIS. Additional electrode pairs were sequentially added to the conventional two-electrode pairs with the aim of maximizing the delivery of TI currents to the target while minimizing TI currents in the neocortical regions. The results confirmed that the multipair TIS provides better focalized stimulation than the conventional two-pair TIS for all three head models. It is expected that the proposed multipair TIS can be used to enhance the effectiveness of noninvasive deep brain stimulation. •Multipair temporal interference stimulation (TIS) with more than two electrode pairs was proposed.•Simulation with realistic finite element head models was conducted to validate the feasibility of the proposed multipair TIS.•Multipair TIS led to more focalized stimulation of deep brain regions compared to the conventional two pair TIS.•Multi-pair TIS is expected to be used to enhance the effectiveness of noninvasive deep brain stimulation.