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. 2019 Jun 20;14(6):e0218293. doi: 10.1371/journal.pone.0218293

Fig 2. Multi-layered concentric model for noninvasive deep brain stimulation.

Fig 2

(A) Three-dimensional view of electrodes and head model, including skin, skull, CSF and brain. (B) Cross-sectional view of electrodes arrangement. Electrodes 1A, 2A, …, 8A represent output electrode, electrodes 1B, 2B, …, 8B represent return electrode. Each channel (CH1, CH2, …, CH8) consists of an output and a return electrode. For example, channel CH1 connects electrode 1A (output electrode) and 1B (return electrode).