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Updated: May 5, 2026

Electrode Positioning and Montage in Transcranial Direct Current Stimulation
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モノポラー電極の静電刺激

Arvind Singh Heer1, Harlan Mantelli1, Qi Han1

  • 1Department of Chemistry, Case Western Reserve University, Cleveland, Ohio 44106-7078, United States.

Journal of the American Chemical Society
|April 17, 2025
PubMed
まとめ

研究者は単極電極 (ME) を使用してセレノ酸を元素セレニウムに還元した. この新しい電気化学技術は,刺激効率を正確に定量化し,電極表面のダイナミクスと微細構造に関する新しい洞察を提供します.

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On comparing the reactivity of silver and lead, it is observed that the two ionic species, Ag+ (aq) and Pb2+ (aq), show a difference in their redox reactivity towards copper: the silver ion undergoes spontaneous reduction, while the lead ion does not. This relative redox activity can be easily quantified in electrochemical cells by a property called cell potential. This property is commonly known as cell voltage in electrochemistry, and it is a measure of the energy which accompanies the charge...
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Controlled-potential coulometry, also known as potentiostatic coulometry, employs a three-electrode system in which the working electrode's potential is precisely regulated using a potentiostat. Platinum working electrodes are utilized for positive potentials, while mercury pool electrodes are favored for extremely negative potentials. The platinum counter electrode is separated from the analyte using a membrane or salt bridge to avoid interference in the analysis.
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Electrodeposition

Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
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Processes at Electrodes01:30

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The electrode interacts with ions in the electrolyte solution at its interface. The rate of oxidation and reduction depends on the speed at which electrons can transfer through this interface. As ions attach to or leave the electrode surface, the electrode acquires a charge, and an electrical potential forms across the interface, making the process more difficult to reach equilibrium. The charge on the electrode affects the local ion concentrations in the solution, though thermal motion...
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