The Calculation of Maximum Electric Field Intensity in Brain Tissue Stimulated by a Current Pulse through a Microcoil via Capacitive Coupling
The purpose of this paper is to calculate the maximum electric field in the brain tissue surrounding a microcoil. The microcoil is represented as a wire coupled capacitively to the surrounding tissue. For a 1 mA, 3 kHz current in the wire, the value of the electric field intensity in the tissue is a...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-04-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/14/7/2994 |
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| author | Mohammed Alzahrani Bradley J. Roth |
| author_facet | Mohammed Alzahrani Bradley J. Roth |
| author_sort | Mohammed Alzahrani |
| collection | DOAJ |
| description | The purpose of this paper is to calculate the maximum electric field in the brain tissue surrounding a microcoil. The microcoil is represented as a wire coupled capacitively to the surrounding tissue. For a 1 mA, 3 kHz current in the wire, the value of the electric field intensity in the tissue is approximately 4 mV/m. The intensity of the electric field is proportional to the frequency, the capacitance per unit area, and the square of the wire length. The electric field produced by this coil by electromagnetic induction is in the order of 0.002 mV/m. Therefore, the electric field produced by capacitive coupling is much greater than the electric field produced by induction. Methods to distinguish between capacitive and magnetic stimulation are discussed. |
| first_indexed | 2024-04-24T10:48:40Z |
| format | Article |
| id | doaj.art-43e7281eadc34df58c2ee6cbf083d55a |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-04-24T10:48:40Z |
| publishDate | 2024-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-43e7281eadc34df58c2ee6cbf083d55a2024-04-12T13:15:24ZengMDPI AGApplied Sciences2076-34172024-04-01147299410.3390/app14072994The Calculation of Maximum Electric Field Intensity in Brain Tissue Stimulated by a Current Pulse through a Microcoil via Capacitive CouplingMohammed Alzahrani0Bradley J. Roth1Department of Physics, Oakland University, Rochester, MI 48309, USADepartment of Physics, Oakland University, Rochester, MI 48309, USAThe purpose of this paper is to calculate the maximum electric field in the brain tissue surrounding a microcoil. The microcoil is represented as a wire coupled capacitively to the surrounding tissue. For a 1 mA, 3 kHz current in the wire, the value of the electric field intensity in the tissue is approximately 4 mV/m. The intensity of the electric field is proportional to the frequency, the capacitance per unit area, and the square of the wire length. The electric field produced by this coil by electromagnetic induction is in the order of 0.002 mV/m. Therefore, the electric field produced by capacitive coupling is much greater than the electric field produced by induction. Methods to distinguish between capacitive and magnetic stimulation are discussed.https://www.mdpi.com/2076-3417/14/7/2994magnetic stimulationcapacitive couplingneural stimulation |
| spellingShingle | Mohammed Alzahrani Bradley J. Roth The Calculation of Maximum Electric Field Intensity in Brain Tissue Stimulated by a Current Pulse through a Microcoil via Capacitive Coupling Applied Sciences magnetic stimulation capacitive coupling neural stimulation |
| title | The Calculation of Maximum Electric Field Intensity in Brain Tissue Stimulated by a Current Pulse through a Microcoil via Capacitive Coupling |
| title_full | The Calculation of Maximum Electric Field Intensity in Brain Tissue Stimulated by a Current Pulse through a Microcoil via Capacitive Coupling |
| title_fullStr | The Calculation of Maximum Electric Field Intensity in Brain Tissue Stimulated by a Current Pulse through a Microcoil via Capacitive Coupling |
| title_full_unstemmed | The Calculation of Maximum Electric Field Intensity in Brain Tissue Stimulated by a Current Pulse through a Microcoil via Capacitive Coupling |
| title_short | The Calculation of Maximum Electric Field Intensity in Brain Tissue Stimulated by a Current Pulse through a Microcoil via Capacitive Coupling |
| title_sort | calculation of maximum electric field intensity in brain tissue stimulated by a current pulse through a microcoil via capacitive coupling |
| topic | magnetic stimulation capacitive coupling neural stimulation |
| url | https://www.mdpi.com/2076-3417/14/7/2994 |
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