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Transcranial magnetic stimulation (TMS) is an intriguing technology for investigating functions in the brain. Magnetic coil in transcranial magnetic stimulation devices can produce brief, strong magnetic pulses to induce electric fields in the brain which modulate neural activity. Stimulation intensity, field attenuation in depth and focality are the keys of efficient functional magnetic stimulations...
Electrical impedance tomography (EIT) is a noninvasive technique that permits estimation of resistivity within a subject by reconstructing from boundary measurements. The head electrical properties based on EIT technology have been studied by many authors and in most of this work the realistic head model has been considered without contact impedance between the electrodes and the scalp. It is interesting...
Electrical impedance tomography (EIT) is a newly developed technique by which impedance measurements from the surface of an object are reconstructed into impedance image. But in the initial stage, the EIT problem is regarded as the two-dimensional EIT problem, which ignores too much important information and makes it can't give the exact spatial information of the place where the impedance has changed...
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