Transcranial Magnetic Stimulation Transcranial magnetic
Chapter 23, Problem 87(choose chapter or problem)
Transcranial Magnetic Stimulation Transcranial magnetic stimulation (TMS) is a noninvasive method for studying brain function, and possibly for treatment as well. In this technique, a conducting loop is held near a persons head, as shown in Figure 2344. When the current in the loop is changed rapidly, the magnetic eld it creates can change at the rate of . This rapidly changing magnetic eld induces an electric current in a restricted region of the brain that can cause a nger to twitch, bright spots to appear in the visual eld (magnetophosphenes), or a feeling of complete happiness to overwhelm a person. If the magnetic eld changes at the previously mentioned rate over an area of , what is the induced emf?
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