Transcranial magnetic stimulation (TMS) is a relatively new neurological tool for treating conditions such depression and Parkinson’s disease, but because of technological challenges there’s a lot of work that’s being done to improve the delivery systems to be both safer and more precise. TMS requires using a coil to generate a rapidly changing magnetic field that induces electrical eddy currents within the brain, non-invasively activating neurons that are associated with whatever condition is being researched or treated. One major problem is that current TMS system designs can only generate sufficient eddy currents in the brain in wide areas and to a depth of about 2 cm before unpleasant side effects start to be observed, so researchers at University of Michigan engineered a new device that provides more signal focus and penetrates deeper than before.
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