Transcranial Magnetic Stimulation (image) Ruhr-University Bochum Caption A current-carrying coil (top left) generates short lasting (~300 microseconds) magnetic fields which induce electric currents in the cortex. This enables to functionally stimulate or inhibit specific brain regions, here illustrated in a schematic diagram by means of functional magnetic resonance imaging. Credit Nick Davis Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.