Administering Stimulation Using Coil (image) Northwestern University Share Print E-Mail Caption A member of Joel Voss' lab administers transcranial magnetic stimulation (TMS) using a black magnetic stimulating coil (or wand) to a mock study participant. Credit Northwestern University Usage Restrictions Please credit Northwestern University. Share Print E-Mail 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.