A device for sensing and stimulating arrange on an ear of a subject. The device comprises a coil structure, a setting structure combined with the coil structure, and a control module coupled to the coil structure. The setting structure is configured to fix the coil structure on the ear. The control module is configured to drive the coil structure for an eddy current induction measurement to an ear measurement area, and to drive the coil structure for an electromagnetic stimulation to an ear stimulation area. The control module controls the parameters of the electromagnetic stimulation based on a measurement results of the eddy current induction measurement. |