Ferrite-cored Coil Research Articles

Magnetically Coupled Stimulation of the Ossicular Chain: Measures in Kangaroo Rat and Man

A ferrite core coil is used to drive a small magnet fastened to the ossicular chain in kangaroo rat and man. The cochlear potentials recorded in kangaroo rat to such a drive are the same as when acoustic stimuli are used. When magnetic coupling is used to drive the human ossicular chain, the subject hears sounds that are indistinguishable from sounds generated through earphones.