Effect of Transcutaneous Electrostimulation on Noise-Induced Temporary Threshold Shift

The effect of transcutaneous electrostimulation around the ear before and during noise exposure on noise-induced temporary threshold shift (TTS) was examined in 26 volunteers. Electrostimulation reduced TTS in the majority of cases and the reduction was statistically significant. Two possible mechanisms for this reduction are proposed: stimulation of the olivocochlear bundle and alteration of cochlear blood flow. Transcutaneous electrostimulation may be useful for prevention or treatment of noise induced hearing damage and for treatment of tinnitus.