Temporary Threshold Shift (TTS) for FM Tone and Steady Tone

Abstract

The human auditory system is not equipped to handle prolonged exposure to high intensity sounds. For reasons not clearly known sensitivity of hearing declines. Researchers are trying to identify the mechanisms responsible for post stimulatory decline in auditory sensitivity and its subsequent return to pre-exposure level. The understanding of mechanism involved in auditory fatigue will improve our understanding of auditory physiology in normals and pathophysiology in noise induced hearing loss (NIHL). The most common index for auditory fatigue is temporary threshold shift has generated a number of interesting investigations both experimental and clinical and perhaps been the most studied after effect of auditory stimulation.