How is a temporary threshold shift (TTS) characterized?

A temporary threshold shift (TTS) is characterized as an STS (Standard Threshold Shift) that resolves on a follow-up test after a period of auditory rest. This condition typically occurs after exposure to loud noises, where hearing sensitivity is temporarily reduced. The individual may experience a decrease in auditory acuity; however, this impairment is not permanent and often returns to baseline following a sufficient period of rest from the offending noise source.

When evaluating hearing over time, it is important to monitor for shifts in thresholds. The identification of a TTS indicates that while immediate hearing thresholds may have temporarily declined, the underlying auditory function remains intact and capable of recovery. This contrasts with permanent shifts in hearing capability that signal irreversible damage to the auditory system.

Thus, understanding TTS is crucial for hearing conservation programs and is an essential part of monitoring and managing hearing health, particularly in environments with high noise exposure.