permanent threshold shift
4.65 permanent threshold shift; PTS. Permanent increase in the threshold of audibility. Unit, decibel, (dB). Annotation Permanent threshold shift implies permanent injury to the structures of the inner ear or central auditory system, or both.
TTS
4.64 temporary threshold shift; temporary hearing loss; TTS. Temporary increase in the threshold of audibility caused by exposure to high-intensity acoustic stimuli or ototoxic drugs. Unit, decibel, (dB). Annotation 1 Temporary threshold shift is by definition reversible as measured by audiometric techniques. Annotation 2 Temporary threshold shift may be superimposed on a permanent or “persistent” threshold shift.
temporary hearing loss
4.64 temporary threshold shift; temporary hearing loss; TTS. Temporary increase in the threshold of audibility caused by exposure to high-intensity acoustic stimuli or ototoxic drugs. Unit, decibel, (dB). Annotation 1 Temporary threshold shift is by definition reversible as measured by audiometric techniques. Annotation 2 Temporary threshold shift may be superimposed on a permanent or “persistent” threshold shift.
temporary threshold shift
4.64 temporary threshold shift; temporary hearing loss; TTS. Temporary increase in the threshold of audibility caused by exposure to high-intensity acoustic stimuli or ototoxic drugs. Unit, decibel, (dB). Annotation 1 Temporary threshold shift is by definition reversible as measured by audiometric techniques. Annotation 2 Temporary threshold shift may be superimposed on a permanent or “persistent” threshold shift.
threshold shift
4.63 threshold shift. Change, usually an increase, in the threshold of audibility at a specified frequency. Unit, decibel (dB). Annotation 1 In masking, threshold shift is the difference in decibels between the masked threshold and the threshold of audibility. Annotation 2 The term “threshold of audibility” implies a previously determined reference level of hearing.