In tinnitus retraining therapy (TRT), the theoretical basis involves which neuroplasticity model?

• A Auditory gating deficit theory — enhancing brainstem filtering
• B Stochastic resonance theory — adding white noise to mask tinnitus permanently
• C Tonotopic reorganization reversal — electrical stimulation of auditory cortex
• D Limbic-auditory interaction model — reducing the emotional significance of tinnitus signal ✓

Explanation

TRT is based on Jastreboff's neurophysiological model: tinnitus is a neutral signal generated by the auditory system, but it gains psychological significance through conditioned limbic (emotional) and autonomic system reactions, perpetuating distress. TRT uses directive counselling (to reclassify tinnitus as a neutral signal) combined with low-level broadband sound therapy to promote habituation. The goal is not to mask tinnitus but to reduce limbic/autonomic reactions to it. Stochastic resonance and tonotopic theories describe different mechanisms.

Reference: Dhingra Diseases of Ear, Nose and Throat, 7th ed.

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Written and medically reviewed by the StethoPrep medical team.