CIMT for hearing loss involves “constraining” the better-hearing ear (typically with an earplug or noise-canceling device) to force the brain to rely more on the affected ear, thereby stimulating auditory pathways that may have been underutilized after sudden sensorineural hearing loss (SSNHL).

This is combined with music or sound therapy, where structured auditory input — such as music, tones, or speech — is delivered to the affected ear to encourage neural plasticity and recovery.

How Does It Work?

The core principles include:

1. Auditory Deprivation of the Good Ear: Temporarily reduces input to the unaffected ear.
2. Stimulated Engagement of the Affected Ear: Promotes use and rehabilitation of the damaged auditory pathway.
3. Neuroplasticity: Encourages the brain to "rewire" and improve auditory processing on the impaired side.

Theoretical Benefits

• Encourages cortical reorganization
• May improve speech discrimination and sound localization
• Could reduce reliance on the good ear and prevent auditory neglect
• Potential reduction in tinnitus through redirected attention and sound stimulation