Researchers have developed a non-invasive method for mapping the human auditory pathway, which could potentially be used as a tool to help clinicians decide the best surgical strategy for patients with profound hearing loss.
The findings, published today in eLife, highlight the importance of early interventions to give patients the ability to hear and understand speech, so that their auditory-language network can develop properly and their long-term outcomes are improved.
Currently, the primary treatments for profound SNHL are cochlear and auditory brainstem implantation, where a device is used to stimulate the peripheral cochlea or the central cochlear nucleus, respectively. Both techniques can partially restore hearing in patients, but their language development outcomes can vary. This is especially true for patients with inner ear malformations or cochlear nerve deficiencies , which contribute to 15-39% of congenital SNHL cases.
This combined methodology allowed them to investigate three key areas to inform surgical decision making: the condition of the nerve fibres in the auditory-language network of children with profound SNHL; the potential impact of IEMs and CNDs on the development of the network before surgical intervention; and the relationship between the pre-implant structural development of the network and the auditory-language outcomes following implantation.
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