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Visual Reliance in Severe Hearing Loss: Visual Evoked Potentials (VEPs) Study.
Takwa Gabr1, Ahmed Hashem2, Sherihan Rezk Ahmed3
1Audiovestibular Medicine Unit, ORL Departement, Faculty of Medicine, Kafrelsheikh University, Kafr Elsheikh 33516, Egypt.
Children with severe hearing loss benefit from visual cues, regardless of hearing aids or cochlear implants. Visual evoked potentials (VEPs) show enhanced brain responses, indicating cross-modal reorganization.
Area of Science:
- Neuroscience
- Audiology
- Ophthalmology
Background:
- Peripheral hearing loss (HL) can lead to cross-modal reorganization of the auditory cortex.
- The role of visual cues in severe HL, especially with amplification, is debated.
Purpose of the Study:
- To investigate visual evoked potentials (VEPs) in children with severe to profound HL.
- To compare VEPs in children using hearing aids (HAs) versus cochlear implants (CIs).
Main Methods:
- Three groups of children: normal hearing, HA users, and CI users.
- Evaluations included audiometry, speech discrimination, ophthalmic exams, and VEPs.
Main Results:
- Speech discrimination scores improved with visual cues in both HA and CI groups.
- VEPs showed significantly higher P100 amplitude in children with HL, particularly those with CIs.
Conclusions:
- Cross-modal reorganization is beneficial for children with severe HL.
- Both hearing aids and cochlear implants support this beneficial reorganization.
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