Usefulness of magnetic resonance imaging and auditory steady-state response in the cochlear implant decision in a prelingually deaf child with a narrow internal auditory canal
✍ Scribed by Shi-Chan Kim; Young-Lan Oh; Jae-Hong Park; Yong-Man Lee; Jae Min Shin; Hak-Sun Lee
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 47 KB
- Volume
- 5
- Category
- Article
- ISSN
- 1467-0100
- DOI
- 10.1002/cii.210
No coin nor oath required. For personal study only.
✦ Synopsis
is most sensitive to neural damage. Our cortical activation study using fMRI showed the difference in response to auditory stimulation between the normal group and profound SNHL patients. For the normal-hearing group, the primary auditory cortex, which is contralateral to the normal ear, shows strong activation and the activation of the secondary auditory cortex was seldom observed. However, in the case of profound SNHL patients, the broad activation of the secondary auditory cortex, rather than primary cortex, was observed. Our results therefore seem to suggest that the neural deficits, which were found mostly in SNHL patients, cause reorganization in the auditory pathway and resulted in the broad activation of the secondary auditory cortex, which is adjacent to the primary cortex. In conclusion, our results suggest that DTI and fMRI provide very useful functional information about the auditory pathway and auditory cortex, which will make a significant contribution to the evaluation of profound hearing loss patients.