Cross-modal plasticity in cuban visually-impaired child cochlear implant candidates: topography of somatosensory evoked potentials
نویسندگان
چکیده
منابع مشابه
Cross-modal plasticity in Cuban visually-impaired child cochlear implant candidates: topography of somatosensory evoked potentials.
INTRODUCTION Studies of neuroplasticity have shown that the brain's neural networks change in the absence of sensory input such as hearing or vision. However, little is known about what happens when both sensory modalities are lost (deaf-blindness). Hence, this study of cortical reorganization in visually-impaired child cochlear implant (CI) candidates. OBJECTIVE Assess cross-modal plasticity...
متن کاملCross-modal plasticity in deaf child cochlear implant candidates assessed using visual and somatosensory evoked potentials.
INTRODUCTION Cross-modal plasticity has been extensively studied in deaf adults with neuroimaging studies, yielding valuable results. A recent study in our laboratory with deaf-blind children found evidence of cross-modal plasticity, revealed in over-representation of median nerve somatosensory evoked potentials (SEP N20) in left hemisphere parietal, temporal and occipital regions. This finding...
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Recent work suggests that once the auditory cortex of deaf persons has been reorganized by cross-modal plasticity, it can no longer respond to signals from a cochlear implant (CI) installed subsequently. To further examine this issue, we compared the evoked potentials involved in the processing of visual stimuli between CI users and hearing controls. The stimuli were concentric circles replaced...
متن کاملSteady state evoked potentials: a new tool for the accurate assessment of hearing in cochlear implant candidates.
Precise determination of residual hearing in prospective cochlear implant candidates is essential. As the minimum age of implantation for young children has reduced, the use of objective measures of hearing has become more important. At the University of Melbourne Cochlear Im plant Clinic, steady state evoked potential (SSEP) assessments are rou tinely carried out on all candidates under the ...
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ژورنال
عنوان ژورنال: MEDICC Review
سال: 2012
ISSN: 1555-7960
DOI: 10.1590/s1555-79602012000200007