Acoustically and electrically evoked responses of the human cortex before and after cochlear implantation.
Multi-channel auditory evoked potentials (AEP) were recorded before and after cochlear implantation (CI) from a patient suffering from severe high frequency hearing loss with residual, but highly fluctuating hearing around 250 Hz. Immediately after CI activation early components of the N1 were present. Later N1 components developed during the use of CI. The unique result of this single case study is the concordance of the cortical AEP pattern obtained by native and artificial peripheral stimulation, which can be regarded as an indicator for the adequate function of the CI.
Pantev
C
C
Rotman Research Institute for Neuroscience, Baycrest Centre for Geriatric Care, University of Toronto, 3560 Bathurst Street, Toronto, Ontario, Canada M6A 2E1. pantev@rotman-baycrest.on.ca
Ross
B
B
Wollbrink
A
A
Riebandt
M
M
Delank
K W
KW
Seifert
E
E
Lamprecht-Dinnesen
A
A
D000161:Acoustic Stimulation; D001303:Auditory Cortex / Q000502:physiology*; D003054:Cochlear Implants; D004558:Electric Stimulation; D005072:Evoked Potentials, Auditory; D006316:Hearing Loss, High-Frequency / Q000503:physiopathology / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D013067:Speech Perception