The Relation between Electric Auditory Brain Stem and Cognitive Responses and Speech Perception in Cochlear Implant Users

  • Groenen P
  • Makhdoum M
  • Van Den Brink J
 et al. 
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Electrically evoked brainstem responses (EABR) and event-related cortical potentials were recorded in Seven postlingually deaf adults who were experienced users of a Nucleus multichannel cochlear implant. The patients were divided into two subgroups: good performers and moderate performers. Poor EABR were found in two of the moderate performers. The Wencia and amplitudes of the cortical NI-P2 complex in the good performers were within the same range as those of subjects with normal hearing, but were deviant in the group of moderate performers. This may indicate disturbed ccrhleotopical organization of the auditory cortex in the latter group. P300 measurements in the good performers showed normal latencies, whereas in the moderate performers they were prolonged. The results suggest that the outcomes of electroph3siological measurements to assess the integrity of a patient's auditory neural system on a brainstem and. a cortical level, are related to the patient's performance with the cochlear implant.

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  • P A P Groenen

  • M Makhdoum

  • J L Van Den Brink

  • M H P Stollman

  • A F M Snik '

  • P Van Den Broek '

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