Audiologist Ahsen Kartal Özcan earned the title of "Doctor" by successfully defending her thesis titled "Assessment of Memory Function, Listening Effort and Multisensory Integration in Cochlear Implant Users," supervised by Prof. Dr. Ali Cemal Yumuşakhuylu, within the Doctoral Program in Audiology and Speech Disorders at the Marmara University Institute of Health Sciences.
We congratulate our esteemed colleague Dr. Ahsen Kartal Özcan on this achievement and wish her continued contributions to audiology and to the world of science.
Aim: To compare memory functions, listening effort, multisensory integration and Acoustic Change Complex (ACC) responses in cochlear implant (CI) users and normal-hearing individuals, and to reveal the relationships among them.
Materials and Methods: The study included prelingual (n=25) and postlingual (n=25) CI users and age-matched normal-hearing (n=25) individuals. Memory functions were assessed with an auditory-visual digit span test, listening effort with behavioral and subjective methods, and multisensory integration was examined under various conditions including the McGurk effect.
Findings: Significant differences were found between normal-hearing individuals and CI users in memory, listening effort, multisensory integration and ACC. CI users largely displayed a compensatory visual-dominance strategy rather than fusion perception.
Conclusion: CI users performed worse than normal-hearing individuals in auditory memory and behavioral listening effort; prolonged ACC latencies pointed to difficulty in cortical auditory discrimination.
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