1. Brain responses to musical feature changes in adolescent cochlear implant users
- Author
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Bjørn Molt Petersen, Ethan Weed, Pascale Sandmann, Stine Derdau Sørensen, Peter Vuust, Mads Hansen, Elvira Brattico, Helsinki Collegium for Advanced Studies, Elvira Brattico / Principal Investigator, Cognitive Brain Research Unit, Department of Neuroscience and Biomedical Engineering, Aalto-yliopisto, and Aalto University
- Subjects
music perception ,medicine.medical_treatment ,Mismatch negativity ,CHILDREN ,Audiology ,Electroencephalography ,SPEECH RECEPTION ,Behavioral Neuroscience ,0302 clinical medicine ,Cochlear implant ,auditory cortex ,adolescents ,030223 otorhinolaryngology ,10. No inequality ,Original Research ,media_common ,medicine.diagnostic_test ,humanities ,Psychiatry and Mental health ,Neuropsychology and Physiological Psychology ,Neurology ,Pitch Discrimination ,mismatch negativity ,Psychology ,medicine.medical_specialty ,AUDITORY-EVOKED POTENTIALS ,515 Psychology ,media_common.quotation_subject ,behavioral disciplines and activities ,lcsh:RC321-571 ,rehabilitation ,03 medical and health sciences ,Rhythm ,cochlear implants ,TEMPORAL CUES ,Perception ,otorhinolaryngologic diseases ,medicine ,lcsh:Neurosciences. Biological psychiatry. Neuropsychiatry ,Biological Psychiatry ,PERCEPTION ,Neural correlates of consciousness ,INDEPENDENT COMPONENT ANALYSIS ,RECOGNITION ,3112 Neurosciences ,RECIPIENTS ,SOUNDS ,ELECTRIC HEARING ,music training ,Timbre ,030217 neurology & neurosurgery ,Neuroscience - Abstract
Cochlear implants (CIs) are primarily designed to assist deaf individuals in perception of speech, although possibilities for music fruition have also been documented. Previous studies have indicated the existence of neural correlates of residual music skills in postlingually deaf adults and children. However, little is known about the behavioral and neural correlates of music perception in the new generation of prelingually deaf adolescents who grew up with CIs. With electroencephalography (EEG), we recorded the mismatch negativity (MMN) of the auditory event-related potential (ERP) to changes in musical features in adolescent CI users and in normal-hearing age mates. EEG recordings and behavioral testing were carried out before (T1) and after (T2) a 2-week music training program for the CI users and in two sessions equally separated in time for normal-hearing (NH) controls. We found significant MMNs in adolescent CI users for deviations in timbre, intensity and rhythm, indicating residual neural prerequisites for musical feature processing. By contrast, only one of the two pitch deviants elicited an MMN in CI users. This pitch discrimination deficit was supported by behavioral measures, in which CI users scored significantly below the NH level. Overall MMN amplitudes were significantly smaller in CI users than in NH controls, suggesting poorer music discrimination ability. Despite compliance from the CI-participants, we found no effect of the music training, likely resulting from the brevity of the program. This is the first study showing significant brain responses to musical feature changes in prelingually deaf adolescent CI users and their associations with behavioral measures, implying neural predispositions for at least some aspects of music processing. Future studies should test any beneficial effects of a longer lasting music intervention in adolescent CI users.
- Published
- 2015