Cochlear implants (CIs) allow to restore the hearing function in profoundly deaf individuals. Due to the degradation of the stimulus by CI signal processing, implanted individuals with single-sided deafness (SSD) have the specific challenge that the input highly differs between their ears. The present study compared normal-hearing (NH) listeners (N = 10) and left- and right-ear implanted SSD CI users (N = 10 left, N = 9 right), to evaluate cortical speech processing between CI- and NH-ears and to explore for side-of-implantation effects. The participants performed a two-deviant oddball task, separately with the left and the right ear. Auditory event-related potentials (ERPs) in response to syllables were compared between proficient and non-proficient CI users, as well as between CI and NH ears. The effect of the side of implantation was analysed on the sensor and the source level. CI proficiency could be distinguished based on the ERP amplitudes of the N1 and the P3b. Moreover, syllable processing via the CI ear, when compared to the NH ear, resulted in attenuated and delayed ERPs. In addition, the left-ear implanted SSD CI users revealed an enhanced functional asymmetry in the auditory cortex than right-ear implanted SSD CI users, regardless of whether the syllables were perceived via the CI or the NH ear. Our findings reveal that speech-discrimination proficiency in SSD CI users can be assessed by N1 and P3b ERPs. The results contribute to a better understanding of the rehabilitation success in SSD CI users by showing that cortical speech processing in SSD CI users is affected by CI-related stimulus degradation and experience-related functional changes in the auditory cortex.
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http://dx.doi.org/10.1007/s10548-022-00902-3 | DOI Listing |
J Otolaryngol Head Neck Surg
December 2024
Division of Otolaryngology, Department of Surgery, The University of British Columbia, Vancouver, BC, Canada.
Background: There is a dearth of information on the effects of bone conductive devices on temporal processing in individuals with single-sided deafness (SSD). This study investigates the effect of an adhesive bone conductive device on temporal processing in adults with SSD.
Methods: A prospective cohort study of temporal processing in adults with SSD was undertaken.
J Int Adv Otol
November 2024
Department of ENT, H&N Surgery, General Hospital Sint-Jan, Bruges, Belgium
Background: This study aimed to evaluate patient satisfaction and usage patterns of bone conduction devices (BCDs) for hearing rehabilitation, focusing on both users and non-users. Specific objectives included assessing reasons for non-use, exploring patient perceptions of BCD efficacy, and examining complications associated with BCD implantation.
Methods: A monocentric investigation was conducted at the Department of Ear, Nose, and Throat Diseases, Head and Neck Surgery at General Hospital Sint-Jan, Bruges.
Ther Adv Psychopharmacol
December 2024
Department of Community Mental Health, Mental Health Service Noord-Holland Noord, Alkmaar, The Netherlands.
Hear Res
December 2024
Dept. of Otorhinolaryngology/Head and Neck Surgery, University Medical Center Groningen, University of Groningen, The Netherlands; Research School of Behavioral and Cognitive Neuroscience, Graduate School of Medical Sciences, University of Groningen, The Netherlands; W.J. Kolff Institute for Biomedical Engineering and Materials Science, Graduate School of Medical Sciences, University of Groningen, The Netherlands. Electronic address:
Voice cues, such as fundamental frequency (F0) and vocal tract length (VTL), help listeners identify the speaker's gender, perceive the linguistic and emotional prosody, and segregate competing talkers. Postlingually implanted adult cochlear implant (CI) users seem to have difficulty in perceiving and making use of voice cues, especially of VTL. Early implanted child CI users, in contrast, perceive and make use of both voice cues better than CI adults, and in patterns similar to their peers with normal hearing (NH).
View Article and Find Full Text PDFCan J Psychiatry
November 2024
Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON, Canada.
Objective: Electroconvulsive therapy (ECT) is an evidence-based treatment for schizophrenia when anti-psychotic medications do not sufficiently control symptoms of psychosis or rapid response is required. Little is known about how it is used in routine clinical practice. The aim of this study was to identify the association of demographic and clinical characteristics with administration of ECT for schizophrenia spectrum disorders (SSD).
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