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Bimodal processing with AEP recordings, part I: evidence from the cognitive P300 auditory event-related potential

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Abstract
Introduction: Continuous advances in cochlear implant (CI) technology have led to a relaxation of the implantation criteria. Hence, an increasing amount of CI-users combine electrical and acoustical hearing in opposite ears. To date, it is unclear how the central auditory system processes binaurally presented electrical and acoustical signals. This study explores the utility of cognitive P300 auditory event-related potential to assess bimodal benefit. Methods: Five bimodal were included in the study. All participants had ipsilateral residual hearing, which was amplified by a conventional hearing aid. None of the participants had ipsilateral residual hearing. The cognitive P300 response was elicited using an oddball paradigm with a 500 Hz tone-burst as the standard and a 250 Hz tone-burst as the deviant stimulus. P300s were recorded in response to CI-only and bimodal stimulation. Results: In four out of five subjects, bimodal stimulation elicited better P300 than CI-only stimulation. In these subjects, latencies were shorter and amplitudes were larger in the bimodal condition. The results on P300 measures were in agreement with the subjects’ behavioral discrimination abilities. Conclusion: These preliminary data reveal that the bimodal condition elicited better P300 responses than the CI-only condition. Bimodal listeners may have used various cues to perform the discrimination task.

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Chicago
Van Yper, Lindsey, Ingeborg Dhooge, KATRIEN VERMEIRE, EDDY DE VEL, and Andy Beynon. 2016. “Bimodal Processing with AEP Recordings, Part I: Evidence from the Cognitive P300 Auditory Event-related Potential.” In Objective Measures in Auditory Implants, 9th International Symposium, Abstracts.
APA
Van Yper, L., Dhooge, I., VERMEIRE, K., DE VEL, E., & Beynon, A. (2016). Bimodal processing with AEP recordings, part I: evidence from the cognitive P300 auditory event-related potential. Objective Measures in Auditory Implants, 9th International symposium, Abstracts. Presented at the 9th International symposium on Objective Measures in Auditory Implants.
Vancouver
1.
Van Yper L, Dhooge I, VERMEIRE K, DE VEL E, Beynon A. Bimodal processing with AEP recordings, part I: evidence from the cognitive P300 auditory event-related potential. Objective Measures in Auditory Implants, 9th International symposium, Abstracts. 2016.
MLA
Van Yper, Lindsey, Ingeborg Dhooge, KATRIEN VERMEIRE, et al. “Bimodal Processing with AEP Recordings, Part I: Evidence from the Cognitive P300 Auditory Event-related Potential.” Objective Measures in Auditory Implants, 9th International Symposium, Abstracts. 2016. Print.
@inproceedings{7262242,
  abstract     = {Introduction: Continuous advances in cochlear implant (CI) technology have led to a relaxation of the implantation criteria. Hence, an increasing amount of CI-users combine electrical and acoustical hearing in opposite ears. To date, it is unclear how the central auditory system processes binaurally presented electrical and acoustical signals. This study explores the utility of cognitive P300 auditory event-related potential to assess bimodal benefit. 
Methods: Five bimodal were included in the study. All participants had ipsilateral residual hearing, which was amplified by a conventional hearing aid. None of the participants had ipsilateral residual hearing. The cognitive P300 response was elicited using an oddball paradigm with a 500 Hz tone-burst as the standard and a 250 Hz tone-burst as the deviant stimulus. P300s were recorded in response to CI-only and bimodal stimulation.
Results: In four out of five subjects, bimodal stimulation elicited better P300 than CI-only stimulation. In these subjects, latencies were shorter and amplitudes were larger in the bimodal condition. The results on P300 measures were in agreement with the subjects{\textquoteright} behavioral discrimination abilities.
Conclusion: These preliminary data reveal that the bimodal condition elicited better P300 responses than the CI-only condition. Bimodal listeners may have used various cues to perform the discrimination task.},
  author       = {Van Yper, Lindsey and Dhooge, Ingeborg and VERMEIRE, KATRIEN and DE VEL, EDDY and Beynon, Andy},
  booktitle    = {Objective Measures in Auditory Implants, 9th International symposium, Abstracts},
  language     = {eng},
  location     = {Szeged, Hungary},
  title        = {Bimodal processing with AEP recordings, part I: evidence from the cognitive P300 auditory event-related potential},
  year         = {2016},
}