Effects of Stimulus Duration on Event-Related Potentials Recorded From Cochlear-Implant Users
| dc.contributor.author | Presacco, Alessandro | |
| dc.contributor.author | Innes-Brown, Hamish | |
| dc.contributor.author | Goupell, Matthew | |
| dc.contributor.author | Anderson, Samira | |
| dc.date.accessioned | 2018-05-01T01:04:20Z | |
| dc.date.available | 2018-05-01T01:04:20Z | |
| dc.date.issued | 2017-05 | |
| dc.description.abstract | OBJECTIVES: Several studies have investigated the feasibility of using electrophysiology as an objective tool to efficiently map cochlear implants. A pervasive problem when measuring event-related potentials is the need to remove the direct-current (DC) artifact produced by the cochlear implant. Here, we describe how DC artifact removal can corrupt the response waveform and how the appropriate choice of stimulus duration may minimize this corruption. DESIGN: Event-related potentials were recorded to a synthesized vowel /a/ with a 170- or 400-ms duration. RESULTS: The P2 response, which occurs between 150 and 250 ms, was corrupted by the DC artifact removal algorithm for a 170-ms stimulus duration but was relatively uncorrupted for a 400-ms stimulus duration. CONCLUSIONS: To avoid response waveform corruption from DC artifact removal, one should choose a stimulus duration such that the offset of the stimulus does not temporally coincide with the specific peak of interest. While our data have been analyzed with only one specific algorithm, we argue that the length of the stimulus may be a critical factor for any DC artifact removal algorithm. | en_US |
| dc.description.sponsorship | This work was supported by NIH Grant R01-AG051603 (M.J.G.), T32-DC000046 (Center of Comparative Evolutionary Biology of Hearing training grant award to A.P.), the International Graduate research fellowship awarded by the University of Maryland (A.P.), a seed grant from the College of Behavioral and Social Sciences at University of Maryland-College Park (Dean’s Research Initiative, M.J.G.), and a seed grant from the Brain and Behavior Initiative (BBI) at the University of Maryland-College Park (M.J.G. and S.A.). HIB was supported by an Australian National Health and Medical Research Council Peter Doherty Fellowship. The Bionics Institute acknowledges the support it receives from the Victorian Government through its Operational Infrastructure Support Program. | en_US |
| dc.identifier.citation | Presacco, A., H. Innes-Brown, M. J. Goupell, and S. Anderson. 2017. Effects of Stimulus Duration on Event-Related Potentials Recorded From Cochlear-Implant Users. Ear and Hearing. 38(6): e389-e393. | en_US |
| dc.identifier.issn | 0196-0202 | |
| dc.identifier.uri | http://repository.bionicsinstitute.org:8080/handle/123456789/295 | |
| dc.language.iso | en | en_US |
| dc.publisher | Wolters Kluwer Health | en_US |
| dc.subject | Cochlear implant | en_US |
| dc.subject | EEG | en_US |
| dc.subject | Artifact removal | en_US |
| dc.title | Effects of Stimulus Duration on Event-Related Potentials Recorded From Cochlear-Implant Users | en_US |
| dc.type | Article | en_US |