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Cochlear implant (CI) users exhibit reduced phonetic perception due to spectral loss in CI encoding, yet the underlying neural mechanisms remain unclear. This study combined electroencephalography and functional near\u2010infrared spectroscopy (fNIRS) to investigate the neural processing mechanisms of CI\u2010simulated channelized speech in 26 normal\u2010hearing adults during the processing of tones (T1\u2013T4) and consonants (\u201cba,\u201d \u201cda,\u201d \u201cga,\u201d \u201cza\u201d). Results showed that the N1 amplitude in auditory evoked potentials was significantly lower for channelized speech than a natural human voice (NH), particularly for T2 and T4 tones, indicating a weaker perception of channelized speech. Functional connectivity analysis revealed that an NH exhibited significantly higher synchrony in the \u03b4 and \u03b8 frequency bands than channelized speech, which was more pronounced in the right temporal lobe. This finding was also observed with \u201cza\u201d consonants. fNIRS results showed stronger right temporal lobe activation for channelized speech, suggesting that the brain requires greater auditory effort to process channelized speech. Combining both modalities revealed neural compensatory mechanisms underlying channelized speech\u2014manifesting as \u201clow\u2010efficiency perception with high cognitive load.\u201d This study provides potential biomarkers for CI rehabilitation assessment and a foundation for future research.<\/jats:p>","DOI":"10.1111\/nyas.15380","type":"journal-article","created":{"date-parts":[[2025,5,31]],"date-time":"2025-05-31T00:35:05Z","timestamp":1748651705000},"page":"260-273","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["A dual\u2010modality study on the neural features of cochlear implant simulated tone and consonant perception"],"prefix":"10.1111","volume":"1549","author":[{"given":"Leqiang","family":"Cao","sequence":"first","affiliation":[{"name":"Academy of Medical Engineering and Translational Medicine Tianjin University  Tianjin China"},{"name":"State Key Laboratory of Advanced Medical Materials and Devices Tianjin University  Tianjin China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qi","family":"Zheng","sequence":"additional","affiliation":[{"name":"Academy of Medical Engineering and Translational Medicine Tianjin University  Tianjin China"},{"name":"State Key Laboratory of Advanced Medical Materials and Devices Tianjin University  Tianjin China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yubo","family":"Wu","sequence":"additional","affiliation":[{"name":"Academy of Medical Engineering and Translational Medicine Tianjin University  Tianjin China"},{"name":"State Key Laboratory of Advanced Medical Materials and Devices Tianjin University  Tianjin China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hongxing","family":"Liu","sequence":"additional","affiliation":[{"name":"Academy of Medical Engineering and Translational Medicine Tianjin University  Tianjin China"},{"name":"State Key Laboratory of Advanced Medical Materials and Devices Tianjin University  Tianjin China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mingkun","family":"Guo","sequence":"additional","affiliation":[{"name":"Academy of Medical Engineering and Translational Medicine Tianjin University  Tianjin China"},{"name":"State Key Laboratory of Advanced Medical Materials and Devices Tianjin University  Tianjin China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yanru","family":"Bai","sequence":"additional","affiliation":[{"name":"Academy of Medical Engineering and Translational Medicine Tianjin University  Tianjin China"},{"name":"State Key Laboratory of Advanced Medical Materials and Devices Tianjin University  Tianjin China"},{"name":"Haihe Laboratory of Brain\u2010computer Interaction and Human\u2010machine Integration  Tianjin China"},{"name":"Tianjin Key Laboratory of Brain Science and Neuroengineering  Tianjin China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9240-3020","authenticated-orcid":false,"given":"Guangjian","family":"Ni","sequence":"additional","affiliation":[{"name":"Academy of Medical Engineering and Translational Medicine Tianjin University  Tianjin China"},{"name":"State Key Laboratory of Advanced Medical Materials and Devices Tianjin University  Tianjin China"},{"name":"Haihe Laboratory of Brain\u2010computer Interaction and Human\u2010machine Integration  Tianjin China"},{"name":"Tianjin Key Laboratory of Brain Science and Neuroengineering  Tianjin China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,5,30]]},"reference":[{"key":"e_1_2_10_2_1","unstructured":"World Health Organization. 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