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Li Xu

Li Xu
Associate Professor, Communication Sciences and Disorders
Grover W229
Biomedical Engineering

Research Interests:Electrical Hearing, Auditory Prostheses

All Degrees Earned:Ph.D., Neuroscience, Florida, 1999. Master's of Medicine, Otolaryngology, Capital University of Medical Sciences, Beijing, 1988. Bachelor's of Medicine, Hengyang Medical College, 1985.

Journal Article, Academic Journal (32)

  • Sun, T., Gong, S., Wang, Z., Smith, C., Wang, X., Xu, L., Liu, J. (2021). Boosting the Intelligibility of Time-domain Speech Enhancement Networks through Speech Representations. IEEE Access.
  • Feng, Q., Stork, C., Xu, S., Yuan, D., Xia, X., LaPenna, K., Guo, G., Sun, H., Xu, L., Siedlecki, C., Brundage, K., Sheaffer, N., Schell, T., He, P. (2019). Increased circulating microparticles in streptozotocin-induced diabetes propagate inflammation contributing to microvascular dysfunction.. 3 . The Journal of physiology; 597: 781-798.
  • Mou, Z., Chen, Z., Yang, J., Xu, L. (2018). Acoustic properties of vowel production in Mandarin-speaking patients with post-stroke dysarthria. 1 . Scientific Reports; 8: http://www.nature.com/articles/s41598-018-32429-8 .
  • Ren, C., Yang, J., Zha, D., Lin, Y., Liu, H., Kong, Y., Liu, S., Xu, L. (2018). Spoken word recognition in noise in Mandarin-speaking pediatric cochlear implant users. International Journal of Pediatric Otorhinolaryngology; 113: 124--130. https://linkinghub.elsevier.com/retrieve/pii/S0165587618303549 .
  • Yang, J., Qian, J., Chen, X., Kuehnel, V., Rehmann, J., von Buol, A., Li, Y., Ren, C., Liu, B., Xu, L. (2018). Effects of nonlinear frequency compression on the acoustic properties and recognition of speech sounds in Mandarin Chinese. 3 . The Journal of the Acoustical Society of America; 143: 1578--1590. http://asa.scitation.org/doi/10.1121/1.5027404 .
  • Hou, L., Xu, L. (2018). Role of short-time acoustic temporal fine structure cues in sentence recognition for normal-hearing listeners. 2 . The Journal of the Acoustical Society of America; 143: EL127-EL132. http://dx.doi.org/10.1121/1.5024817 .
  • Chen, X., You, Y., Yang, J., Xu, L. (2017). Effects of nonlinear frequency compression on Mandarin speech recognition and sound quality perception in hearing-aid users. 4 . The Journal of the Acoustical Society of America; 142: 2610--2610. https://asa.scitation.org/doi/10.1121/1.5014554 .
  • Mao, Y., Xu, L. (2017). Lexical tone recognition in noise in normal-hearing children and prelingually deafened children with cochlear implants. International Journal of Audiology; 56: S23--S30. https://doi.org/10.1080/14992027.2016.1219073 .
  • Mao, Y., Yang, J., Hahn, E., Xu, L. (2017). Auditory perceptual efficacy of nonlinear frequency compression used in hearing aids: A review. 3 . Journal of Otology; 12: 97--111. http://www.sciencedirect.com/science/article/pii/S1672293017300193 .
  • Mao, Y., Chen, Z., Xu, L. (2017). The application of neural network analysis on the assessment of lexical tone rehabilitation of pediatric cochlear implant users. 8 . Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi; 52: 573--579. http://europepmc.org/abstract/med/28822408 .
  • Yang, J., Xu, L. (2017). Mandarin compound vowels produced by prelingually deafened children with cochlear implants. International Journal of Pediatric Otorhinolaryngology; 97: 143--149. https://www.ijporlonline.com/article/S0165-5876(17)30153-2/fulltext .
  • Qi, B., Mao, Y., Liu, J., Liu, B., Xu, L. (2017). Relative contributions of acoustic temporal fine structure and envelope cues for lexical tone perception in noise. 5 . The Journal of the Acoustical Society of America; 141: 3022--3029. https://asa.scitation.org/doi/10.1121/1.4982247 .
  • Yang, J., Vadlamudi, J., Yin, Z., Lee, C., Xu, L. (2017). Production of word-initial fricatives of Mandarin Chinese in prelingually deafened children with cochlear implants. 2 . International Journal of Speech-Language Pathology; 19: 153--164. https://doi.org/10.3109/17549507.2016.1143972 .
  • Yang, J., Brown, E., Fox, R., Xu, L. (2015). Acoustic properties of vowel production in prelingually deafened Mandarin-speaking children with cochlear implants. 5 . The Journal of the Acoustical Society of America; 138: 2791--2799. http://asa.scitation.org/doi/10.1121/1.4932165 .
  • Li, B., Hou, L., Xu, L., Wang, H., Yang, G., Yin, S., Feng, Y. (2015). Effects of steep high-frequency hearing loss on speech recognition using temporal fine structure in low-frequency region. Hearing Research; 326: 66--74. https://linkinghub.elsevier.com/retrieve/pii/S0378595515000866 .
  • Kim, B., Chang, S., Yang, J., Oh, S., Xu, L. (2015). Relative Contributions of Spectral and Temporal Cues to Korean Phoneme Recognition. 7 . PLoS ONE; 10: e0131807. https://dx.plos.org/10.1371/journal.pone.0131807 .
  • Wang, S., Dong, R., Liu, D., Wang, Y., Liu, B., Zhang, L., Xu, L. (2015). The Role of Temporal Envelope and Fine Structure in Mandarin Lexical Tone Perception in Auditory Neuropathy Spectrum Disorder. 6 . PLOS ONE; 10: e0129710. http://dx.plos.org/10.1371/journal.pone.0129710 .
  • Zhou, N., Xu, L. (2014). Melody recognition in dichotic listening with or without frequency mismatch. 3 . Ear and Hearing; 35: 379--382.
  • Mao, Y., Xu, L. (2013). [Music and cochlear implants] [Review].. 1 . Journal of Otology; 8: 32--38. http://www.ohio.edu/people/xul/mao2013jotol.pdf .
  • Xu, L., Zhou, . (2013). [Tone language understanding with cochlear implants] [Review].. 4 . Otolaryngology [News and Reviews]; 28: 196--199.
  • Mao, Y., Zhang, M., Nutter, H., Zhang, Y., Zhou, Q., Liu, Q., Xu, L. (2013). Acoustic properties of vocal singing in prelingually-deafened children with cochlear implants or hearing aids. International Journal of Pediatric Otorhinolaryngology; 77: 1833--1840.
  • Liu, Q., Zhou, N., Berger, B., Huang, D., Xu, L. (2013). Mandarin consonant contrast recognition among children with cochlear implants or hearing aids, and normal-hearing children. Otology & Neurotology; 34: 471--476.
  • Zhou, N., Huang, J., Chen, X., Xu, L. (2013). Relationship between tone perception and production in prelingually-deafened children with cochlear implants. Otology & Neurotology; 34: 499--506.
  • Zhou, N., Xu, L., Pfingst, B. (2012). Characteristics of detection thresholds and maximum comfortable loudness levels as a function of pulse rate in human cochlear implant users. 1-2 . Hearing Research; 284: 25--32. http://linkinghub.elsevier.com/retrieve/pii/S0378595511003017 .
  • Feng, Y., Xu, L., Zhou, N., Yang, G., Yin, S. (2012). Sine-wave speech recognition in a tonal language. 2 . The Journal of the Acoustical Society of America; 131: EL133--EL138. http://asa.scitation.org/doi/10.1121/1.3670594 .
  • Wang, S., Xu, L., Mannell, R. (2011). Relative Contributions of Temporal Envelope and Fine Structure Cues to Lexical Tone Recognition in Hearing-Impaired Listeners. 6 . Journal of the Association for Research in Otolaryngology; 12: 783--794. http://link.springer.com/10.1007/s10162-011-0285-0 .
  • Wang, W., Zhou, N., Xu, L. (2011). Musical pitch and lexical tone perception with cochlear implants. 4 . International Journal of Audiology; 50: 270--278. http://www.tandfonline.com/doi/full/10.3109/14992027.2010.542490 .
  • Xu, L., Chen, X., Lu, H., Zhou, N., Wang, S., Liu, Q., Li, Y., Zhao, X., Han, D. (2011). Tone perception and production in pediatric cochlear implants users. 4 . Acta Oto-Laryngologica; 131: 395--398. http://www.tandfonline.com/doi/full/10.3109/00016489.2010.536993 .
  • Zhou, N., Xu, L., Lee, C. (2010). The effects of basal spectral shift on consonant confusion. Journal of the Acoustical Society of America; 128: 401--409.
  • Zhou, N., Xu, L., Lee, C. (2010). The effects of frequency-place shift on consonant confusion in cochlear implant simulations. 1 . The Journal of the Acoustical Society of America; 128: 401--409. http://asa.scitation.org/doi/10.1121/1.3436558 .
  • Xu, L., Zhou, N., Chen, X., Li, Y., Schultz, H., Zhao, X., Han, D. (2009). Vocal singing by prelingually-deafened children with cochlear implants. 1-2 . Hearing Research; 255: 129--134. http://linkinghub.elsevier.com/retrieve/pii/S0378595509001543 .
  • Han, D., Liu, B., Zhou, N., Chen, X., Kong, Y., Liu, H., Zheng, Y., Xu, L. (2009). Lexical Tone Perception with HiResolution and HiResolution 120 Sound-Processing Strategies in Pediatric Mandarin-Speaking Cochlear Implant Users:. 2 . Ear and Hearing; 30: 169--177. https://insights.ovid.com/crossref?an=00003446-200904000-00003 .

Journal Article, Professional Journal (37)

  • Chen, X., Li, Y., Zhao, X., Han, D., Xu, L. (2007). A preliminary study on tone production in children with cochlear implants. Chinese Journal of Otology; 5: 171-175.
  • Pfingst, B., Burkholder-Juhasz, R., Xu, L., Thompson, C. (2007). Across-site patterns of modulation detection in listeners with cochlear implants.
  • Pfingst, B., Xu, L., Thompson, C. (2007). Effects of carrier pulse rate on modulation detection in subjects with cochlear implants. Journal of the Acoustical Society of America; 121: 2236-2246.
  • Zhou, N., Zhang, W., Lee, C., Xu, L. (2007). Lexical tone recognition with an artificial neural network. Ear and Hearing.
  • Pfingst, B., Burkholder-Juhasz, R., Zwolan, T., Xu, L. (2007). Psychophysical assessment of strong and weak stimulation sites in auditory prosthesis electrode arrays.
  • Xu, L., Zheng, Y. (2007). Spectral and temporal cues for phoneme recognition in noise. Journal of the Acoustical Society of America; 122: 1758-1764.
  • Xu, L., Zhang, W., Zhou, N., Lee, C., Li, Y., Chen, X., Zhao, X. (2006). Mandarin Chinese tone recognition with an artificial neural network. Journal of Otology; 1: 30-34.
  • Xu, L. (2006). Temporal and spectral cues for speech perception. Chinese Journal of Otology; 4: 335-342.
  • Xu, L., Zwolan, T., Thompson, C., Pfingst, B. (2005). Efficacy of a cochlear-implant simultaneous analog stimulation strategy coupled with a monopolar electrode configuration. Annals of Otology, Rhinology & Laryngology; 114: 886-893.
  • Pfingst, B., Xu, L. (2005). Psychophysical metrics and speech recognition in cochlear implant users. Audiology & Neuro-Otology; 10: 331-341.
  • Xu, L., Thompson, C., Pfingst, B. (2005). Relative contributions of spectral and temporal cues for phoneme recognition. Journal of the Acoustical Society of America; 117: 3255-3267.
  • Pfingst, B., Xu, L., Thompson, C. (2004). Across-site threshold variation in cochlear implants: relation to speech recognition. Audiology & Neuro-Otology; 9: 341-352.
  • Pfingst, B., Xu, L. (2004). Across-site variation in detection thresholds and maximum comfortable loudness levels for cochlear implants. 1 . Journal of the Association for Research in Otolaryngology; 5: 11-24.
  • Xu, L., Li, Y., Hao, J., Chen, X., Xue, S., Han, D. (2004). Tone production in Mandarin-speaking children with cochlear implants: A preliminary study. Acta Oto-laryngologica; 124: 363-367.
  • Franck, K., Xu, L., Pfingst, B. (2003). Effects of stimulus level on speech perception with cochlear prostheses. 1 . Journal of the Association for Research in Otolaryngology; 4: 49-59.
  • Xu, L., Pfingst, B. (2003). Relative importance of the temporal envelope and fine structure in tone perception. 6 . Journal of the Acoustical Society of America; 114: 3024-3027.
  • Xu, L., Tsai, Y., Pfingst, B. (2002). Features of stimulation affecting tonal-speech perception: Implications for cochlear prostheses. 1 . Journal of the Acoustical Society of America; 112: 247-258.
  • Pfingst, B., Franck, K., Xu, L., Bauer, E., Zwolan, T. (2001). Effects of electrode configuration and place of stimulation on speech perception with cochlear prostheses. 2 . Journal of the Association for Research in Otolaryngology; 2: 87-103.
  • Furukawa, S., Xu, L., Middlebrooks, J. (2000). Coding of sound-source locations by ensembles of cortical neurons. 3 . Journal of Neuroscience; 20: 1216-1228.
  • Xu, L., Furukawa, S., Middlebrooks, J. (2000). Cortical mechanisms for auditory spatial illusion. Acta Oto-laryngologica; 120: 263-266.
  • Xu, L., Middlebrooks, J. (2000). Individual differences in external-ear transfer functions of cats. 3 . Journal of the Acoustical Society of America; 106: 1451-1459.
  • Xu, L., Furukawa, S., Middlebrooks, J. (1999). Auditory cortical responses in the cat to sounds that produce spatial illusions. Nature; 399: 688-691.
  • Middlebrooks, J., Xu, L., Clock, A., Green, D. (1998). Codes for sound-source location in non-tonotopic auditory cortex. Journal of Neurophysiology; 80: 863-881.
  • Xu, L., Furukawa, S., Middlebrooks, J. (1998). Sensitivity of sound-source elevation in non-tonotopic auditory cortex.. Journal of Neurophysiology; 80: 882-894.
  • Middlebrooks, J., Clock, A., Xu, L., Green, D. (1994). A panoramic code for sound location by cortical neurons. Science; 264: 842-844.
  • Xu, L., Probst, R., Harris, F., Roede, J. (1994). Peripheral analysis of frequency in human ears revealed by tone burst evoked otoacoustic emission. Hearing Research; 74: 173-180.
  • Xu, L., Pfaltz, C., Arnold, W. (1993). HLA antigens in patients with inner ear diseases of unknown etiology. 3 . ORL; 55: 125-134.
  • Roede, J., Harris, F., Probst, R., Xu, L. (1993). Repeatability of distortion product otoacoustic emissions in normally hearing humans. 5 . Audiology; 32: 273-281.
  • Chen, X., Liu, C., Xu, L. (1993). Synchronous recording of objective pulsatile tinnitus and electrocardiogram. 1 . Journal of Audiology and Speech Pathology; 1: 32-34.
  • Chen, X., Liu, C., Guo, L., Xu, L. (1992). A preliminary study on clinical application of cochlear microphonics. 4 . Clinical Journal of Otorhinolaryngology; 6: 201-204.
  • Liu, C., Chen, X., Xu, L. (1992). Cochlear microphonics and recruitment. 2 . Acta Oto-laryngologica; 112: 215-220.
  • Harris, F., Probst, R., Xu, L. (1992). Suppression of the 2f1-f2 otoacoustic emission in humans. 1 . Hearing Research; 64: 133-141.
  • Xu, L., Liu, C. (1991). Clinical application of evoked otoacoustic emissions: A preliminary report. 1 . Clinical Journal of Otorhinolaryngology; 5: 1-3.
  • Xu, L., Lü, J., Wang, F., Liu, C. (1991). Otoacoustic emission cochleogram evoked by bone conducted stimulation. 3 . Acta Physiologica Sinica; 43: 306-310.
  • Xu, L., Zhu, X., Zhao, Y. (1990). Immunoglobulin E and circulating immune complexes in endolymphatic hydrops. 7 . Annals of Otology, Rhinology & Laryngology; 99: 535-538.
  • Xu, L., Zhao, Y., Zhu, X. (1989). An allergological study of Meniere's disease. 3 . Clinical Journal of Otorhinolaryngology; 3: 153-156.
  • Xu, L., Liu, C., Liu, Y. (1989). Measurement of evoked otoacoustic emissions in normal-hearing adults. 6 . Chinese Journal of Otorhinolaryngology; 24: 252-254.

Book, Chapter in Scholarly Book (5)

  • Xu, L., Mao, Y. (2015). Physiology of the auditory nervous system . 2 . Changsha: Hunan Science & Technology Press.
  • Xu, L. (2003). Cochlear implant technology . Beijing: People’s Medical Publishing House; 8-38.
  • Xu, L. (2003). Introduction to psychoacoustics . Changsha: Hunan Science & Technology Press; 117-140.
  • Xu, L. (2003). Sound and its measurements . Changsha: Hunan Science & Technology Press; 15-29.
  • Middlebrooks, J., Xu, L., Furukawa, S., Mickey, B. (2002). Location signaling by auditory cortical neurons . New York: Springer-Verlag; 319-357.

Book, Chapter in Textbook (2)

  • Xu, L. (2006). Auditory physiology . Beijing: People’s Medical Publishing House; 43-58.
  • Xu, L., Li, Y. (2004). Cochlear implant hardware and mechanisms . Beijing: Scientific and Technical Documents Publishing House; 544-552.

Conference Proceeding (8)

  • Sun, T., Gong, S., Wang, Z., Smith, C., Wang, X., Xu, L., Liu, J., Abuhajar, N. (2022). Individualized Conditioning and Negative Distances for Speaker Separation. IEEE International Conference on Machine Learning and Applications (ICMLA'22).
  • Sun, T., Gong, S., Wang, Z., Smith, C., Wang, X., Xu, L., Liu, J. (2021). Boosting the Intelligibility of Waveform Speech Enhancement Networks through Self-supervised Representations. IEEE International Conference on Machine Learning and Applications (ICMLA'21).
  • Abuhajar, N., Sun, T., Wang, Z., Gong, S., Smith, C., Wang, X., Xu, L., Liu, J. (2021). Network Compression and Frame Stitching for Efficient and Robust Speech Enhancement. 2021 IEEE National Aerospace & Electronics Conference.
  • Mayle, A., Mou, Z., Bunescu, R., Mirshekarian, S., Xu, L., Liu, C. (2019). Diagnosing Dysarthria with Long Short-Term Memory Networks. Proc. Interspeech 2019; 4514--4518.
  • Gong, S., Wang, Z., Sun, T., Smith, C., Xu, L., Liu, J. (2019). Dilated FCN: Listening Longer to Hear Better. IEEE Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA'19) ; http://www.waspaa.com/ .
  • Chen, C., Bunescu, R., Xu, L., Liu, C. (2016). Tone Classification in Mandarin Chinese using Convolutional Neural Networks. San Francisco, CA: International Speech Communication Association (ISCA) Conference (Interspeech); http://www.isca-speech.org/archive/Interspeech_2016/pdfs/0528.PDF .
  • Middlebrooks, J., Xu, L., Eddins, A., Green, D. (1995). Decoding spike patterns in the auditory cortex. Stuttgart: Georg Thieme Verlag; 108.
  • Harris, F., Probst, R., Plinkert, P., Xu, L. (1993). Influence of interference tones on 2f1-f2 acoustic distortion products. Singapore: World Scientific. ; 87-93.

Abstract (1)

  • Xu, L., Liu, C. (2023). Spatial Masking Release under Congruent and Incongruent Visual and Auditory Spatial Locations. ARO MidWinter Meeting.

Conference, Poster (1)

  • Chen, L., Bunescu, R., Xu, L., Liu, C. (2016). Mandarin tone recognition based on unsupervised feature learning from spectrograms . The 5th Joint Meeting of the Acoustical Society of America and the Acoustical Society of Japan.

Other (63)

  • Xu, L. (2007). An acoustical, neural-network and perceptual study of tone production in children with cochlear implants. Zhangjiajie: The 4th International Symposium on Hearing Science Research and Clinics.
  • Zhou, N., Xu, L. (2007). An acoustical, neural-network and perceptual study of tone production in Mandarin-Chinese-speaking children. Abstr ARO Midwinter Meeting; 30: 71.
  • Xu, L., Liu, B., Chen, X., Kong, Y., Liu, H., Zhou, N., Han, D. (2007). Lexical tone perception with HiResolution® 120 speech-processing strategy in Mandarin-speaking children. Sydney: The 6th Asia Pacific Symposium on Cochlear Implants and Related Sciences.
  • Zhou, N., Xu, L. (2007). Mandarin Chinese tone production in children with cochlear implants. Scottsdale, AZ: American Auditory Society Annual Meeting.
  • Wei, W., Xu, L. (2007). Melody perception using a novel harmonic spacing filtering scheme in cochlear implant sound processing. Abstr ARO Midwinter Meeting; 30: 305-306.
  • Chen, X., Zhou, N., Li, Y., Zhao, X., Han, D., Xu, L. (2007). Recognition of lexical tone production by children with an artificial neural network. Abstr ARO Midwinter Meeting; 30: 70.
  • Zhou, N., Xu, L. (2007). The effects of spectral distribution of envelopes on lexical tone perception. Tahoe City, CA: Conference on Implantable Auditory Prostheses.
  • Xu, L. (2007). Tone production in Mandarin Chinese speaking children with cochlear implants. Tahoe City, CA: Conference on Implantable Auditory Prostheses.
  • Pfingst, B., Burkholder, R., Thompson, C., Xu, L. (2006). Modulation detection thresholds for cochlear implants: Dependence on stimulation site and stimulus level. 5 . Journal of the Acoustical Society of America; 120: 3342.
  • Xu, L., Chen, X., Zhou, N., Li, Y., Zheng, Y., Zhao, X., Han, D. (2006). Recognition of lexical tone production of children with an artificial neural network. Moscow: Collegium ORLAS Congress.
  • Xu, L., Zheng, Y. (2006). Spectral and temporal cues for phoneme recognition in noise. Scottsdale, AZ: American Auditory Society Annual Meeting.
  • Xu, L., Pfingst, B. (2005). Effects of carrier pulse rate on modulation detection in subjects with cochlear implants.. Seoul: The 25th Politzer Society Meeting.
  • Xu, L., Zhang, W., Lee, C. (2005). Mandarin Chinese tone recognition with an artificial neural network. Hong Kong: The 5th Asia Pacific Symposium on Cochlear Implants and Related Sciences.
  • Zheng, Y., Xu, L. (2005). Spectral and temporal cues for phoneme recognition in noise: Implications for cochlear implants. Pacific Grove, CA. : Conference on Implantable Auditory Prostheses.
  • Xu, L., Pfingst, B. (2005). Temporal and spectral cues for tone perception. Pacific Grove, CA: Conference on Implantable Auditory Prostheses.
  • Xu, L., Pfingst, B. (2004). Correlation of speech recognition by cochlear implant users with metrics based on thresholds and loudness levels. 4 . Journal of the Acoustical Society of America; 116: 2601.
  • Xu, L., Pfingst, B. (2004). Relationship between across-site variation in T and C levels and speech recognition in cochlear implant users. Abstr ARO Midwinter Meeting; 27: 191.
  • Xu, L., Zwolan, T., Thompson, C., Pfingst, B. (2004). Speech perception using the Clarion SAS and CIS strategies with monopolar and bipolar electrode configurations. Indianapolis, IN: VIIIth International Cochlear Implant Conference.
  • Xue, S., Moransky, T., Xu, L. (2003). Aging changes of female speakers voices: Longitudinal study. 15 . The ASHA Leader; 8: 226.
  • Rout, A., Xu, L., Bond, B. (2003). Effect of delay on perception of hearing aid users own voice.. San Antonio, TX. : The American Academy of Audiology's 15th Annual Convention & Expo.
  • Xu, L. (2003). Features of stimulations important for lexical tonal perception. Taipei: The 4th Congress of Asia Pacific Symposium on Cochlear Implant and Related Sciences.
  • Drennan, W., Pfingst, B., Xu, L. (2003). Intensity discrimination using bipolar and monopolar electrode configurations in Nucleus Contour® cochlear implants. Pacific Grove, CA: Conference on Implantable Auditory Prostheses.
  • Drenner, W., Pfingst, B., Xu, L. (2003). Intensity discrimination using bipolar and monopolar electrode configurations in Nucleus Contour® cochlear implants. Abstr ARO Midwinter Meeting; 26: 60.
  • Pfingst, B., Miller, A., Nakaizumi, T., Colesa, D., Xu, L., Anderson, D., Raphael, Y. (2003). Modifications of the electrode-neuron interface: Functional assessment.. Pacific Grove, CA.: Conference on Implantable Auditory Prostheses.
  • Xu, L., Pfingst, B. (2003). Relative contribution of spectral and temporal cues for phoneme perception as revealed by acoustic simulations of cochlear implants. Abstr ARO Midwinter Meeting; 26: 198-199.
  • Franck, K., Xu, L., Pfingst, B. (2003). The influence of experience in determining processor settings. Washington DC. : International Conference on Cochlear Implants in Children.
  • Xu, L., Li, Y., Hao, G., Chen, X., Xue, S., Han, D. (2003). Tone production in Mandarin-speaking children with cochlear implants: A preliminary report. Helsinki: Collegium ORLAS Congress.
  • Xu, L., Li, Y., Hao, G., Chen, X., Xue, S., Han, D. (2003). Tone production in Mandarin-speaking children with cochlear implants: A preliminary report. Pacific Grove, CA: Conference on Implantable Auditory Prostheses.
  • Xu, L., Li, Y., Hao, G., Chen, X., Xue, S., Han, D. (2003). Tone production in Mandarin-speaking children with cochlear implants: A preliminary study. Taipei: The 4th Congress of Asia Pacific Symposium on Cochlear Implant and Related Sciences.
  • Xu, L. (2002). Acoustic simulations of cochlear implants. Beijing: National Major Cities Conference on Otolaryngology – Head & Neck Surgery.
  • Middlebrooks, J., Xu, L., Furukawa, S., Macpherson, E. (2002). Cortical neurons that localize sounds. 1 . The Neuroscientist; 8: 73-83.
  • Franck, K., Xu, L., Pfingst, B. (2002). Effects of stimulus level and dynamic range compression on speech perception with cochlear implants. Manchester: The VIIth International Cochlear Implant Conference.
  • Xu, L., Pfingst, B. (2002). The relative importance of temporal envelope and fine structure for tone perception. Noordwijk: Collegium ORLAS Congress ; 88.
  • Xu, L., Pfingst, B. (2002). Variation in thresholds and comfort levels across cochlear implant stimulation sites: Effects of electrode configuration and stimulus level. 122 . Abstr ARO Midwinter Meeting; 25.
  • Middlebrooks, J., Xu, L., Furukawa, S., Mickey, B., Macpherson, E. (2001). Cortical representation of real and illusory sound sources. New York: 2001 Symposium on Processing the Auditory Environment: From Synaptic Mechanisms to Population Codes,.
  • Xu, L. (2001). Effects of stimulus level and electrode configuration on phoneme perception with cochlear implants. Abstr ARO Midwinter Meeting; 24: 169.
  • Pfingst, B., Xu, L., Morris, D., Franck, K. (2001). Influence of electrical stimulus configuration on information transmission: Psychophysics and speech perception. Pacific Grove, CA. : Conference on Implantable Auditory Prostheses ; 44.
  • Xu, L., Pfingst, B. (2001). Relative importance of the envelope and fine structure for tone perception as revealed by auditory chimera. Pacific Grove, CA: Conference on Implantable Auditory Prostheses; 167.
  • Xu, L., Tsai, J., Pfingst, B. (2001). Spectral and temporal features of stimulation affecting tonal-speech perception. Abstr ARO Midwinter Meeting; 24: 169.
  • Pfingst, B., Franck, K., Xu, L. (2000). ). Effects of electrode configuration and longitudinal electrode placement and spacing on speech recognition in implanted human subjects. Abstr ARO Midwinter Meeting; 23: 214.
  • Xu, L., Middlebrooks, J. (2000). Individual differences in external-ear transfer functions of domestic cats. 23: 176.
  • Furukawa, S., Xu, L., Middlebrooks, J. (2000). Neural ensemble codes for sound source location in the auditory cortex. Abstr ARO Midwinter Meeting; 23: 82-83.
  • Xu, L., Tsai, J., Franck, K., Pfingst, B. (2000). Temporal and spectral features of tone languages: Implications for cochlear implants. Washington, DC. : Collegium ORLAS Congress; 55-56.
  • Xu, L., Furukawa, S., Middlebrooks, J. (1999). Cortical mechanisms for auditory spatial illusions. Lyon: Collegium ORLAS Congress.
  • Xu, L., Furukawa, S., Middlebrooks, J. (1999). Cortical parallels to sound-localization illusions. Abstr ARO Midwinter Meeting; 22: 38.
  • Furukawa, S., Xu, L., Middlebrooks, J. (1999). Spike-count difference between pairs of cortical neurons: Sensitivity to sound-source location and sound pressure level. Abstr ARO Midwinter Meeting; 22: 39.
  • Furukawa, S., Xu, L., Middlebrooks, J. (1998). Coding of sound-source location by relative spike timing between pairs of cortical neurons. Neurosci Abstr ; 24: 1402.
  • Xu, L. (1998). Responses of auditory cortical neurons to sounds that produce spatial illusions. Neurosci Abstr ; 24: 1402.
  • Middlebrooks, J., Onsan, Z., Xu, L. (1998). Virtual sound localization with non-individualized transfer functions is improved by scaling transfer functions in frequency. Abstr ARO Midwinter Meeting; 21: 43.
  • Middlebrooks, J., Xu, L. (1996). Information-bearing elements of spike trains in the cat's auditory cortex. Neurosci Abstr ; 22: 1068.
  • Xu, L., Middlebrooks, J. (1995). Coding of sound source elevation by firing patterns of auditory cortical neurons. Neurosci Abstr; 21: 667.
  • Middlebrooks, J., Eddins, A., Xu, L., Green, D. (1995). Cortical codes for sound location. 5 . Journal of the Acoustical Society of America; 97: 3398.
  • Probst, R., Xu, L., Harris, F. (1994). Cochlear processing short, transient stimuli: Linear and nonlinear superposition. . Estoril: Collegium ORLAS Congress.
  • Clock, A., Xu, L., Green, D., Middlebrooks, J. (1994). Neural network analysis of auditory representation: I. Temporal firing patterns of cortical neurons independent of stimulus duration. Abstr ARO Midwinter Meeting; 17: 24.
  • Xu, L., Clock, A., Green, D., Middlebrooks, J. (1994). Neural network analysis of auditory representation: II. Spatial interpolation and level invariance. Abstr ARO Midwinter Meeting; 17: 24.
  • Xu, L. (1993). A study on the correlation between evoked otoacoustic emissions and subjective hearing thresholds. Beidaihe: Symposium on Basic Research of Otorhinolaryngology.
  • Harris, F., Probst, R., Plinkert, P., Xu, L. (1993). Influence of interference tones on 2f1-f2 acoustic distortion products. Groningen: Symposium on Biophysics of Hair Cell Sensory System.
  • Xu, L., Roede, J., Probst, R., Harris, F. (1993). Otoacoustic emissions evoked by single versus multiple tonepips in humans. Abstr ARO Midwinter Meeting; 16: 98.
  • Roede, J., Harris, F., Probst, R., Xu, L. (1993). The repeatability of distortion-product otoacoustic emissions in normally hearing humans. Lyon: International Congress on Otoacoustic Emissions.
  • Roede, J., Harris, F., Probst, R., Xu, L. (1992). Die Reproduzierbarkeit der Distorsionsprodukte otoakustischer Emissionen (DPOAE) 2f1-f2 bei normalhörenden Erwachsen. . Wurzburg: ADANO.
  • Xu, L. (1990). Computer-aided three-dimensional reconstruction of the inner ear structure: A review. 6 . Foreign Medicine (Section of ORL); 14: 345-348.
  • Xu, L. (1989). Otoacoustic emission and its clinical significance and application: An overview. 3 . Foreign Medicine (Section of ORL); 13: 129-133.
  • Xu, L. (1988). Progress in immunological research of Meniere's disease: A review. 4 . Foreign Medicine (Section of ORL); 12: 200-203.
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