James B. Dewey, PhD

Title(s)Assistant Professor of Otolaryngology-Head and Neck Surgery
SchoolKeck School of Medicine of Usc
Address1501 San Pablo St, ZNI Rm 407
Health Sciences Campus
Los Angeles CA 90033
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    Collapse Overview 
    Collapse Overview
    The Dewey Lab studies the mechanical processes that underlie normal hearing and how these processes are affected in hearing-impaired ears. Current topics of investigation include (1) how sound causes the structures within the cochlear spiral to vibrate, (2) how these vibrations are amplified by the sensory outer hair cells, and (3) how this amplification process leads to the emission of sound by the ear.

    #Courses

    OHNS 500, Neuroanatomy and Neurophysiology in Speech, Language and Hearing (Y1, Fall Semester)
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    Collapse Research 
    Collapse Research Activities and Funding
    Role of tonic outer hair cell motility in cochlear amplification
    NIH R21DC019209Sep 23, 2020 - Aug 31, 2023
    Role: Principal Investigator
    Influence of hair bundle properties on cochlear mechanics
    NIH F32DC016211Apr 1, 2017 - Mar 31, 2020
    Role: Principal Investigator
    Auditory Function at the Base of the Human Cochlea
    NIH F31DC013710Jun 1, 2014 - May 31, 2016
    Role: Principal Investigator

    Collapse Bibliographic 
    Collapse Publications
    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help. to make corrections and additions.
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    Altmetrics Details PMC Citations indicate the number of times the publication was cited by articles in PubMed Central, and the Altmetric score represents citations in news articles and social media. (Note that publications are often cited in additional ways that are not shown here.) Fields are based on how the National Library of Medicine (NLM) classifies the publication's journal and might not represent the specific topic of the publication. Translation tags are based on the publication type and the MeSH terms NLM assigns to the publication. Some publications (especially newer ones and publications not in PubMed) might not yet be assigned Field or Translation tags.) Click a Field or Translation tag to filter the publications.
    1. Similar Tuning of Distortion-Product Otoacoustic Emission Ratio Functions and Cochlear Vibrations in Mice. AIP Conf Proc. 2024 Feb 27; 3062(1). Dewey JB, Shera CA. PMID: 38516507; PMCID: PMC10956552.
      View in: PubMed   Mentions:
    2. Bandpass Shape of Distortion-Product Otoacoustic Emission Ratio Functions Reflects Cochlear Frequency Tuning in Normal-Hearing Mice. J Assoc Res Otolaryngol. 2023 06; 24(3):305-324. Dewey JB, Shera CA. PMID: 37072566; PMCID: PMC10335997.
      View in: PubMed   Mentions: 2     Fields:    Translation:AnimalsCells
    3. The Remarkable Outer Hair Cell: Proceedings of a Symposium in Honour of W. E. Brownell. J Assoc Res Otolaryngol. 2023 04; 24(2):117-127. Ashmore JF, Oghalai JS, Dewey JB, Olson ES, Strimbu CE, Wang Y, Shera CA, Altoè A, Abdala C, Elgoyhen AB, Eatock RA, Raphael RM. PMID: 36648734; PMCID: PMC10121982.
      View in: PubMed   Mentions: 2     Fields:    Translation:AnimalsCells
    4. Cubic and quadratic distortion products in vibrations of the mouse cochlear apex. JASA Express Lett. 2022 11; 2(11):114402. Dewey JB. PMID: 36456371; PMCID: PMC9704500.
      View in: PubMed   Mentions: 3     Fields:    Translation:Animals
    5. Overturning the mechanisms of cochlear amplification via area deformations of the organ of Corti. J Acoust Soc Am. 2022 10; 152(4):2227. Altoè A, Dewey JB, Charaziak KK, Oghalai JS, Shera CA. PMID: 36319240; PMCID: PMC9578757.
      View in: PubMed   Mentions: 4     Fields:    Translation:AnimalsCells
    6. Cochlear outer hair cell electromotility enhances organ of Corti motion on a cycle-by-cycle basis at high frequencies in vivo. Proc Natl Acad Sci U S A. 2021 10 26; 118(43). Dewey JB, Altoè A, Shera CA, Applegate BE, Oghalai JS. PMID: 34686590; PMCID: PMC8639341.
      View in: PubMed   Mentions: 34     Fields:    Translation:AnimalsCells
    7. The Elusive Cochlear Filter: Wave Origin of Cochlear Cross-Frequency Masking. J Assoc Res Otolaryngol. 2021 12; 22(6):623-640. Altoè A, Charaziak KK, Dewey JB, Moleti A, Sisto R, Oghalai JS, Shera CA. PMID: 34677710; PMCID: PMC8599594.
      View in: PubMed   Mentions: 3     Fields:    Translation:Animals
    8. In vivo functional imaging of the human middle ear with a hand-held optical coherence tomography device. Biomed Opt Express. 2021 Aug 01; 12(8):5196-5213. Lui CG, Kim W, Dewey JB, Macías-Escrivá FD, Ratnayake K, Oghalai JS, Applegate BE. PMID: 34513251; PMCID: PMC8407818.
      View in: PubMed   Mentions: 7  
    9. LMO7 deficiency reveals the significance of the cuticular plate for hearing function. Nat Commun. 2019 03 08; 10(1):1117. Du TT, Dewey JB, Wagner EL, Cui R, Heo J, Park JJ, Francis SP, Perez-Reyes E, Guillot SJ, Sherman NE, Xu W, Oghalai JS, Kachar B, Shin JB. PMID: 30850599; PMCID: PMC6408450.
      View in: PubMed   Mentions: 28     Fields:    Translation:AnimalsCells
    10. Amplification and Suppression of Traveling Waves along the Mouse Organ of Corti: Evidence for Spatial Variation in the Longitudinal Coupling of Outer Hair Cell-Generated Forces. J Neurosci. 2019 03 06; 39(10):1805-1816. Dewey JB, Applegate BE, Oghalai JS. PMID: 30651330; PMCID: PMC6407303.
      View in: PubMed   Mentions: 47     Fields:    Translation:AnimalsCells
    11. Mammalian Auditory Hair Cell Bundle Stiffness Affects Frequency Tuning by Increasing Coupling along the Length of the Cochlea. Cell Rep. 2018 06 05; 23(10):2915-2927. Dewey JB, Xia A, Müller U, Belyantseva IA, Applegate BE, Oghalai JS. PMID: 29874579; PMCID: PMC6309882.
      View in: PubMed   Mentions: 25     Fields:    Translation:AnimalsCells
    12. A common microstructure in behavioral hearing thresholds and stimulus-frequency otoacoustic emissions. J Acoust Soc Am. 2017 11; 142(5):3069. Dewey JB, Dhar S. PMID: 29195446; PMCID: PMC5693793.
      View in: PubMed   Mentions: 6     Fields:    Translation:Humans
    13. Profiles of Stimulus-Frequency Otoacoustic Emissions from 0.5 to 20 kHz in Humans. J Assoc Res Otolaryngol. 2017 Feb; 18(1):89-110. Dewey JB, Dhar S. PMID: 27681700; PMCID: PMC5243260.
      View in: PubMed   Mentions: 14     Fields:    Translation:Humans
    14. Neuroplastin Isoform Np55 Is Expressed in the Stereocilia of Outer Hair Cells and Required for Normal Outer Hair Cell Function. J Neurosci. 2016 08 31; 36(35):9201-16. Zeng WZ, Grillet N, Dewey JB, Trouillet A, Krey JF, Barr-Gillespie PG, Oghalai JS, Müller U. PMID: 27581460; PMCID: PMC5005726.
      View in: PubMed   Mentions: 21     Fields:    Translation:AnimalsCells
    15. Efferent Modulation of Stimulus Frequency Otoacoustic Emission Fine Structure. Front Syst Neurosci. 2015; 9:168. Zhao W, Dewey JB, Boothalingam S, Dhar S. PMID: 26696843; PMCID: PMC4674573.
      View in: PubMed   Mentions: 7  
    16. Effects of contralateral acoustic stimulation on spontaneous otoacoustic emissions and hearing threshold fine structure. J Assoc Res Otolaryngol. 2014 Dec; 15(6):897-914. Dewey JB, Lee J, Dhar S. PMID: 25245498; PMCID: PMC4389962.
      View in: PubMed   Mentions: 5     Fields:    Translation:Humans
    17. Effects of fundamental frequency and vocal-tract length cues on sentence segregation by listeners with hearing loss. J Acoust Soc Am. 2011 Aug; 130(2):1006-19. Mackersie CL, Dewey J, Guthrie LA. PMID: 21877813; PMCID: PMC3190663.
      View in: PubMed   Mentions: 21     Fields:    Translation:HumansPHPublic Health
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    NIH Funding Acknowledgment: Important - All publications resulting from the utilization of SC CTSI resources are required to credit the SC CTSI grant by including the NIH funding acknowledgment and must comply with the NIH Public Access Policy.

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