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Matthew Leonard, PhD

Title(s)Assistant Professor, Neurological Surgery
SchoolSchool of Medicine
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    Other Positions
    Title(s)UCSF Weill Institute for Neurosciences


    Collapse Biography 
    Collapse Education and Training
    Occidental CollegeBA2006Cognitive Science
    University of California, San DiegoMS2008Cognitive Science
    University of California, San DiegoPhD2011Cognitive Science

    Collapse Research 
    Collapse Research Activities and Funding
    Neural Systems in Auditory and Speech Categorization
    NIH R01DC015504Jul 1, 2017 - Jun 30, 2022
    Role: Co-Investigator
    Peripheral Nerve Stimulation to Facilitate Language Learning
    DARPA N66001-17-2-4008Mar 2, 2017 - Feb 29, 2020
    Role: Co-PI
    Role Description: Human studies team leader
    The Neurophysiological Dynamics of Lexical and Sub-Lexical Representations
    NIH/NIDCD F32DC013486Oct 1, 2013 - Sep 30, 2016
    Role: Principal Investigator

    Collapse ORNG Applications 
    Collapse Websites
    Collapse In The News

    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.
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    1. Moses DA, Leonard MK, Makin JG, Chang EF. Real-time decoding of question-and-answer speech dialogue using human cortical activity. Nat Commun. 2019 07 30; 10(1):3096. PMID: 31363096.
      View in: PubMed
    2. Yi HG, Leonard MK, Chang EF. The Encoding of Speech Sounds in the Superior Temporal Gyrus. Neuron. 2019 Jun 19; 102(6):1096-1110. PMID: 31220442.
      View in: PubMed
    3. Kristin K. Sellers, William L. Schuerman, Heather E. Dawes, Edward F. Chang, Matthew K. Leonard. Comparison of Common Artifact Rejection Methods applied to Direct Cortical and Peripheral Stimulation in Human ECoG. 2019 Mar 1; 00:77-80.
      View in: Publisher Site
    4. Martin S, Mikutta C, Leonard MK, Hungate D, Koelsch S, Shamma S, Chang EF, Millán JDR, Knight RT, Pasley BN. Neural Encoding of Auditory Features during Music Perception and Imagery. Cereb Cortex. 2018 12 01; 28(12):4222-4233. PMID: 29088345.
      View in: PubMed
    5. Chiong W, Leonard MK, Chang EF. Neurosurgical Patients as Human Research Subjects: Ethical Considerations in Intracranial Electrophysiology Research. Neurosurgery. 2018 07 01; 83(1):29-37. PMID: 28973530.
      View in: PubMed
    6. Dichter BK, Breshears JD, Leonard MK, Chang EF. The Control of Vocal Pitch in Human Laryngeal Motor Cortex. Cell. 2018 06 28; 174(1):21-31.e9. PMID: 29958109.
      View in: PubMed
    7. Leonard MK, Desai M, Hungate D, Cai R, Singhal NS, Knowlton RC, Chang EF. Direct cortical stimulation of inferior frontal cortex disrupts both speech and music production in highly trained musicians. Cogn Neuropsychol. 2019 May - Jun; 36(3-4):158-166. PMID: 29786470.
      View in: PubMed
    8. Conant DF, Bouchard KE, Leonard MK, Chang EF. Human Sensorimotor Cortex Control of Directly Measured Vocal Tract Movements during Vowel Production. J Neurosci. 2018 03 21; 38(12):2955-2966. PMID: 29439164.
      View in: PubMed
    9. Khoshkhoo S, Leonard MK, Mesgarani N, Chang EF. Neural correlates of sine-wave speech intelligibility in human frontal and temporal cortex. Brain Lang. 2018 12; 187:83-91. PMID: 29397190.
      View in: PubMed
    10. Moses DA, Leonard MK, Chang EF. Real-time classification of auditory sentences using evoked cortical activity in humans. J Neural Eng. 2018 06; 15(3):036005. PMID: 29378977.
      View in: PubMed
    11. Rao VR, Leonard MK, Kleen JK, Lucas BA, Mirro EA, Chang EF. Chronic ambulatory electrocorticography from human speech cortex. Neuroimage. 2017 06; 153:273-282. PMID: 28396294.
      View in: PubMed
    12. Stephanie Martin, Christian Mikutta, Matthew K Leonard, Dylan Hungate, Stefan Koelsch, Edward F Chang, Jose del R. Millan, Robert T Knight, Brian N Pasley. Neural Encoding of Auditory Features during Music Perception and Imagery: Insight into the Brain of a Piano Player. 2017 Feb 7; 106617.
      View in: Publisher Site
    13. Leonard MK, Baud MO, Sjerps MJ, Chang EF. Perceptual restoration of masked speech in human cortex. Nat Commun. 2016 12 20; 7:13619. PMID: 27996973.
      View in: PubMed
    14. Moses DA, Mesgarani N, Leonard MK, Chang EF. Neural speech recognition: continuous phoneme decoding using spatiotemporal representations of human cortical activity. J Neural Eng. 2016 10; 13(5):056004. PMID: 27484713.
      View in: PubMed
    15. Leonard MK, Cai R, Babiak MC, Ren A, Chang EF. The peri-Sylvian cortical network underlying single word repetition revealed by electrocortical stimulation and direct neural recordings. Brain Lang. 2019 06; 193:58-72. PMID: 27450996.
      View in: PubMed
    16. Matthew K. Leonard, Edward F. Chang. Chapter 39 Direct Cortical Neurophysiology of Speech Perception. 2016 Jan 1; 479-489.
      View in: Publisher Site
    17. Leonard, M.K. Chang, E.F.Neurobiology of Language (G. Hickok & S.L. Small, Eds). Neural organization of speech perception: Intracranial Recording. 2015.
    18. Cibelli ES, Leonard MK, Johnson K, Chang EF. The influence of lexical statistics on temporal lobe cortical dynamics during spoken word listening. Brain Lang. 2015 Aug; 147:66-75. PMID: 26072003.
      View in: PubMed
    19. Leonard MK, Bouchard KE, Tang C, Chang EF. Dynamic encoding of speech sequence probability in human temporal cortex. J Neurosci. 2015 May 06; 35(18):7203-14. PMID: 25948269.
      View in: PubMed
    20. Ferjan Ramirez N, Leonard MK, Davenport TS, Torres C, Halgren E, Mayberry RI. Neural Language Processing in Adolescent First-Language Learners: Longitudinal Case Studies in American Sign Language. Cereb Cortex. 2016 Mar; 26(3):1015-26. PMID: 25410427.
      View in: PubMed
    21. Bridgman MW, Brown WS, Spezio ML, Leonard MK, Adolphs R, Paul LK. Facial emotion recognition in agenesis of the corpus callosum. J Neurodev Disord. 2014; 6(1):32. PMID: 25705318.
      View in: PubMed
    22. Leonard MK, Chang EF. Dynamic speech representations in the human temporal lobe. Trends Cogn Sci. 2014 Sep; 18(9):472-9. PMID: 24906217.
      View in: PubMed
    23. Matthew K. Leonard, Kristofer Bouchard, Edward F. Chang. Human superior temporal gyrus encoding of speech sequence probabilities. 2013 Nov 1; 134(5):4234-4234.
      View in: Publisher Site
    24. Emily Cibelli, Matthew Leonard, Edward Chang. Neural evidence for shared phonetic, phonological, and lexical processing of words and pseudowords. 2013 Nov 1; 134(5):4233-4233.
      View in: Publisher Site
    25. Leonard MK, Ferjan Ramirez N, Torres C, Hatrak M, Mayberry RI, Halgren E. Neural stages of spoken, written, and signed word processing in beginning second language learners. Front Hum Neurosci. 2013; 7:322. PMID: 23847496.
      View in: PubMed
    26. Ferjan Ramirez N, Leonard MK, Torres C, Hatrak M, Halgren E, Mayberry RI. Neural language processing in adolescent first-language learners. Cereb Cortex. 2014 Oct; 24(10):2772-83. PMID: 23696277.
      View in: PubMed
    27. Chan AM, Dykstra AR, Jayaram V, Leonard MK, Travis KE, Gygi B, Baker JM, Eskandar E, Hochberg LR, Halgren E, Cash SS. Speech-specific tuning of neurons in human superior temporal gyrus. Cereb Cortex. 2014 Oct; 24(10):2679-93. PMID: 23680841.
      View in: PubMed
    28. Travis KE, Curran MM, Torres C, Leonard MK, Brown TT, Dale AM, Elman JL, Halgren E. Age-related changes in tissue signal properties within cortical areas important for word understanding in 12- to 19-month-old infants. Cereb Cortex. 2014 Jul; 24(7):1948-55. PMID: 23448869.
      View in: PubMed
    29. Travis KE, Leonard MK, Chan AM, Torres C, Sizemore ML, Qu Z, Eskandar E, Dale AM, Elman JL, Cash SS, Halgren E. Independence of early speech processing from word meaning. Cereb Cortex. 2013 Oct; 23(10):2370-9. PMID: 22875868.
      View in: PubMed
    30. Leonard MK, Ferjan Ramirez N, Torres C, Travis KE, Hatrak M, Mayberry RI, Halgren E. Signed words in the congenitally deaf evoke typical late lexicosemantic responses with no early visual responses in left superior temporal cortex. J Neurosci. 2012 Jul 11; 32(28):9700-5. PMID: 22787055.
      View in: PubMed
    31. Katherine E. Travis, Matthew K. Leonard, Timothy T. Brown, Donald Hagler, Anders M. Dale, Jeff L. Elman, Eric Halgren. Investigating the spatiotemporal neural dynamics of lexico-semantic activity in 12–18 month old infants by combining magnetoencephalography and magnetic resonance imaging. 2011 Apr 1; 129(4):2493-2493.
      View in: Publisher Site
    32. Leonard MK, Torres C, Travis KE, Brown TT, Hagler DJ, Dale AM, Elman JL, Halgren E. Language proficiency modulates the recruitment of non-classical language areas in bilinguals. PLoS One. 2011 Mar 24; 6(3):e18240. PMID: 21455315.
      View in: PubMed
    33. Travis KE, Leonard MK, Brown TT, Hagler DJ, Curran M, Dale AM, Elman JL, Halgren E. Spatiotemporal neural dynamics of word understanding in 12- to 18-month-old-infants. Cereb Cortex. 2011 Aug; 21(8):1832-9. PMID: 21209121.
      View in: PubMed
    34. McDonald CR, Thesen T, Carlson C, Blumberg M, Girard HM, Trongnetrpunya A, Sherfey JS, Devinsky O, Kuzniecky R, Dolye WK, Cash SS, Leonard MK, Hagler DJ, Dale AM, Halgren E. Multimodal imaging of repetition priming: Using fMRI, MEG, and intracranial EEG to reveal spatiotemporal profiles of word processing. Neuroimage. 2010 Nov 01; 53(2):707-17. PMID: 20620212.
      View in: PubMed
    35. Leonard MK, Brown TT, Travis KE, Gharapetian L, Hagler DJ, Dale AM, Elman JL, Halgren E. Spatiotemporal dynamics of bilingual word processing. Neuroimage. 2010 Feb 15; 49(4):3286-94. PMID: 20004256.
      View in: PubMed