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Ananthanarayan (Ravi) Krishnan

Research Interests / Training Areas

  • Auditory Neuroscience
  • Brainstem encoding of complex sounds in normal and impaired ears
  • Pitch encoding and influence of language experience on pitch encoding in the brainstem and auditory cortex

Biography:

I received my B.Sc in Speech and Hearing from University of Mysore, India. I did my graduate work at the University of Memphis earning an M.A. in Audiology in 1980 and my Ph.D. in Hearing Science (Hearing and Brain track) in 1983 from the University of Texas-Dallas. I completed two postdoctoral fellowships, one in the Department of Neurology at the University of Wisconsin-Madison, and the second in the Department of Neurology at the University of California-Irvine. Before I accepted a faculty position at Purdue in 1998, I was an Audiology/Hearing Science faculty member at the University of Tennessee for nearly 10 years. My research focus is on the neural correlates of various psychoacoustic phenomena with an aim to understand the neural mechanisms underlying these phenomena. My current research utilizes brainstem and cortical evoked potentials to evaluate pitch processing and how experience shapes pitch processing at brainstem and cortical levels. I teach graduate level courses in the areas neural bases of hearing and auditory electrophysiology.

Recent Publications

Gandour, J.T., & Krishnan, A. (2014). Neural bases of lexical tone. In H. Winskel & P. Padakannaya (Eds.), South and Southeast Asian psycholinguistics (pp. 339-349). Cambridge, UK: Cambridge University Press.

Krishnan, A., Gandour, J.T., & Bidelman, G.M. (2012). Experience-dependent plasticity in pitch encoding: from brainstem to auditory cortex. NeuroReport, 23, 498-502.

Smalt, C.J., Krishnan, A., Bidelman, G.M., Ananthakrishnan, S., & Gandour, J.T. (2012). Neural correlates of cochlear distortion products and their influence on representation of pitch relevant information in the human brainstem. Hearing Research, 292, 26-34.

Krishnan, A., Bidelman, G.M., Smalt, C.J., Ananthakrishnan, S., & Gandour, J.T. (2012). Relationship between brainstem, cortical and behavioral measures relevant to pitch salience in humans.Neuropsychologia50(12), 2849-2859.

Krishnan, A., Gandour, J.T., Ananthakrishnan, S., Bidelman, G.M., & Smalt, C.J. (2011). Functional ear (a)symmetry in brainstem neural activity relevant to encoding of voice pitch: A precursor for hemispheric specialization? Brain and Language119(3), 226-231.

Krishnan, A.,Gandour, J.T., Ananthakrishnan, S., Bidelman, G., & Smalt, C. (2011). Linguistic status of timbre influences pitch encoding in the brainstem. NeuroReport, 22, 801-803.