G. Nike Gnanateja, Ph.D.

Speech Processing and Auditory Neuroscience Laboratory

Education

B.Sc. (Speech and Hearing),  All India Institute of Speech and Hearing, affiliated to the University of Mysore, Mysore, India
M.Sc. (Audiology), All India Institute of Speech and Hearing, affiliated to the University of Mysore, Mysore, India
Ph.D. (Audiology), All India Institute of Speech and Hearing, affiliated to the University of Mysore, Mysore, India
Post-Doctoral training in Auditory Neuroscience, University of Pittsburgh

Courses Taught

CS&D 858: Physiological Assessment in Auditory I
CS&D 859: Laboratory in Physiological Assessment of the Auditory System I
CS&D 860: Physiological Assessment in Audiology II
CS&D 861: Laboratory in Physiological Assessment of the Auditory System II

Research Statement

Dr. Gnanateja’s research investigates the neurophysiological processing of naturalistic speech with an eye towards developing ecologically valid objective tools to inform communication benefit from hearing rehabilitation strategies. His research uses a systems neuroscience approach employing multimodal neurophysiological approaches integrated with psychoacoustic tasks and naturalistic speech stimuli.

The goal of this lab is to develop neurophysiologically-informed, generalizable, and easy-to-use objective metrics of speech processing that can be seamlessly employed with hearing rehabilitative options such as hearing aids, cochlear implants, or auditory learning.

Select Publications

Gnanateja, G. N., Devaraju, D. S., Heyne, M., Quique, Y. M., Sitek, K. R., Tardif, M. C., Tessmer, R., Dial, H. R. (2022) On the Role of Neural Oscillations Across Timescales in Speech and Music Processing. Frontiers in Computational Neuroscience, 16. 872093. doi: 10.3389/fncom.2022.87209

Teichert, T., Gnanateja, G. N., Sadagopan, S., Chandrasekaran, B. (2021). A linear superposition model of envelope and frequency following responses may help identify generators based on latency.  Neurobiology of Language. doi: https://doi.org/10.1162/nol_a_00072

Gnanateja G. N., Rupp K., Llanos, F., Remick, M., Pernia, M., Sadagopan, S., Teichert, T., Abel, T. J., Chandrasekaran, B. (2021) Frequency-Following Responses to Speech Sounds Are Highly Conserved across Species and Contain Cortical Contributions. eNeuro, 23;8(6). doi: 10.1523/ENEURO.0451-21.2021.

Chandrasekaran, B., Tessmer, R., Gnanateja, G. N. (2021). Subcortical processing of speech sounds. In Holt., L., Peelle, J., Popper., A. (Eds.) Springer Handbook of Auditory Research. 74.  Springer, NY.

Gnanateja, G. N.,* McHaney, J. R.*, Smayda KE, Zinszer BD, Chandrasekaran B. (2020). Cortical Tracking of Speech in Delta Band Relates to Individual Differences in Speech in Noise Comprehension in Older Adults. Ear and Hearing, Published ahead of Print. * Joint first authors.

Gnanateja, G. N., & Maruthy, S. (2019). Dichotic phase effects on frequency following responses reveal phase variant and invariant harmonic distortion products. Hearing Research, 380, 84–99.

Devaraju, S. D., Gnanateja, G. N., Maruthy, S., & Uppunda, A. K. (2018). Gender differences in the Sub-Cortical Encoding of Infant Cry. Neuroscience Letters, 678, 138-143.

Maruthy, S., Kumar, U. A., & Gnanateja, G. N. (2017) Functional interplay between the putative measures of rostral and caudal efferent regulation of speech perception in noise. Journal of the Association of Research in Otolaryngology, 18(4), 635-648.

Gnanateja, G. N., Ranjan, R., Firdose, H., Sinha, S. K., & Maruthy, S. (2013). Acoustic basis of the context dependent brainstem encoding of speech. Hearing Research, 304, 28-32.