Research Works

Publications

  1. S. Hauser, A. Sivaprakasam, H. Bharadwaj, M. Heinz, “Precision Diagnostics for Complex Sensorineural Hearing Loss,” Mechanics of Hearing Workshop 2024 (MoH 2024), Ann Arbor, Michigan, USA. Zenodo

  2. A. Farhadi, S. Hauser, A. Sivaprakasam, M. Heinz, “Simultaneous Recording of Otoacoustic Emissions and Envelope-Following Responses to Evaluate Efferent Influences on Neural Coding,” Mechanics of Hearing Workshop 2024 (MoH 2024), Ann Arbor, Michigan, USA. Zenodo

  3. F. Deloche, S. Parida, A. Sivaprakasam, M. Heinz,“Estimation of Cochlear Frequency Selectivity Using a Convolution Model of Forward-Masked Compound Action Potentials,” Journal of the Association for Research in Otolaryngology (2024). DOI: 10.1007/s10162-023-00922-1

  4. A. Sivaprakasam, H. Wang, R. Cooper, and A. Koontz,“Innovation in Transfer Assist Technologies for Persons with Severe Disabilities and Their Caregivers,” IEEE Potentials, vol. 36, no. 1, pp. 34-41

Selected Conference Presentations

For full list, see Curriculum Vitae

Neural Coding of Pitch and Modulations

  1. A. Sivaprakasam, S. Hauser, H. Bharadwaj, M. Heinz, “Subtypes of Sensorineural Hearing Loss Variably Alter the Neural Encoding of Fundamental Frequency.” presented at the Auditory System Gordon Research Conference (GRC). Smithfield, RI, 2024.

  2. A. Sivaprakasam, H. Bharadwaj, M. Heinz, “Cross-Species Investigations of Place and Time Coding of Pitch Using Envelope-Following Responses.” presented at Association for Research in Otolaryngology 47th Annual MidWinter Meeting, Anaheim, CA, 2024

  3. A. Farhadi, S. Hauser, A. Sivaprakasam, M. Heinz, “Evaluation of Efferent Influences on Neural Coding Using Pre-Clinical Models of Sensorineural Hearing Loss.” presented at 186th Acoustical Society of America Meeting. Ottawa, ON, 2024.

  4. A. Farhadi, M. Patra, A. Sivaprakasam, M. Heinz, “Investigating Potential Sources of Modulation Enhancement in Noise through Physiologically Recorded and Model Neural Responses.” presented at Association for Research in Otolaryngology 47th Annual MidWinter Meeting, Anaheim, CA, 2024.

  5. A. Sivaprakasam, I. Schweinzger, H. Bharadwaj, M. Heinz, “Upper-Harmonic Deficits in Temporal Envelope Coding of Tone Complexes and Amplitude Modulations Differentiate Inner Hair Cell Damage From Synaptopathy,” presented at Association for Research in Otolaryngology 46th Annual MidWinter Meeting, Orlando, FL, 2023.

  6. A. Sivaprakasam, I. Schweinzger, H. Bharadwaj, M. Heinz, “Inner Hair Cell Damage and Cochlear Synaptopathy Differentially Impact Neural Envelope Coding of Modulations and Pitch,” presented at the 9th Midwest Auditory Research Conference, Ann Arbor, MI, 2022. (Talk)

  7. I. Schweinzger, A. Sivaprakasam, M. Heinz, “Differentiating Inner Hair Cell Dysfunction From Cochlear Synaptopathy Using Non-Invasive Measures of Temporal Envelope Coding in Chinchilla,” presented (virtually) at the Association for Research in Otolaryngology 45th Annual MidWinter Meeting, San Jose, CA, 2022.

Computational Modeling of Neurophysiology & Frequency Selectivity

  1. M. Patra, A. Farhadi, A. Sivaprakasam, D. Axe, M. Heinz, “Refinement of Inner Hair Cell Dysfunction in a Phenomenological Auditory Nerve Model Using Physiological and Single-Unit Recordings following Selective IHC Dysfunction.” presented at Association for Research in Otolaryngology 47th Annual MidWinter Meeting, Anaheim, CA, 2024.

  2. M. Patra, A. Sivaprakasam, D. Axe, M. Heinz, “Testing Phenomenological Auditory-Nerve Model Predictions for Selective Inner- and Outer-Hair-Cell Dysfunction.” presented at the 184th Acoustical Society of America Meeting. Chicago, IL, 2023.

  3. F. Deloche, A. Sivaprakasam, M. Heinz, “Effect of Suppressive Masking on the Dynamic Range of Auditory-Nerve Responses: Characterization With Forward-Masked Compound Action Potentials,” presented at Association for Research in Otolaryngology 46th Annual MidWinter Meeting, Orlando, FL, 2023.

  4. F. Deloche, A. Sivaprakasam, M. Heinz, “Characterization of Cochlear Compressive Nonlinearities using Forward-Masked Compound Action Potentials,” presented at the 19th International Symposium on Hearing, Lyon, France, 2022.

  5. A. Sivaprakasam, H. Bharadwaj, M. Heinz, “The Role of Envelope and Temporal Fine Structure in Auditory Neural Coding of Timbre in Normal and Impaired Hearing,” presented (virtually) at Neuroscience 2021, Chicago, IL, 2021.

Translational Research & Large-Scale Data Analysis

  1. V.M. Athreya, A. Sivaprakasam, H. Ginsberg, H. Bharadwaj, M. Heinz, “Pioneering Cortical Assays of Gap Detection to Explore Temporal Processing in Chinchilla using a Multi-Channel Mini-EEG Cap.” presented at Association for Research in Otolaryngology 47th Annual MidWinter Meeting, Anaheim, CA, 2024.

  2. A. Sivaprakasam, S. Hauser, N. Seidl, D. Hake, H. Bharadwaj, M. Heinz, “Towards an Open-Source Precision Audiological Diagnostics Core for Large-Scale Data Analysis.” presented at the Virtual Conference on Computational Audiology 2023.

  3. A. Sivaprakasam, V.M. Athreya, H. Ginsberg, H. Bharadwaj, M. Heinz, “A Chinchilla Mini-EEG Cap Improves Cross-Species Translation for Cortical and Subcortical Evoked Potentials,”presented at Association for Research in Otolaryngology 46th Annual MidWinter Meeting, Orlando, FL, 2023.

Medical Education and Innovation

  1. B. Duggan, D. Wilson, C. Earl, M. Libke, A. Sivaprakasam, N. Patel, I. Demaree, M. Feucht, “Medical Students as Innovators: ​The Design and Feasibility Assessment of a Novel Prototype Closed-Loop Oxygen Flow Control Device Using Simulation and Physiological Modeling​” presented at IUSM Education Day, Indianapolis, IN, 2024.

  2. Z. Guckien, A. Woloshuk, N. Patel, A. Sivaprakasam, A. Warrick, L. Garcia, “Advancing Innovation in Medicine: Expanding the Physician’s Toolbox” presented at IUSM Education Day, Indianapolis, IN, 2021.

  3. A. Woloshuk, A. Sivaprakasam, N. Patel, A. Warrick, A. Witten, L. Brennan, Z. Guckien, N. Diggins, L. Garcia, L. Wang, J. Acchiardo, J. Merrell, “A Prototype ECG for Neonatal Resuscitation,” presented at the IUSM Student Research Symposium, Indianapolis, IN, 2020: