Pamela Souza

Pamela Souza directs an active laboratory whose members study aspects of aging, cognition, and speech perception.  Her research interests include use of signal-processing amplification which affects acoustic speech cues, how those changes interact with listener age and cognitive status, and how research findings in this area can direct clinical practice.  Recent collaborative research includes how age and working memory influence response to hearing aid signal processing; consequences of loss of spectral (pitch) selectivity; and how traumatic brain injury affects speech and sound perception.  Dr. Souza is a Fellow of the American Speech-Language-Hearing Association and serves on the Psychoacoustic and Perception Technical Committee of the ASA.  Her work is supported by the National Institutes of Deafness and Communication Disorders. She is also a practicing clinical audiologist who has worked with patients ranging from pediatric to geriatric populations, including nearly 15 years as a VA audiologist.


PhD Audiology, Syracuse University
MS Audiology, Syracuse University
BS Communication Disorders, University of Massachusetts

Recent Publications

Hoover E, Gallun F, Souza P. (in press). Auditory and cognitive factors associated with speech-in-noise complaints following mild traumatic brain injury.  Journal of the American Academy of Audiology.

Shen J, Anderson M, Arehart K, Souza P. (2016).  Using cognitive screening tests in audiology.  American Journal of Audiology, 25, 319-331.

Reinhart P, Souza P. (2016).  Intelligibility and clarity of reverberant speech: Effects of wide dynamic range compression release time and working memory.  Journal of Speech, Language and Hearing Research, 59, 1543-1554.

Shen J, Wright R, Souza P. (2016).  On older listeners’ ability to perceive dynamic pitch.  Journal of Speech, Language and Hearing Research, 59, 572-82. 

Reinhart P, Souza P, Gallun F, Srinivasan N. (2016). Effects of reverberation and compression on consonant identification in individuals with hearing impairment.  Ear and Hearing, 37, 144-52.

Ohlenforst B, MacDonald E, Souza P. (2016).  Exploring the relationship between working memory, compressor speed and background noise characteristics.  Ear and Hearing, 37, 137-43

Souza P, Arehart K, Neher T. (2015). Working memory and hearing aid processing: Literature findings, future directions, and clinical applications.  Frontiers in Psychology 6, 526. doi:10.3389/fpsyg.2015.00526.

Hoover E, Souza P, Gallun F. (2015). Competing views on abnormal auditory results after mild traumatic brain injury.  Perspectives on Hearing and Hearing Disorders: Research and Diagnostics, 19, 12-21. doi:10.1044/hhd19.1.12. 

Davies-Venn E, Nelson P, Souza P. (2015).  Comparing auditory filter bandwidths, spectral ripple detection, spectral ripple discrimination and speech recognition: normal and impaired hearing.  Journal of the Acoustical Society of America, 138, 492-503.

Hoover E, Pasquesi L, Souza P. (2015).  Comparison of clinical and conventional gap detection tests.  Journal of the American Academy of Audiology, 26, 540-6.

Souza P, Arehart K. (2015).  Robust relationship between reading span and speech recognition in noise.  International Journal of Audiology, 54, 705-713. 

Arehart K, Souza P, Kates J, Lunner T, Pedersen M. (2015).  Relationship among signal fidelity, hearing loss, and working memory for digital noise suppression. Ear and Hearing, 36, 505-516. 

Souza P, Arehart K, Shen J, Anderson M, Kates J. (2015).  Working memory and intelligibility of hearing-aid processed speech.  Frontiers in Psychology, May 7;6, 526. doi: 10.3389. 

Charaziak K, Souza P, Siegel J. (2015).  Exploration of stimulus-frequency otoacoustic emission suppression tuning in hearing-impaired listeners.  International Journal of Audiology, 54, 96-105. 

Souza P, Wright R, Blackburn M, Hoover E, Gallun F. (2015). Sensitivity to temporal and spectral cues in listeners with hearing loss.  Journal of Speech, Language and Hearing Research, 58, 520-534. 

McCloy D, Wright R, Souza P. (2015).  Talker versus dialect effects on speech intelligibility: a symmetrical study.  Language and Speech, 58, 371-386. 

Souza P, Sirow L. (2014).  Relating working memory to compression parameters in clinically-fit hearing aids.  American Journal of Audiology, 23, 394-401.  

Souza P. (2014).  Hearing loss and aging: Implications for audiologists.  ASHA Access Audiology, Nov. 2014 issue [electronic publication]. 

Arehart K, Kates J, Souza P. (2014).  The role of metrics in studies of hearing and cognition.  ENT & Audiology News, 23, 92-93

Davies-Venn E, Souza P. (2014). The role of spectral resolution, working memory, and audibility in explaining variance in susceptibility to temporal envelope distortion.  Journal of the American Academy of Audiology, 25, 592-604

Recent Funding

National Institute on Deafness and Communication Disorders R01, Acoustic effects of WDRC amplification (principal investigator), 2010-2020. 

National Institute on Deafness and Communication Disorders R01.Characterizing variability in hearing aid outcomes among older adults (principal investigator).  2012-2017.

National Institute on Deafness and Communication Disorders R21/R33, Multi-site study of the efficacy of speech-perception training for hearing-aid users (consortium PI), 2010-2017.

National Institute on Deafness and Communication Disorders F31, Individual differences with WDRC amplification in challenging environments (sponsor), 2015-2017 

American Academy of Audiology Student Investigator Hearing Aid Grant. Objective and subjective assessments of patient susceptibility to reverberation (sponsor), 2015-2016

American Speech-Language-Hearing Foundation.  Subjective and objective effects of the interaction between cognition and hearing aid processing on reverberant speech (sponsor), 2014-2015.

National Institutes of Health F32.  Ability of older adults to benefit from dynamic pitch for speech recognition in noise (sponsor).  2015-2017.


CSD 411 Evaluation and use of amplification systems
CSD 467 Advanced topics in management of hearing impairment
CSD 508 Research in clinical audiology


Pamela Souza



Communication Sciences and Disorders


Frances Searle Building
2240 Campus Drive
Evanston , IL 60208-2952