Current Lab Members
Lab Leadership
Cara Stepp (she/her), Ph.D., directs the STEPP LAB for Sensorimotor Rehabilitation Engineering and is a Professor in the Departments of Speech, Language & Hearing Sciences, Otolaryngology – Head and Neck Surgery, and Biomedical Engineering at Boston University. She received the S.B. in Engineering Science from Smith College, S.M. in Electrical Engineering and Computer Science from Massachusetts Institute of Technology, and Ph.D. in Biomedical Engineering from the Harvard-MIT Division of Health Sciences & Technology. She completed postdoctoral training in Computer Science & Engineering and Rehabilitation Medicine at the University of Washington. She enjoys family time with her husband Boudu, daughter MJ, and dog Cruz.
Jenny Vojtech, (she/her), MS, Ph.D., is a research assistant professor in the Department of Speech, Language, and Hearing Sciences and serves as the Associate Director of the Stepp Lab. Jenny holds a Ph.D. in Biomedical Engineering from Boston University, where she studied computational methods to improve clinical voice assessments in the Stepp Lab. She returned to Boston University after working as a Senior Research Scientist at Delsys, Inc., where she focused on creating strategies and technologies for applications in assistive technology for communication and clinical evaluations of speech and voice.
Associated Faculty
Joseph Perkell, Ph.D, D.M.D, is a senior research scientist in the Department of Speech, Language and Hearing Sciences at Boston University. He received his S.B. in Mechanical Engineering from MIT, D.M.D from Harvard School of Dental Medicine, and PhD in Speech Communication from MIT. Dr. Perkell’s primary area of research is in speech motor control, with a strong focus on speech kinematics, constraints and motor control strategies, and the role of hearing. His research laboratory at MIT developed the EMMA system, the first electromagnetic articulometer system, which was demonstrated to have the accuracy and reliability required for rigorous research on speech kinematics. Dr. Perkell has also studied the brain mechanisms underlying speech motor control and the influence of these mechanisms on speech kinematics and acoustics.
Magdalen Balz, MS, CCC-SLP, is a Clinical Assistant Professor in the Department of Speech, Language & Hearing Sciences at Boston University. She received her B.S. in Communication Sciences and Disorders from the University of New Hampshire and her M.S. in Speech, Language & Hearing Sciences from Boston University. Maggie is currently a doctoral student at UMass Boston in Gerontology. Prior to returning to BU as clinical faculty, Maggie was a speech language pathologist at Spaulding Rehabilitation Hospital and Massachusetts General Hospital in Boston, MA. Her clinical and research interests include assessment and treatment of cognitive and language abilities for people with neurodegenerative diagnoses, as well as preventative cognitive intervention for older adults to maintain communication and social connection.
Daniel Buckley, MS, CCC-SLP, is a faculty lecturer in the Department of Speech, Language & Hearing Sciences at Boston University. He received his M.S. in Communication Sciences and Disorders from Massachusetts General Hospital Institute of Health Professions and a clinical fellowship in voice, swallowing, and upper airway disorders with the USC Voice Center at Keck Medicine of the University of Southern California. Daniel is a research speech-language pathologist in the Stepp lab, where his research focuses include high-speed laryngeal imaging, the acoustic evaluation of voice in various populations including laryngeal dystonia, muscle tension dysphonia, and Parkinson’s disease, and the efficacy of various novel voice interventions. He also supervises the Boston University Voice Clinic, and is a practicing clinician in the Department of Otolaryngology’s Voice and Swallowing Center at Boston Medical Center.
Staff
Manuel Díaz Cádiz (he/him) is a research fellow for the STEPP Lab. He received his M.S. in Electronic Engineering from the Universidad Técnica Federico Santa María. He was a visiting student of Real-time Embedded Software Group in the University of Waterloo, Waterloo, ON, Canada, in 2014; and is a former student of the the Voice Production Laboratory (VPLab) from the Department of Electronic Engineering at UTFSM. His research interests are related to digital signal processing, image and video analysis, computer vision algorithms and advanced digital systems design. He was a recipient of a CONICYT scholarship from the Chilean Government, an Emerging Leaders in the Americas Program (ELAP) scholarship from the Government of Canada and the award for best project of the Maxwell category at the EXPO ELO 2015 (UTFSM). He is interested in developing analysis tools and interfaces for speech related research, that involves acquisition, visualization, and analysis within the voice investigation area. He enjoys playing soccer, listening to science & space-related podcasts… and making homemade empanadas once in a while.
Alex Estrada (they/them) is a research fellow for the STEPP Lab. They graduated from Emerson College in 2022 with a BS in Communication Sciences & Disorders and a minor in Creative Writing. They’re excited to begin their research career at the Stepp Lab. Alex’s research interests include acoustics, speech breathing, comparative laryngeal anatomy, and listener perceptions of voice. They are also interested in ways to boost clinician competence in areas of AAC, dual sensory loss and gender affirming care. In their free time, Alex enjoys solving puzzles, learning about other scientific disciplines, listening to baseball games, and making all kinds of art.
Anastasia Haubrich (she/her) is a research fellow for the STEPP Lab. She graduated from Boston University in 2026 with a B.A. in Neuroscience and a minor in Speech Language and Hearing Science. She is interested in studying neurodegenerative disorders, and finding new way to diagnose and treat them. Outside of work, she volunteers at the Brookline Food Pantry, and enjoys rock climbing, exploring Boston and spending time with her friends and family.
Kaitlyn Siedman (she/her) is a research fellow for the STEPP Lab. She graduated from Trinity College in 2023 with a B.S. in Psychology and a self-designed minor in Linguistics. As a member of Trinity’s Psycholinguistics Lab, she previously researched how the presence of mirrors affects the intelligibility of speech and learned about the impact of different sensory modality alterations on speech perception and production. Kaitlyn volunteers at Camp Jabberwocky every summer, and she also has an extensive Converse collection — she’d love to talk to you about both the next time you’re in the lab :)
Postdoctoral Fellows
Ja Young Choi (she/her), Ph.D. is a postdoctoral fellow in the STEPP Lab. Before joining the STEPP Lab, she worked in the SoundBrain Lab at Northwestern University, studying speech sound representations in the brain using pupillometry and EEG. Ja Young earned her Ph.D. in Speech and Hearing Bioscience and Technology from Harvard University, where she conducted research on processing talker variability in speech perception. Ja Young’s primary research interests include the interplay between speech perception and speech production, with the goal of understanding the cognitive and motor mechanisms that support fluent speech communication. Prior to her doctoral work, Ja Young earned her B.A. in Linguistics and Cognitive Science from Rice University.
Doctoral Research Assistants
Allison Aaron (she/her), MS, CCC-SLP, is a Ph.D. student in Speech, Language, and Hearing Sciences at Boston University. She received a M.S. in Communication Sciences and Disorders with a concentration in voice at Massachusetts General Hospital Institute of Health Professions and went on to work as a laryngology-specialized speech-language pathologist at Stony Brook University Hospital. Allison has been devoted to both the science and art of voice since earning her B.A. in Vocal Performance and Psychology at Bucknell University. Allison’s clinical and research interests include vocal motor learning, voice and gender, and vocal hyperfunction.
Turley Duque (she/her) is a Ph.D. student in Speech, Language, and Hearing Sciences at Boston University. Turley is a McNair Scholar who received her B.A. in Behavioral Neuroscience from the University of San Diego. She is interested in researching the underlying mechanisms of speech motor control. In her free time, she loves to travel this world and others through the pages of books.
Shelby Martell (she/they), M.A., CCC-SLP, is a Ph.D. Student in Speech, Language, and Hearing Sciences at Boston University. They hold a B.A. in Communication Sciences and Disorders, a B.A. in Music, and a M.A. in Speech and Hearing Sciences from The Ohio State University. Prior to joining the STEPP Lab, they worked as a voice-specialized speech-language pathologist at Charlotte, Eye, Ear, Nose and Throat. Their previous research in the Voice and Resonance Lab at Ohio State University examined the temporal aspect of velar movement in singing and speech. Further inspired by their work as a clinician, Shelby’s current research interests include vocal hyperfunction, irritable larynx syndrome, and the interplay between voice, respiration, and swallowing.
Daphne Toglia Lulo is originally from Miami, Florida. She completed her undergraduate studies at the New College of Florida, the state’s designated honor college, modeled after the New College of Oxford. During this time, Daphne spent a semester at the University of Oxford taking tutorials focused on neurodegenerative diseases. In 2019, she was selected as a neurological surgery summer student fellow at the University of Washington, joining the Ferreira lab to conduct research on the genetic underpinnings of intracranial aneurysms. This research laid the groundwork for her undergraduate thesis and sparked her interest in translational research. Following graduation, Daphne took three gap years to gain diverse research experiences and mentor fellow first-generation and underrepresented minorities in STEM through the Washington Opportunity Scholarship Skills That Shine Mentorship Program. The first year, she returned to the University of Washington to complete her thesis work, further contributing to the discovery of somatic PDGFRB activating variants in fusiform cerebral aneurysms. Subsequent years involved work at an immuno-incological startup and from 2022-2023 Daphne was on the Neural Dynamics Neuroanatomy Team at the Allen Institute, where she focused on optimizing the histological pipeline for mapping out thalamo-cortico-thalamic circuits in mice.
Master’s Research Assistants
Angeli Fandiño (she/her) is a master’s student in the Speech-Language Pathology program at Boston University. She graduated from the University of Michigan in May 2025 with a B.A. in Linguistics and Psychology. Her clinical and research interests range from voice and resonance disorders to rehabilitation for individuals with post-traumatic brain injury. She is also very interested in contributing to the Stepp Lab’s research in gender-affirming care. In her free time, Angeli enjoys making music, playing basketball, traveling, and trying new restaurants.
Kyla Putterman (she/her) is a master’s student in the Speech-Language Pathology program at Boston University. She graduated from Vassar College with a B.A. in Psychological Science and a minor in Education in May 2025. Her interests include performance-based voice disorders, gender-affirming care, and many other aspects of voice therapy. In her free time, Kyla enjoys singing, reading, and exercising.
Audrey Sullivan (she/her) is a master’s student in the Speech-Language Pathology program at Boston University. She graduated from Franklin & Marshall College in 2023 as a joint major in Psychology and Spanish. In her free time, Audrey enjoys knitting, doing puzzles, and baking.
Irene Yoo (she/her) is a master’s student in the Speech-Language Pathology program at Boston University. She graduated from Tufts University with a B.S. in Cognitive and Brain Sciences and a B.A./M.A. in Child Study and Human Development. Her research interests are mainly the relationship between the brain and speech production as well as access to care for multilingual communities. In her free time, Irene enjoys baking banana bread (with chocolate chips, of course), spending time with friends, and photosynthesizing in the sun!
Undergraduate Research Assistants
Malaina Connors (she/her) is a undergraduate student at Boston University studying Biomedical Engineering. She is interested in the applications of engineering to healthcare. In her free time she enjoys reading, listening to music, coffee, and being with her friends.
Sophie Li (she/her) is an undergraduate student at Boston University studying Biomedical Engineering. She is passionate about finding new, innovative ways to improve healthcare. In her free time, she enjoys figure skating, traveling, and spending time with friends and family.
Max Murphy (he/him) is an undergraduate at Boston University studying Neuroscience and Philosophy. He is interested in medical research and neurodegenerative disorders, and hopes to pursue a career in medicine. Outside of Boston University, he works as an EMT and enjoys bouldering, skiing, cooking, and time with friends.