Current Research Projects

The Speech Perception Lab at the University of Florida has several active studies currently enrolling participants. If you are interested in participating in a study and think you qualify, please email our lab email at speechperception@phhp.ufl.edu with the IRB number and/or study title you would like to enroll in.

IRB 201902854

Spatial and spectral cue sensitivity in normal hearing listeners using cochlear implant stimulation

This study looks at the interaction of spectral and spatial-hearing benefits in multi-talker environments. Participants will complete three tasks: speech in noise, localization, and modulated tones. You will be involved in the study for two to three visits that last two to three hours each. Participants will be reimbursed for their time.
 
Enrollment criteria: Participants must be adults between the ages of 18 and 70 years, have normal hearing, no history of ear surgeries, speech, or language problems, and have spoken English since the age 5 or younger.

This study is no longer recruiting for participants.

IRB 202001705

Vocoder Training in Normal Hearing Listeners for Cochlear Implant Simulation

This study uses simulations of cochlear implants to examine implant programming techniques to determine whether training in simulated vowel and consonant sounds will improve overall speech understanding. Participants will select which sound they hear from a list, and will be given feedback regarding which was the correct selection. You will be involved in the study for three to four visits of one to two hours each, spread out over one to three weeks. Participants will be reimbursed for their time.

Enrollment criteria: Participants must be adults between the ages of 18 and 70 years, have normal hearing, no history of ear surgeries, speech, or language problems, and have spoken English since the age 5 or younger.

This study is no longer recruiting participants.

A comparison of hearing aids to DTCHDs in sound quality and speech perception

The purpose of this study is to see how HAs and DTCHDs perform when tested on speech perception and sound quality. Participants will listen in different environments and rank sound quality. Participants will also do speech in noise testing. The entire experiment will be done using 9 different devices.

Enrollment criteria: Participants must be adults, age 18-65 who have sensorineural hearing loss or normal hearing. Enrollment begins Fall 2021.

This project is currently enrolling volunteers. Please email at speechperception@phhp.ufl.edu if you are interested.

IRB 202100800

The effects of time immersed and language proficiency on Spanish and English speech perception in Spanish Heritage Speakers

This study examines speech perception of Spanish Heritage Speakers with varying degrees of language proficiency and time immersed in each language (Spanish & English), and how said factors affect perceptual capabilities. Participants will listen to a set of sentences in noise and repeat what they heard. You will be involved in the study for one visit of one to two hours. Participants will be reimbursed for their time.

To participate, you must be between the ages of 18 to 40 years old, a self-identified Spanish and English bilingual educated primarily in English with at least one Spanish speaking parent/caregiver.  Native English or Native Spanish speakers also qualify for this study as part of control groups. Additionally, participants should have normal hearing. Please email the Speech Perception Lab at speechperception@phhp.ufl.edu or call Dr. Sterling Sheffield at 352-273-6161 for more information.

Este estudio evalúa la percepción del habla en los oradores de la herencia hispana con diferentes grados del tiempo expuesto y proficiencia en cada lenguaje (español e ingles), y como esos factores influyen las habilidades en percepción. Los participantes escucharán conjuntos de frases y después deberían repetir lo que escucharon. Estará participando en el estudio por un día y tomara de una ha dos horas. Los participantes serán reembolsados por su tiempo.

Para participar, deberías tener 18 a 40 años de edad, autoidentificado como bilingüe (español e ingles) educado primordialmente en ingles, con al menos un padre/cuidador que hable español. Los hablantes nativos inglés o español también califican para este estudio. Finalmente, participantes deberían tener audición normal. Si estás interesado, puedes mandar al laboratorio de la percepción del habla un correo electrónico a speechperception@phhp.ufl.edu o llama Dr. Sterling Sheffield al 352-372-6161 para mas información.