Clinical Research Directory

Network Connectivity and Temporal Processing in Adolescents Who Stutter

The specific purpose of this clinical trial is to compare performance on rhythm perception and production tasks between children who stutter and children who do not stutter. The overall project also aims to investigate how performance on rhythm tasks may be related to brain activity (non-clinical trial).

Speech Signals in Stuttering

The purpose of this research study is to understand how speech and language are processed in the brain. This study will provide information that may help with the understanding how speech and language are processed in children and whether there may be differences between children who stutter and children who do not stutter. This project will evaluate these neural processes for speech signals in children who stutter and control subjects through a battery of behavioral speech and language tests, electroencephalography-based (EEG) tasks, functional magnetic resonance imaging (fMRI), and computational modeling.

Transcranial Alternating Current Stimulation (tACS) in Stuttering

The purpose of this study is to investigate how mild, noninvasive electrical brain stimulation affects speech relevant brain areas, which may in turn affect speech fluency and speaking-related brain activity in people that stutter. The long-term goal of this study is to test the therapeutic potential of transcranial alternating current stimulation (tACS) for the treatment of stuttering. The study team hypothesizes that if stuttering involves impaired initiation of motor programs, delta-tuned tACS will strengthen communication between brain regions and decrease stuttering. Therefore, delta-tuned sensorimotor tACS will be paired with fluency-induced speech (choral reading), which is hypothesized to decrease stuttering via improved auditory motor integration.

The Development of Stuttering in Young Children

The goal of this longitudinal research is to learn why some children "grow out" of stuttering, while others persist. Children who do and do not stutter aged 3-6 years are eligible to participate in our study. During the study, children's speech and language abilities will be assessed with standardized assessments, and they complete several child-friendly experiments. During these experiments, brain activity will be recorded using specialized caps while children describe pictures, children will speak in two virtual-reality scenarios, and produce speech while keeping to a beat.

Exploring the Nature, Assessment and Treatment of Stuttering

The purposes of this study are to 1) investigate potential speech, language, and psychosocial contributions to the experience of stuttering in monolingual and multilingual speakers, and to 2) evaluate interdisciplinary, telehealth, and speech-language pathology treatment methods and clinical training specific to fluency disorders.