Interpersonal Neurophysiology Lab

In everyday life, our cognitive abilities, emotions, and motor skills interact to create fluent conversations. In some situations and for some populations, this social communication is often challenging.

About the Interpersonal Neurophysiology Lab

We focus on understanding how cognitive, linguistic, and motoric factors, and their interactions, contribute to fluency in speech performance. We seek to better understand how the demands of communication in everyday life contributes to fluency and motor speech disorders

Speech Motor Performance

Individual differences in speech motor performance affect the effectiveness and ease of our everyday communication

Motivation & Cognition

Individual differences in motivational direction and intensity, as well as cognitive control, affect our speech-language production in everyday life


Individual differences in linguistic abilities, from syntax to pragmatics, affect speech performance

Our Research

There is increasing interest in understanding how vulnerabilities in brain function are associated with fluency disorders, such as developmental stuttering, a disorder characterized by the involuntary production of repetitions, prolongations, and silent blocks during speech. We research speech and language ability at multiple levels of analysis, includes measures of brain function (EEG and fMRI), autonomic nervous system activation, neuromuscular activation (EMG), articulatory kinematics (motion capture), and perceptible speech behavior. It is our hope that increased knowledge of the interpersonal neurophysiology underlying fluent speech performance will improve treatment approaches for individuals with speech-language disorders

Recent scientific research has made great strides in identifying the complex mechanisms that play a role in fluency disorders, such as stuttering and cluttering. For most people who stutter, it is likely that speech disfluency emerges in early childhood due to aberrant interactions between parts of the brain responsible for cognition, language, emotion, and speech motor control. However, it remains unclear how these aberrant interactions directly produce stuttering behavior, and develop across the lifespan

Current Projects

Remote Study of Speech Production

Currently Recruiting Children and Adults Who Do or Do Not Stutter and/or Clutter.
If you would like to participate, please send us your information below! 

EEG Study of Motivation & Speech Production

Currently Recruiting Children and Adults Who Do and Do Not Stutter and/or Clutter
If you would like to participate, please send us your information below! 

Participate in a Study

The Interpersonal Neurophysiology Lab, within the Department of Communication Sciences and Disorders at the University of Delaware, is located in the sixth floor of the Tower at STAR, in Newark, Delaware.

We are currently recruiting people with and without fluency disorders (stuttering/cluttering) between the ages of 8 and 65. If you would like to participate in a current study, or would like to learn more, contact our research team at:

The Tower at STAR | College of Health Sciences | University of Delaware
100 Discovery Blvd | Room 628
Newark, DE 19713