National Center for Voice and Speech (NCVS)- University of Colorado-Boulder

Lorraine Ramig, Ph.D., CCC-SLP
Senior Scientist,
University of Colorado-Boulder


Angela E. Halpern, MS, CCC-SLP
Research Associate, University of Colorado-Boulder


Jennifer Spielman, MM, MA, CCC-SLP
Research Associate, University of Colorado-Boulder


The Denver site of the NCVS, under the direction of Dr. Lorraine Ramig, is an affiliate of The University of Colorado-Boulder’s department of Speech, Language & Hearing Sciences. The focus of the NCVS-Denver site is to study the efficacy of voice and speech treatment for individuals with Parkinson disease and other neurological disorders. Dr. Ramig’s team has been conducting voice and speech research for over 20 years, with previous research resulting in an internationally recognized, effective voice and speech treatment for people with Parkinson disease.

Mailing Information:
The National Center for Voice and Speech -Denver
1391 Speer Blvd. Suite 230
Denver, CO 80204
Phone: 303-534-0324
Fax: 303-534-1461

Voice and Speech Studies in Parkinson Disease

Past and Present Research: Through research funded by the National Institutes of Health (NIH-NIDCD), the Office of Education (OE-NIDRR), and numerous private foundations (Davis Phinney Foundation, Parkinson's Alliance, Michael J Fox Foundation), past and present members of the Parkinson's Team have studied the effects of behavioral, surgical and pharmacological interventions on speech and voice disorders in Parkinson's disease and other neurological disorders. Much of this research has centered around the effectiveness of intensive voice therapy (LSVT®) for improving speech and voice in PD. However, current efforts also extend to the study of non-speech behaviors, including swallow function and nonverbal communication.
Current projects include:

  • The study of alternate speech therapies for Parkinson disease
  • The study of underlying neural mechanisms of speech and voice in Parkinson disease, using PET imaging
  • The study of the spreading of effects of voice and speech treatments to verbal and nonverbal communication systems, as well as to non-speech behaviors
  • Applying principles of intensive voice therapy to physical therapy in Parkinson disease.

The Parkinson research team is actively recruiting individuals with and without Parkinson disease for our ongoing studies. Please follow the link below to find out more information about our research study:

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