November 13, 2008
Charles Larson

Department Chair
Charles Larson

Charles Larson, department chair for The Roxelyn and Richard Pepper Department of Communication Sciences and Disorders at Northwestern, has been asked to give the annual "Zemlin" lecture at the 2008 American Speech-Language-Hearing Association (ASHA) convention. Held Nov. 20-22 at McCormick Place in Chicago, the ASHA convention will feature speakers from all over the world, as well as short courses and exhibits of products and services.

The Zemlin lecture is named for the late Willard Zemlin, a 20-year faculty member from the department of speech and hearing science at the University of Illinois at Urbana-Champaign. He was the author of the well-known textbook Speech and Hearing Science, Anatomy and Physiology.

Larson's lecture will cover the research agenda for the past 10 years on how speakers use auditory feedback for the control of voice pitch and intensity.

"We have found that when a speaker hears his or her voice suddenly changed in frequency or loudness, they respond by changing their vocal output to compensate for the change," Larson says. "I will also talk about our more recent studies in which we are trying to understand the brain mechanisms that control these responses."

Larson says he is "honored" to be asked to speak at the ASHA convention. "The others who have spoken in recent years are outstanding in the field, and I am very pleased to be associated with this group."

The American Speech-Language-Hearing Association is the professional, scientific, and credentialing association for more than 130,000 members and affiliates who are speech-language pathologists, audiologists, and speech, language, and hearing scientists - both in the United States and internationally.

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