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The effects of self-generated synchronous and asynchronous visual speech feedback on overt stuttering frequency
Gregory J Snyder1, Monica Strauss Hough, Paul Blanchet
1The Laboratory for Stuttering Research, Department of Communication Sciences & Disorders, University of Mississippi, University, MS 38677, USA. GSnyder@OleMiss.edu
Journal of Communication Disorders
|March 24, 2009
Summary
Self-generated visual speech feedback, including mirror and delayed video, significantly reduced stuttering frequency in participants. Both synchronous and asynchronous feedback methods proved equally effective in enhancing fluency for individuals who stutter.
Area of Science:
- Speech-language pathology
- Neuroscience of speech
- Human communication
Background:
- Externally generated visual speech feedback, like choral speech, is known to improve fluency in individuals who stutter.
- This prior research suggests that visual speech feedback can be a potent tool for enhancing speech fluency.
- The current study explores whether self-generated visual feedback offers similar fluency benefits.
Purpose of the Study:
- To investigate the impact of self-generated visual speech feedback on stuttering frequency.
- To compare the effects of synchronous (mirror) and asynchronous (delayed video) self-generated visual feedback on stuttering.
- To determine if self-generated visual feedback can reduce overt stuttering in individuals who stutter.
Main Methods:
- Eight adults who stutter participated in the study.
- Participants recited memorized phrases under control and experimental conditions.
- Experimental conditions involved viewing synchronous (mirror) or asynchronous (delayed video) visual speech feedback of their own speech.
Main Results:
- Self-generated visual feedback significantly decreased stuttering frequency.
- No significant difference in stuttering reduction was found between synchronous and asynchronous visual feedback conditions.
- The findings indicate that both types of self-generated visual feedback are effective in reducing stuttering.
Conclusions:
- Synchronous and asynchronous self-generated visual speech feedback are associated with significant reductions in stuttering.
- Results align with theoretical models involving mirror neuron systems and speech motor control.
- Further research is needed to understand the multi-sensory mechanisms underlying fluency enhancement through visual speech feedback.
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