Stuttering: in need of a unifying conceptual framework

Area of Science:

• Neuroscience
• Speech-Language Pathology
• Motor Control

Background:

• Speech fluency and disfluency exist on a continuum of motor coordination.
• Speech production involves complex interactions of sensory-motor pathways and muscle activation.

Purpose of the Study:

• To explain speech fluency and disfluency through a unified motor control framework.
• To interpret specific stuttering phenomena using neuromotor principles.

Main Methods:

• Conceptual analysis of speech motor control processes.
• Application of neuromotor principles to explain stuttering phenomena (adaptation, masking, whispering, voicing deviations).

Main Results:

• Perceptually fluent and disfluent speech arise from variations in motor coordination.
• Speech incoordination disorders can result from aberrant inputs affecting sensory-motor pathways.
• Stuttering phenomena are interpretable via neuromotor processes.

Conclusions:

• Speech disorders, including stuttering, can be understood as dysregulations in motor control.
• Psychological, psychosocial, and physiological variables can impact speech motor control.
• Neuromotor principles offer a framework for understanding and potentially treating stuttering.