Assessing Ecologically Valid Methods of Auditory Feedback Measurement in Individuals With Typical Speech

Area of Science:

• Speech production and control
• Auditory feedback mechanisms
• Motor variability

Background:

• Auditory feedback is crucial for real-time speech control.
• Traditional methods for measuring auditory feedback control are complex and require specific conditions.
• Exploring more natural speech features is needed to understand auditory feedback's role.

Purpose of the Study:

• To investigate the relationship between speech production variability and auditory feedback control.
• To assess if measures like centering and baseline variability correlate with reflexive responses to auditory perturbations.

Main Methods:

• Compared two measures of speech variability (centering, baseline variability) with reflexive response magnitudes.
• Analyzed both laryngeal and articulatory subsystems in 30 adults with typical speech.

Main Results:

• Neither centering nor baseline variability showed a relationship with reflexive response magnitudes.
• No significant correlations were found between centering and baseline variability themselves.

Conclusions:

• The study did not support the hypothesis that centering and baseline variability reflect auditory feedback mechanisms in typical speakers.
• Future research should examine these relationships in populations with greater response variability, such as children or clinical groups.