Immediate phonetic convergence in a cue-distractor paradigm.

Area of Science:

• Speech Production
• Auditory Perception
• Human Motor Control

Background:

• Perceptuomotor integration describes how sensory perception influences motor actions.
• Previous research linked phonetic similarity of distractors to faster response times (RTs).
• The extent of perceptuomotor integration beyond RTs remained largely unexplored.

Purpose of the Study:

• To investigate whether perceptuomotor integration affects speech production beyond response times.
• To examine the impact of distractor Voice Onset Times (VOTs) on syllable production.
• To determine if response syllables converge to distractor VOTs.

Main Methods:

• Participants performed a cue-distractor task involving syllable production.
• Auditory distractor syllables were presented 150ms after visual cues.
• Distractor syllables systematically varied in Voice Onset Times (VOTs).

Main Results:

• Perceptuomotor integration was observed to extend beyond response time modulation.
• Response syllables showed a trial-specific convergence towards the VOT of the distractor syllables.
• This convergence indicates a direct influence of auditory distractor features on speech output.

Conclusions:

• Speech production is dynamically modulated by immediate auditory input.
• Perceptuomotor integration in speech involves fine-tuning of articulatory parameters like VOT.
• Findings advance our understanding of real-time speech perception-production interactions.