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Relationships between selected auditory and phonatory latency measures in normal speakers.
1University of Texas, Dallas.
Journal of Speech and Hearing Research
|March 1, 1990
Summary
This study reveals a connection between the auditory and voice production systems in the brainstem for typical speakers. Faster auditory processing, measured by auditory brainstem response, correlated with quicker laryngeal reaction times.
Area of Science:
- Neuroscience
- Speech and Hearing Sciences
- Auditory Neuroscience
Background:
- The interaction between auditory and phonatory systems is crucial for speech production.
- Understanding this interaction at the brainstem level can provide insights into speech control mechanisms.
Purpose of the Study:
- To investigate the relationship between auditory processing speed and laryngeal reaction time in normal speakers.
- To determine if auditory brainstem response (ABR) parameters correlate with phonatory reaction times.
Main Methods:
- Thirty-four normal-hearing participants without speech disorders completed the study.
- Auditory brainstem responses (ABRs) were recorded at high and low stimulus rates.
- Laryngeal reaction time (LRT) was measured by the time taken to phonate /a/ after an /s/ cue.
Main Results:
- Significant positive linear relationships were found between LRT measures (MLRT and BLRT) and specific ABR interpeak intervals (Waves III-V and I-V).
- These correlations were observed at high stimulus presentation rates during ABR recording.
- The findings suggest a direct interaction between auditory and phonatory systems at the brainstem level.
Conclusions:
- The auditory and phonatory systems interact at the brainstem level in normal speakers.
- This interaction is evidenced by the correlation between auditory processing speed and laryngeal motor control.
- These findings support previous research on auditory-phonatory system interaction in various speaker populations.