The Central Control of Laryngeal Function

Dunker, E.

doi:10.1111/j.1749-6632.1968.tb56754.x

Cited by 5 publications

(3 citation statements)

References 11 publications

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“…Several investigators in recent years have suggested that short-latency auditory-laryngeal reflexes may play an important role in phonatory control during speech and singing (Dunker, 1968;Kirchner and Suzuki, 1968;Suzuki and Sasaki, 1977;Wyke and Kirchner, 1976). For example, ' Wyke and Kirchner suggested that one aspect ofphonatory control may involve "acoustic automonitoring" via short-latency acoustico-laryngeal reflexes, "operating perhaps through the brain stem projections of the cochlear nuclei to the caudal reticular system, the inferior colliculi, the olive or the cerebellum" (1976, pp.…”

Section: Introductionmentioning

confidence: 97%

Human laryngeal responses to auditory stimulation

Sapir

McClean

Larson

1983

The Journal of the Acoustical Society of America

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In spite of various claims for the presence and functional significance of brainstem reflexes in phonatory control, very little is known about these reflexes in humans. The present study was aimed at studying auditory-laryngeal reflexes in human subjects during sustained phonation. Fourteen subjects sustained phonation at constant voice pitch and voice intensity while receiving auditory stimulation with clicks of different intensity levels. Electromyographic (EMG) recordings from the cricothyroid muscle were obtained in two of the subjects. The voice signal was transduced with a throat microphone and bandpass filtered to isolate the fundamental frequency (FO). The filtered signal was fed to a frequency meter, which yielded a voltage proportional to FO. This FO voltage and the rectified EMG were signal averaged relative to the click. Short-latency changes in FO (50 ms) and in cricothyroid EMG (11 ms) were observed in response to auditory stimulation. The magnitude of the EMG and FO responses were well correlated with each other and with the intensity of the stimulus. The EMG response did not habituate with repeated stimulation. The neuromuscular origins of the auditory-laryngeal reflexes and their significance to phonatory control are discussed.

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Section: Introductionmentioning

confidence: 97%

Human laryngeal responses to auditory stimulation

Sapir

McClean

Larson

1983

The Journal of the Acoustical Society of America

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“…This is difficult due to short-latency audio-laryngeal reflexes which play a role in controlling phonation. External sound stimulates the reflex, which manifests in a response by the intralaryngeal muscles (2,3). While these responses play a key role in the auditory feedback control of phonation (4), they are problematic when measuring P s .…”

Section: Introductionmentioning

confidence: 99%

Estimating Subglottal Pressure via Airflow Interruption with Auditory Masking

Hoffman

Jiang

2009

Journal of Voice

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Objective-Current noninvasive measurement of subglottal pressure using airflow interruption often produces inconsistent results due to the elicitation of audio-laryngeal reflexes. Auditory feedback could be considered as a means of ensuring measurement accuracy and precision. The purpose of this study was to determine if auditory masking could be used with the airflow interruption system to improve intrasubject consistency.Study Design-A prerecorded sample of subject phonation was played on a loop over headphones during the trials with auditory masking. This provided subjects with a target pitch and blocked out distracting ambient noise created by the airflow interrupter.Methods-Subglottal pressure was noninvasively measured using the airflow interruption system. Thirty subjects, divided into two equal groups, performed ten trials without auditory masking and ten trials with auditory masking. Group one performed the normal trials first, followed by the trials with auditory masking. Group two performed the auditory masking trials first, followed by the normal trials.Results-Intrasubject consistency was improved by adding auditory masking, resulting in a decrease in average intrasubject standard deviation from 0.93 ± 0.51 to 0.47 ± 0.22 cmH 2 O (p < . 001).Conclusions-Auditory masking can be used effectively to combat audio-laryngeal reflexes and aid subjects in maintaining constant glottal configuration and frequency, thereby increasing intrasubject consistency when measuring subglottal pressure. By considering auditory feedback, a more reliable method of measurement was developed. This method could be employed by clinicians, as reliable, immediately available values of subglottal pressure are useful in evaluating laryngeal health and monitoring treatment progress.

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“…For example, the vagus nerve has been shown to contain both motor and sensory fibers for laryngeal innervation (Lemere, 1932;Pressman and Kelemen, 1955;Dunker, 1966). It has been demonstrated that the larynx is pre-set prior to phonation (Faaborg-Andersen, 1957), and hypotheses have been made suggesting that afferent information may be utilized during the entire phonation process.…”

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confidence: 99%