Functional roles of the superior laryngeal nerve afferents in electrically induced vocalization in anesthetized cats

Shiba, Keisuke; Yoshida, Koh; Miura, Takumi

doi:10.1016/0168-0102(95)00877-v

Cited by 31 publications

(12 citation statements)

References 22 publications

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“…Davis and her colleagues proposed that relevant afferent input to lateral PAG neurons can modulate vocal outputs (Davis et al, 1993b(Davis et al, , 1996. Our study provides the first neuroanatomical evidence that afferent information from the larynx reaches the lateral PAG and supports the view that laryngeal afferent feedback via the PAG may regulate intralaryngeal muscle activity during vocalization (Davis et al, 1993b;Shiba et al, 1995).…”

Section: Significance Of Fos Activation In the Periaqueductal Graysupporting

confidence: 79%

“…A variety of tactile and proprioceptive stimuli occur during vocalization. Physiological studies have shown that the afferent input from the upper airways affects the timing of the vocalization motor pattern during PAG stimulation in the cat (Davis et al, 1993b;Sakamoto et al, 1993;Zhang et al, 1994;Shiba et al, 1995) and voice quality in squirrel monkey (Thoms and Jü rgens, 1981;Jü rgens and Kirzinger, 1985). Although the above studies suggest that the laryngeal afferent feedback via the PAG may play a role in the modulation of laryngeal muscle activity during vocalization, the neuroanatomical evidence of this control is lacking.…”

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confidence: 91%

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Laryngeal afferent stimulation enhances fos immunoreactivity in periaqueductal gray in the cat

et al. 1999

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Section: Significance Of Fos Activation In the Periaqueductal Graysupporting

confidence: 79%

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confidence: 91%

Laryngeal afferent stimulation enhances fos immunoreactivity in periaqueductal gray in the cat

et al. 1999

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“…In addition, the NRA projection to the PAG indicates the possibility of a feedback system between the PAG and NRA in controlling vocalization. Many authors have reported that pulmonary and laryngeal afferent inputs affect PAG-or PCS-induced vocalization (Testerman 1970;Thoms and Jürgens 1981;Davis et al 1993;Sakamoto et al 1993;Shiba et al 1995Shiba et al , 1997. Thus, several kinds of feedback, including not only external or response feedback but also feedback via internal neuronal circuits, may function in the control of voice production.…”

Section: Discussionmentioning

confidence: 99%

The nucleus retroambigualis controls laryngeal muscle activity during vocalization in the cat

et al. 1997

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The purpose of this study was to determine (1) whether the nucleus retroambigualis (NRA) plays an essential role in periaqueductal gray (PAG)-induced vocalization and (2) which NRA neurons are involved in the projection from the PAG to laryngeal motoneurons. Bilateral injections of the neurotoxin kainic acid into the NRA in decerebrate cats abolished PAG-induced vocalization; PAG stimulation after the injections no longer modulated vocal fold adductor or tensor activity, and only tonically, but no longer phasically, activated the abdominal muscles. In contrast, PAG-induced inspiratory excitation remained even after the injections. These results suggest that the NRA is essential for the vocal activation of the laryngeal adductor and abdominal muscles, and that an additional pathway from the PAG to respiratory motoneurons other than through the NRA is important for mediating PAG-induced inspiratory activation. Secondly, axonal projections of NRA neurons to the contralateral nucleus ambiguus (NA) were studied electrophysiologically. Five expiratory neurons, which had decrementing (n=4) or constant (n=1) firing patterns, were identified as both having axonal projections to the NA and receiving inputs from the PAG. Furthermore, following NA stimulation many constant-latency action potentials of silent cells were recorded in the vicinity of the NRA, where many silent cells were also orthodromically activated by PAG stimulation. No NRA augmenting expiratory neurons could be antidromically activated from the NA. It is suggested that the NRA and adjacent reticular formation integrate inputs from the PAG and send outputs to laryngeal motoneurons for vocalization.

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“…There is also evidence that laryngeal afferents influence vocalization. Shiba et al (251) studied electrically induced vocalizations in anesthetized cats before and after section of the internal branch of the superior laryngeal nerves (SLNs), or topical anesthesia of the laryngeal mucosa. These interventions resulted in the induced vocalizations becoming "hoarse," their pitch lowered and their duration reduced compared with the baseline control.…”

Section: Activities That Require Modification Of Airflow Vocalizationmentioning

confidence: 99%

Coordination of Breathing with Nonrespiratory Activities

Bartlett¹,

Leiter²

2012

Comprehensive Physiology

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Many articles in this section of Comprehensive Physiology are concerned with the development and function of a central pattern generator (CPG) for the control of breathing in vertebrate animals. The action of the respiratory CPG is extensively modified by cortical and other descending influences as well as by feedback from peripheral sensory systems. The central nervous system also incorporates other CPGs, which orchestrate a wide variety of discrete and repetitive, voluntary and involuntary movements. The coordination of breathing with these other activities requires interaction and coordination between the respiratory CPG and those governing the nonrespiratory activities. Most of these interactions are complex and poorly understood. They seem to involve both conventional synaptic crosstalk between groups of neurons and fluid identity of neurons as belonging to one CPG or another: neurons that normally participate in breathing may be temporarily borrowed or hijacked by a competing or interrupting activity. This review explores the control of breathing as it is influenced by many activities that are generally considered to be nonrespiratory. The mechanistic detail varies greatly among topics, reflecting the wide variety of pertinent experiments.

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Functional roles of the superior laryngeal nerve afferents in electrically induced vocalization in anesthetized cats

Cited by 31 publications

References 22 publications

Laryngeal afferent stimulation enhances fos immunoreactivity in periaqueductal gray in the cat

Laryngeal afferent stimulation enhances fos immunoreactivity in periaqueductal gray in the cat

The nucleus retroambigualis controls laryngeal muscle activity during vocalization in the cat

Coordination of Breathing with Nonrespiratory Activities

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