http://www.cnr.it/ontology/cnr/individuo/prodotto/ID197349

Posterior cricoarytenoid muscle activity during wakefulness and sleep in normal adults (Articolo in rivista)

Type

Articolo in rivista (Classe)
Prodotto della ricerca (Classe)

Label

Posterior cricoarytenoid muscle activity during wakefulness and sleep in normal adults (Articolo in rivista) (literal)

Anno

1990-01-01T00:00:00+01:00 (literal)

Alternative label

Kuna ST, Smickley JS, Insalaco G (1990)
Posterior cricoarytenoid muscle activity during wakefulness and sleep in normal adults
in Journal of applied physiology (1985); American Physiological Society, Bethesda (Stati Uniti d'America)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Kuna ST, Smickley JS, Insalaco G (literal)

Pagina inizio

1746 (literal)

Pagina fine

1754 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

http://jap.physiology.org/content/68/4/1746.long (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

68 (literal)

Rivista

Journal of applied physiology (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

9 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

4 (literal)

Note

PubMe (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

Department of Internal Medicine, University of Texas Medical Branch, Galveston 77550-2778 (literal)

Titolo

Posterior cricoarytenoid muscle activity during wakefulness and sleep in normal adults (literal)

Abstract

Six normal adults were studied 1) to compare respiratory-related posterior cricoarytenoid (PCA) muscle activity during wakefulness and sleep and 2) to determine the effect of upper airway occlusions during non-rapid-eye-movement (NREM) sleep on PCA activity. A new electromyographic technique was developed to implant hooked-wire electrodes into the PCA by using a nasopharyngoscope. A previously described technique was used to induce upper airway occlusions during NREM sleep (Kuna and Smickley, J. Appl. Physiol. 64: 347-353, 1988). The PCA exhibited phasic inspiratory activity during quiet breathing in wakefulness and sleep in all subjects. Discounting changes in tonic activity, peak amplitude of PCA inspiratory activity during stage 3-4 NREM sleep decreased to 77% of its value in wakefulness. Tonic activity throughout the respiratory cycle was present in all subjects during wakefulness but was absent during state 3-4 NREM sleep. In this sleep stage, PCA phasic activity abruptly terminated near the end of inspiration. During nasal airway occlusions in NREM sleep, PCA phasic activity did not increase significantly during the first or second occluded effort. The results, in combination with recent findings for vocal cord adductors in awake and sleeping adults, suggest that vocal cord position during quiet breathing in wakefulness is actively controlled by simultaneously acting antagonistic intrinsic laryngeal muscles. In contrast, the return of the vocal cords toward the midline during expiration in stage 3-4 NREM sleep appears to be a passive phenomenon. (literal)

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