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Titolo:
PERCEPTUAL CONTRIBUTIONS TO OPTIMIZATION OF BREATHING
Autore:
OKU Y; SAIDEL GM; ALTOSE MD; CHERNIACK NS;
Indirizzi:
CASE WESTERN RESERVE UNIV,SCH MED,DEPT MED,DEANS OFF CLEVELAND OH 44106 CASE WESTERN RESERVE UNIV,SCH MED,DEPT MED,DEANS OFF CLEVELAND OH 44106 CASE WESTERN RESERVE UNIV,DEPT BIOMED ENGN CLEVELAND OH 44106
Titolo Testata:
Annals of biomedical engineering
fascicolo: 5, volume: 21, anno: 1993,
pagine: 509 - 515
SICI:
0090-6964(1993)21:5<509:PCTOOB>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
NEURAL CIRCUITS; HYPERCAPNIA; EXERCISE; SENSATION; BREATHLESSNESS; RESISTANCE; DYSPNEA; MODEL; SLEEP; CATS;
Keywords:
VENTILATORY CONTROL; DYSPNEA; OPTIMAL CONTROL; REFLEX CONTROL; AUTOMATIC CONTROL; BEHAVIORAL CONTROL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
33
Recensione:
Indirizzi per estratti:
Citazione:
Y. Oku et al., "PERCEPTUAL CONTRIBUTIONS TO OPTIMIZATION OF BREATHING", Annals of biomedical engineering, 21(5), 1993, pp. 509-515

Abstract

Besides regulating the energetic cost of breathing, optimization of breathing may involve the alleviation of an uncomfortable breathing sensation. In this article, we consider perceptual contributions to the optimization of breathing. Just as the cost function proposed by Poon depends on ventilation and arterial Pco, so does the sense of dyspnea. Consequently, we examined the relationship between breathing discomfort and Poon's cost function. Based on our model and psychophysical studies, it appears that breathing discomfort, which can integrate chemical and mechanical inputs to the respiratory controller, may not operatesimply as an estimate of a cost function. We explain how our reflex control model can dynamically minimize a cost function such as Poon's. Also, we consider the influence of willful adjustments of ventilation on breathing discomfort. From this we infer that ventilatory optimization may emerge from automatic reflexes and behavioral responses that involve excitatory chemical and inhibitory neuromechanical feedbacks.

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Documento generato il 23/01/20 alle ore 06:21:03