Effects of Changes in Breathing Pattern on the Sensation of Dyspnea during Inspiratory Loaded Breathing

摘要: The ventilatory responses to external resistive and elastic loadings of the respiratory system have been extensively studied in a variety experimental animals as well also humans. It has known that there are marked differences pattern breathing during sustained inspiratory between awake anesthetized subjects (Margaria et al., 1973; Cherniack Altose,1981; Milic-Emili Zin,1986). In loading generally leads increased frequency decreased tidal volume, whereas causes volume. By contrast changes small or absent independent type (Milic-Emili Zin, 1986). Because different cannot be explained simple reflex (Cherniack 1986), it is assumed conscious awareness behavioral response may responsible for observed loadings. However, nature control not yet evaluated. Thus, aim present study was examine hypothesis might optimized through cortical so sensation dyspnea would minimized.