Respiratory Sinus Arrhythmia and Parasympathetic Cardiac Control: Some Basic Issues Concerning Quantification, Applications and Implications

摘要: In recent years, increasing attention has been directed to the phenomenon of respiratory sinus arrhythmia (RSA) by physiologists and psychophysiologists (e.g. Fouad et al., 1984; Haddad Porges, McCabe Yongue, 1982; Zemaityte, Varoneckas Sokolov, 1984). This largely a consequence finding that RSA magnitude is sensitive index cardiac parasympathetic control under various conditions (first shown Katona Jih, 1975). An easily obtainable noninvasive measure specific neural influences upon heart likely generate much enthusiasm, debate discussion revolving around issues actual validity index, most appropriate parameter use for measure, physiological mechanisms precisely underlying phenomenon, potential research clinical application areas. The purpose present paper delve into these aspects as vagal not in terms comprehensive review issues, but rather an effort point out certain misunderstood overlooked