著者对肛门直肠控制反应的发育进行了一系列的研究。在62例新生儿和6例早产儿中作了138次电压力计测量记录。其中45例婴儿作了系统的观察。发现11%的婴儿生后第一天可见到肛门内括约肌有正常的松弛反应。约50%的婴儿生后第三天才见到这种反应。直到生后第十二 The authors conducted a series of studies on the development of anorectal control responses. In 62 newborns and 6 premature infants made 138 times the electrical pressure measurement records. Among them, 45 infants were systematically observed. Found that 11% of infants on the first day after birth can see the anal sphincter has a normal relaxation reaction. About 50% of infants on the third day after birth to see this response. Twelve until after birth