van Woerden E E, van Geijn H P, Caron F J, van der Valk A W, Swartjes J M, Arts N F
Department of Obstetrics and Gynecology, Academisch Ziekenhuis Vrije Universiteit, Amsterdam, The Netherlands.
Eur J Obstet Gynecol Reprod Biol. 1988 Oct;29(2):97-105. doi: 10.1016/0028-2243(88)90135-9.
The aim of this study was to investigate the characteristics of mouth movements during behavioural states 1F (quiet sleep) and 2F (active sleep) in the near term human fetus. Thirty-six women participated. Fetal heart rate and fetal movements were recorded for 2 hours continuously. Videotapes with enclosed periods 1F and 2F were replayed to record fetal mouth movements in detail. During 1F, regular mouthing movements dominated (present in 74%), while jaw opening, yawn and grimace were only observed in 5 to 16% of the recordings. Tongue protrusion was not observed in 1F. In all 2F periods jaw opening was present (100%), while tongue protrusion, yawn and grimace were also frequently observed. Regular mouthing was observed in 2F in only two fetuses. For regular mouthing and sucking, onset-to-onset intervals of clusters, cluster duration, and number and frequency of movements within clusters were calculated. In all aspects the differences between these two types of movement were statistically significant. Within the clusters of regular mouthing a decline in the mouthing frequency was found. The data on fetal regular mouthing correspond with observations in the neonate.
本研究旨在调查近足月胎儿在行为状态1F（安静睡眠）和2F（活跃睡眠）期间的口部运动特征。36名女性参与了研究。连续2小时记录胎儿心率和胎动。回放包含1F和2F时段的录像带，以详细记录胎儿的口部运动。在1F期间，规律性的口部运动占主导（74%出现），而张口、打哈欠和鬼脸仅在5%至16%的记录中观察到。在1F期间未观察到伸舌。在所有2F时段均出现张口（100%），同时伸舌、打哈欠和鬼脸也经常被观察到。仅在两个胎儿的2F期间观察到规律性的口部运动。对于规律性的口部运动和吸吮，计算了群组的起始到起始间隔、群组持续时间以及群组内运动的数量和频率。在所有方面，这两种运动类型之间的差异具有统计学意义。在规律性口部运动的群组中发现口部运动频率下降。胎儿规律性口部运动的数据与新生儿的观察结果相符。
