胎儿打哈欠和口腔开口:频率,发育趋势,以及与出生体重的关联
Damiano Menin1, Paola Veronese2, Maria Teresa Gervasi2
1Dipartimento di Studi Umanistici, Università degli Studi di Ferrara, Ferrara, Italy.
PloS one
|February 25, 2026
概括
胎儿打哈欠很少发生,与妊娠年龄无关. 胎儿的打哈欠频率可能会随着出生体重的增加而减少,这表明可能存在与压力相关的调节.
科学领域:
- 神经科学是一个神经科学.
- 发展生物学 发展生物学
- 灵长类动物学 灵长类动物学
背景情况:
- 大脑冷却假设是哈欠的进化起源的主要理论.
- 然而,胎儿的打哈欠对这一假设提出了挑战,因为胎儿依赖于母亲的温度调节.
- 关于胎儿打哈欠的先前研究受限于方法问题,导致不一致的发现.
研究的目的:
- 研究人类胎儿打哈欠的频率和发育趋势.
- 评估胎儿打哈欠和妊娠年龄之间的关系.
- 探索胎儿打哈欠的潜在调节因子,例如出生体重.
主要方法:
- 利用超声波扫描来观察23到31个妊娠周之间的32个健康胎儿.
- 采用基于婴儿FACS的围产期行为编码系统 (SCPB) 来评分打哈欠和其他口腔开口.
- 分析了与妊娠年龄和出生体重相关的打哈欠频率.
主要成果:
- 平均打哈欠频率很低 (每小时低于5),与妊娠年龄没有显著关系.
- 不打哈欠的口腔开口随着妊娠年龄的增加而减少.
- 打哈欠的频率与出生体重有负相关性,这表明可能与轻度胎儿痛苦有关.
结论:
- 胎儿打哈欠是一种罕见的行为,其频率与妊娠年龄没有显著变化.
- 之前研究的方法限制可能解释了先前观察到的胎儿打的发育趋势.
- 健康胎儿的打哈欠行为可能是由压力指标 (如出生体重) 调节的.
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