概括
胎儿的眼睛运动可以使用超声波从怀孕16周可视化. 快速眼动在24-35周之间达到顶峰,在怀孕后期的安静睡眠期间过渡到不活动.
科学领域:
- 产科和妇科 产科和妇科
- 胎儿发育 胎儿发育 胎儿发育
- 神经科学是一个神经科学.
背景情况:
- 胎儿的眼睛运动是神经发育的一个关键指标.
- 超声波提供了一种非侵入性的方法来观察胎儿的行为.
研究的目的:
- 用超声波来描述胎儿眼睛运动的发展和模式.
- 为了将观察到的眼动模式与妊娠年龄和睡眠状态相关联.
主要方法:
- 在90%的16-42周的胎儿中,胎儿眼睛的超声波可视化.
- 观察和量化胎儿眼睛运动类型 (缓慢,快速,不活跃).
- 眼睛运动模式与妊娠年龄和隔膜活动的相关性.
主要成果:
- 缓慢的眼动可以在怀孕16周时被检测出来.
- 快速眼动在23周出现,在24-35周之间频率达到顶峰.
- 36周后,眼睛不活动增加,与"安静的睡眠"相关,由隔膜外游表示.
- 在四个患有脑结构异常的胎儿身上发现了病态的眼动.
结论:
- 胎儿的眼睛运动模式随着妊娠年龄的增长而可预测地演变.
- 超声波是有效的评估胎儿的眼睛活动和睡眠状态.
- 异常的眼动可能表明胎儿大脑发育的潜在问题.
相关概念视频
01:20Muscles of the Eye
The muscles of the eye are sophisticated structures that control eye movement and focus, allowing for the precise and rapid adjustments necessary for vision. The human eye is controlled by ten muscles — six extraocular muscles, three intraocular muscles, and one primary eyelid retractor muscle.
Extraocular Muscles
The six extraocular muscles surround the eyeball and control its movements. They are responsible for a wide range of eye motions, including looking up, down, left, right, and rotating...
Extraocular Muscles
The six extraocular muscles surround the eyeball and control its movements. They are responsible for a wide range of eye motions, including looking up, down, left, right, and rotating...
01:17Accessory Structures of the Eye
Optical perception, or vision, is an extraordinary sense dependent on converting light signals received via the ocular organs. These organs, known as eyes, are securely positioned within the bony cavities of the skull, called orbits. The orbits serve a dual purpose: a protective shield for the ocular globes and a stable attachment point for the soft ocular tissues. The eye's external protective mechanisms include the eyelids, which are edged with lashes that act as a barrier against foreign...