毛囊架构和功能上不同的老鼠振动细胞的内化
Ben Gerhardt1,2, Tobias Rodde1, Jette Alfken3
1Bernstein Center for Computational Neuroscience, Humboldt-Universität zu Berlin, Berlin, Germany.
Communications biology
|July 2, 2025
概括
鼠的毛囊会振动,使毛囊振动.
科学领域:
- 神经科学是一个神经科学.
- 感官生物学 感官生物学
- 生物物理学的生物物理.
背景情况:
- 振动毛囊是一种复杂的机械传感器.
- 了解 afferent 类型和辅助结构对于感官信息处理至关重要.
- 关于vibrissa功能及其组件的准确信息往往缺乏.
研究的目的:
- 对于具有不同功能的老鼠振动体的辅助结构和 afferent 内置的特征.
- 研究vibrissa毛囊架构与感官功能之间的关系.
- 要确定环wulst和相关的 afferents 是否形成一个非可扩展的感觉模块.
主要方法:
- 在老鼠的vibrissa毛囊的同步射线X射线成像.
- 辅助结构的表征 (振动,环,环).
- 从多种vibrissa类型 (C2,微型,上轨道,三角形) 追踪髓性轴突.
主要成果:
- 振动体的长度和卵泡的大小各不相同,但环状和俱乐部状的接体保持恒定的直径和高度,表明一个不可扩展的模块.
- 较长的振动体 (上轨道,C2) 有更多的球杆状 afferents,表明在检测较小的偏移中发挥了作用.
- 三叉的振动表现出很少的,后极分化的 afferents,这表明专门感知前向自我运动.
结论:
- 对vibrissa毛囊的高分辨率结构分析揭示了结构和功能之间的联系.
- 在不同的vibrissa类型中,Ringwulst似乎是一个保留的感觉模块.
- 特定的vibrissa类型表现出独特的结构适应,用于专门的感官任务.
相关概念视频
01:16Accessory Structures of the Skin: Hair and Hair Follicles
2.7K
Hair and hair follicles are integral components of the integumentary system. Hair is a filamentous structure composed mainly of a protein called keratin. It is found on the surface of the skin throughout the body, except for areas such as the palms of the hands and soles of the feet.
Hair is a keratinous filament growing out of the epidermis. It is primarily made of dead, keratinized cells. Hair strands originate at the epidermal penetration called the hair follicle. The hair shaft is the part...
Hair is a keratinous filament growing out of the epidermis. It is primarily made of dead, keratinized cells. Hair strands originate at the epidermal penetration called the hair follicle. The hair shaft is the part...
2.7K
01:22Hair Cells
41.4K
Hair cells are the sensory receptors of the auditory system—they transduce mechanical sound waves into electrical energy that the nervous system can understand. Hair cells are located in the organ of Corti within the cochlea of the inner ear, between the basilar and tectorial membranes. The actual sensory receptors are called inner hair cells. The outer hair cells serve other functions, such as sound amplification in the cochlea, and are not discussed in detail here.
41.4K
01:13The Cochlea
46.0K
The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
46.0K
01:03Olfactory Receptors: Location and Structure
9.7K
The process of olfaction, also known as the sense of smell, is a sophisticated chemical response system. The specialized sensory neurons that facilitate this process, known as olfactory receptor neurons, are situated in an upper segment of the nasal cavity, known as the olfactory epithelium. Olfactory sensory neurons are bipolar, with their dendrites extending from the epithelium's apex into the mucus that lines the nasal cavity. Airborne molecules, when inhaled, traverse the olfactory...
9.7K