使用高分辨率光学连贯显微镜可视化相对耳运动
Scott Page1, Roozbeh Ghaffari1, Dennis M Freeman2
1Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA, USA.
Hearing research
|May 28, 2025
概括
研究人员使用多普勒光学连贯显微镜测量纳米级运动在gerbil尾. 他们揭示了在声学刺激过程中Corti结构的构造膜和器官之间的相对运动.
科学领域:
- 听觉神经科学 听觉神经科学
- 生物物理学的生物物理.
- 耳声波排放 耳声波排放 耳声波排放
背景情况:
- 了解耳机械对于听觉研究至关重要.
- 耳结构的相对运动仍然不太了解.
- 外皮毛细胞的电机性能已经得到了很好的研究,但它们在整体耳运动中的作用不太清楚.
研究的目的:
- 描述尾尾内绝对和相对运动的特征.
- 为了研究Corti.的构造膜和器官之间的机械合.
- 为了展示一种新的高分辨率运动分析在尾细胞的新技术.
主要方法:
- 使用一个定制的多普勒光学连贯显微镜 (DOCM) 系统.
- 切除的 gerbil 囊被 subjected 阴侧侧声学刺激.
- 分析了Corti结构的基底膜,构造膜和器官的纳米尺度运动.
主要成果:
- 观测到尾中纳米级运动,包括外发细胞和柱状细胞.
- 构造膜运动使底层细胞结构滞后高达0.1半径.
- 确定了围绕内部支柱细胞的几乎恒定的相位旋转.
结论:
- 多普勒光学连贯显微镜能够同时进行高分辨率成像和运动分析.
- 这项研究为耳元件的相对运动提供了新的见解.
- 这种技术有助于对耳反机制和机制的研究.
关键词:
尾虫是一种尾虫.片电影 片电影 片电影不同的运动运动差异.科赫利亚子 (Gerbil Cochlea) 是一种子.哺乳动物的尾虫.科尔蒂的器官动画相对运动的相对运动.频谱域是一个光谱域.时间域的时间域.更多相关视频
09:52Measurement of Strial Blood Flow in Mouse Cochlea Utilizing an Open Vessel-Window and Intravital Fluorescence Microscopy
Published on: September 21, 2021
2.6K
07:02Author Spotlight: Advancements in In Vivo and Ex Vivo Retinal Imaging for Improved Glaucoma Diagnosis and Treatment
Published on: June 30, 2023
1.7K
相关概念视频
Mechanism of Ciliary Motion
4.0K
The ciliary structures were first seen in 1647 by Antonie Leeuwenhoek while observing the protozoans. In lower organisms, these appendages are responsible for cell movement, while in higher organisms, these appendages help in the movement of the extracellular fluids within the body cavities.
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
4.0K
Imaging Biological Samples with Optical Microscopy
5.5K
Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
5.5K
Phase Contrast and Differential Interference Contrast Microscopy
9.9K
Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
9.9K
The Cochlea
46.1K
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.
46.1K
Hair 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
Relative Motion Analysis using Rotating Axes
549
Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame.
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
549
