相关实验视频
Updated: Jul 14, 2025

11:22
Vibratome Sectioning Mouse Retina to Prepare Photoreceptor Cultures
Published on: December 22, 2014
17.8K
一个视网形神经元用于人工视觉和虹膜适应
Lin Sun1,2, Shangda Qu1,2, Wentao Xu1,2
1Institute of Photoelectronic Thin Film Devices and Technology, Key Laboratory of Optoelectronic Thin Film Devices and Technology of Tianjin, College of Electrical Information and Optical Engineering, Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education, Smart Sensing Interdisciplinary Science Center, Nankai University, Tianjin 300350, China. wentao@nankai.edu.cn.
Materials horizons
|October 9, 2023
概括
研究人员使用神经形态光感受器开发了一种新的人工虹膜系统. 这种仿生设备模仿人类眼睛.
科学领域:
- 生物仿真工程 生物仿真工程
- 神经形态计算是一种神经形态计算.
- 人工视觉是一种人工视觉.
背景情况:
- 人类虹膜动态调整到视网膜的光水平.
- 现有的人工虹膜和光受体缺乏生物神经处理.
- 模仿视网膜神经元功能是先进的人工视觉的关键.
研究的目的:
- 开发一个用于人工视觉和虹膜适应的视网形神经元系统.
- 创建一个模仿生物光传感和信号传导的设备.
- 为了证明生物模拟的瞳孔光反射.
主要方法:
- 使用基于金纳米粒子装饰的ITO纤维的神经形态光受体.
- 集成了一种用于光过的电色装置和一个尖峰生成单元.
- 杆光调节的突触可塑性和等离子体增强的光吸收反.
主要成果:
- 该系统提供实时光强度反.
- 更高的光强度会触发更高频率的电刺激.
- 该设备成功地驱动了一种用于光调节的电色波器,模仿瞳孔反射.
结论:
- 这项研究介绍了第一个人工视网膜神经元,它具有用于人工虹膜视力的神经形光受体.
- 该设计整合了神经通路和神经模拟器件,以增强生物模拟.
- 潜在的应用包括仿生工程,智能交互和视觉假肢.
相关概念视频
The Retina
69.2K
The retina is a layer of nervous tissue at the back of the eye that transduces light into neural signals. This process, called phototransduction, is carried out by rod and cone photoreceptor cells in the back of the retina.
69.2K
Anatomy of the Eyeball
7.2K
The eye is a spherical, hollow structure composed of three tissue layers. The outer layer — the fibrous tunic, comprises the sclera — a white structure — and the cornea, which is transparent. The sclera encompasses some of the ocular surface, most of which is not visible. However, the 'white of the eye' is distinctively visible in humans compared to other species. The cornea, a clear covering at the front of the eye, enables light penetration. The eye's middle...
7.2K
Vision
53.5K
Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
53.5K
Visual System
607
Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
Once through the pupil, the light passes through the lens, a...
Once through the pupil, the light passes through the lens, a...
607
Photoreceptors and Visual Pathways
6.1K
At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
6.1K

