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相关概念视频

Neural Circuits01:25

Neural Circuits

1.3K
Neural circuits and neuronal pools are two of the main structures found in the nervous system. Neural circuits are networks of neurons that work together to carry out a specific task or process. They consist of interconnected neurons and glial cells, which provide structural and metabolic support.
Neuronal pools are collections of nerve cells with similar functions and interact through chemical and electrical signals. These pools include both interneurons (the central neural circuit nodes that...
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Vision01:24

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.
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Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

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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,...
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Neuroplasticity01:01

Neuroplasticity

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Neuroplasticity reflects the brain's remarkable capacity to adapt and evolve, responding dynamically to learning, experiences, or injury by reorganizing its neural circuitry. This reorganization involves creating new neural connections and refining old ones through a series of biological processes that contribute to the brain's lifelong development and adaptability.
377
Visual System01:26

Visual System

594
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...
594
Light Acquisition02:16

Light Acquisition

8.5K
In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
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相关实验视频

Updated: Jul 12, 2025

Photodiode-Based Optical Imaging for Recording Network Dynamics with Single-Neuron Resolution in Non-Transgenic Invertebrates
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Photodiode-Based Optical Imaging for Recording Network Dynamics with Single-Neuron Resolution in Non-Transgenic Invertebrates

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事件驱动的自适应光学神经网络.

Frank Brückerhoff-Plückelmann1, Ivonne Bente1, Marlon Becker2

  • 1Physical Institute, University of Münster, Heisenbergstraße 11, 48149 Münster, Germany.

Science advances
|October 20, 2023
PubMed
概括
此摘要是机器生成的。

这项研究介绍了一种具有可重新配置结构和非易失性记忆的自适应光学神经网络. 可扩展的光子架构展示了先进的人工智能硬件的潜力.

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Automated Multimodal Stimulation and Simultaneous Neuronal Recording from Multiple Small Organisms
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Automated Multimodal Stimulation and Simultaneous Neuronal Recording from Multiple Small Organisms

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Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss
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Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss

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相关实验视频

Last Updated: Jul 12, 2025

Photodiode-Based Optical Imaging for Recording Network Dynamics with Single-Neuron Resolution in Non-Transgenic Invertebrates
10:18

Photodiode-Based Optical Imaging for Recording Network Dynamics with Single-Neuron Resolution in Non-Transgenic Invertebrates

Published on: July 9, 2020

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Automated Multimodal Stimulation and Simultaneous Neuronal Recording from Multiple Small Organisms
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Automated Multimodal Stimulation and Simultaneous Neuronal Recording from Multiple Small Organisms

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Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss
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Published on: April 11, 2025

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科学领域:

  • 光子学 是一个光子学.
  • 人工智能的人工智能
  • 神经形态计算是一种神经形态计算.

背景情况:

  • 光学神经网络提供高速计算,但往往缺乏适应性.
  • 现有的架构在动态重新配置和非易失性内存集成方面扎.

研究的目的:

  • 开发一个具有结构可塑性的大规模,自适应的光学神经网络.
  • 使用相变材料实现非易失性内存和非线性激活功能.

主要方法:

  • 使用波长可定位的人工神经元与嵌入式相变材料.
  • 采用多模式聚焦,以激发和抑制反应的激活功能.
  • 使用进化算法训练网络来分类文本样本.

主要成果:

  • 在激活函数中显示了3.2分贝的可逆切换对比度.
  • 成功训练了一个由736个子网络 (8398个功能神经元) 组成的网络,以区分英语和德语文本.
  • 在培训过程中研究了突触和结构性可塑性.

结论:

  • 拟议的自适应光学神经网络架构是可扩展的,并显示出高级AI应用的巨大潜力.
  • 在光子系统中整合结构可塑性和非挥发性内存是可行的.
  • 事件驱动架构与相变材料相结合,为下一代神经形态计算提供了一个有希望的途径.