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相关概念视频

Electron Behavior00:54

Electron Behavior

Electrons are negatively charged subatomic particles that are attracted to an orbit around the positively-charged nucleus of an atom. They reside in locations that are associated with energy levels called shells and are further organized into sub-shells and orbitals within each shell.Electrons Orbit the NucleusElectrons are found in specific locations outside of the nucleus. The shell in which an electron resides indicates the general energy level of the electron: those closer to the nucleus...
Fruit Development, Structure, and Function01:58

Fruit Development, Structure, and Function

Fruits form from a mature flower ovary. As seeds develop from the ovules contained within, the ovary wall undergoes a series of complex changes to form fruit. In some fruits, such as soybeans, the ovary wall dries; in other fruits, such as grapes, it remains fleshy. In some cases, organs other than the ovary contribute to fruit formation; such fruits are called accessory fruits.
Electron Behavior01:09

Electron Behavior

Electrons are negatively charged subatomic particles attracted to and orbit around the positively-charged nucleus of an atom. They reside in spaces associated with energy levels called shells and are further organized into subshells and orbitals within each shell.
Electrons Orbit the Nucleus
Electrons are found in specific locations outside of the nucleus. The shell in which an electron resides indicates the general energy level of the electron: those closer to the nucleus have less energy,...
Feedback control systems01:26

Feedback control systems

Feedback control systems are categorized in various ways based on their design, analysis, and signal types.
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...
Control System Problem01:21

Control System Problem

In an open-loop system, such as a basic thermostat, the poles of the transfer function influence the system's response but do not determine its stability. However, when feedback is introduced to form a closed-loop system, such as an advanced thermostat that adjusts heating based on room temperature, stability is governed by the new poles of the closed-loop transfer function.
When forming a closed-loop system, issues can arise if the poles cross into the unstable region, leading to potential...
Behavior Modification01:21

Behavior Modification

Behavioral approaches have often been criticized for ignoring mental processes and focusing solely on observable behavior. However, these approaches provide an optimistic perspective for individuals seeking to change their behaviors. Rather than concentrating on intrinsic personality traits, behavioral approaches suggest that even longstanding habits can be modified by changing the reward contingencies that maintain them.
A real-world application of operant conditioning principles is applied...

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相关实验视频

Updated: Jul 13, 2026

Optogenetic Stimulation of Escape Behavior in Drosophila melanogaster
08:03

Optogenetic Stimulation of Escape Behavior in Drosophila melanogaster

Published on: January 25, 2013

远程控制果的行为

Ronald L Davis1

  • 1Department of Molecular and Cellular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, Texas 77030, USA.

Cell
|April 12, 2005
PubMed
概括

科学家们开发了一种新的遥控系统,可以使用光激活特定的神经元. 这种方法可以精确控制清醒动物的神经回路,进步神经科学研究.

科学领域:

  • 神经科学是一个神经科学.
  • 视觉遗传学 视觉遗传学
  • 动物模型 动物模型

背景情况:

  • 研究神经回路需要精确的方法来激活在清醒,行为动物的特定神经元.
  • 传统的电刺激可能缺乏特异性,并引入文物.

研究的目的:

  • 介绍一种用于神经元激活的新的非侵入性方法.
  • 为了研究特定的神经元在行为和感知中的作用.

主要方法:

  • 利用光激活的,遗传编码的离子通道 (光遗传学).
  • 开发了一种遥控系统,用于精确的神经元激发.
  • 在清醒,有行为动物模型中应用了该技术.

主要成果:

  • 通过光来成功地远程激活特定的神经元.
  • 展示了引起感知和运动活动的潜力.
  • 建立了神经科学研究的新范式.

结论:

  • 光激活的离子通道为电刺激提供了一个强大的替代方案.
  • 这种光遗传学方法可以在自然条件下研究神经回路.

更多相关视频

Tracking Drosophila Larval Behavior in Response to Optogenetic Stimulation of Olfactory Neurons
06:49

Tracking Drosophila Larval Behavior in Response to Optogenetic Stimulation of Olfactory Neurons

Published on: March 21, 2018

Behavioral Assays for Optogenetic Manipulation of Neural Circuits in Drosophila melanogaster
07:39

Behavioral Assays for Optogenetic Manipulation of Neural Circuits in Drosophila melanogaster

Published on: February 7, 2025

相关实验视频

Last Updated: Jul 13, 2026

Optogenetic Stimulation of Escape Behavior in Drosophila melanogaster
08:03

Optogenetic Stimulation of Escape Behavior in Drosophila melanogaster

Published on: January 25, 2013

Tracking Drosophila Larval Behavior in Response to Optogenetic Stimulation of Olfactory Neurons
06:49

Tracking Drosophila Larval Behavior in Response to Optogenetic Stimulation of Olfactory Neurons

Published on: March 21, 2018

Behavioral Assays for Optogenetic Manipulation of Neural Circuits in Drosophila melanogaster
07:39

Behavioral Assays for Optogenetic Manipulation of Neural Circuits in Drosophila melanogaster

Published on: February 7, 2025

  • 这项技术提升了我们将神经活动与行为联系起来的能力.