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相关概念视频

Physical Pendulum01:06

Physical Pendulum

1.9K
When a rigid body is hanging freely from a fixed pivot point and is displaced, it oscillates similar to a simple pendulum and is known as a physical pendulum. The period and angular frequency of a physical pendulum are obtained by using the small-angle approximation and drawing parallels with a spring-mass system. The small-angle approximation (sinθ=θ) is valid up to about 14°.
When dealing with complicated systems, the mass moment of inertia is an important parameter, as it...
1.9K
Simple Pendulum01:10

Simple Pendulum

5.0K
A simple pendulum consists of a small diameter ball suspended from a string, which has negligible mass but is strong enough to not stretch. In our daily life, pendulums have many uses, such as in clocks, on a swing set, and on a sinker on a fishing line. 
The period of a simple pendulum depends on two factors: its length and the acceleration due to gravity. The period is completely independent of any other factors, such as mass or maximum displacement. For small displacements, a pendulum...
5.0K
Torsional Pendulum01:09

Torsional Pendulum

6.0K
A torsional pendulum involves the oscillation of a rigid body in which the restoring force is provided by the torsion in the string from which the rigid body is suspended. Ideally, the string should be massless; practically, its mass is much smaller than the rigid body's mass and is neglected.
As long as the rigid body's angular displacement is small, its oscillation can be modeled as a linear angular oscillation. The amplitude of the oscillation is an angle. The role of mass is played...
6.0K
Magnetic Force Between Two Parallel Currents01:13

Magnetic Force Between Two Parallel Currents

3.7K
Two long, straight, and parallel current-carrying conductors exert a force of equal magnitude on one another. The direction of the force depends on the current direction in the conductors.
The force exerted by the magnetic field due to the first conductor over a finite length of the second conductor is given as the product of the current in the second conductor and  the vector product of the length vector along the current element and the field due to the first conductor. According to the...
3.7K
Forced Oscillations01:06

Forced Oscillations

6.8K
When an oscillator is forced with a periodic driving force, the motion may seem chaotic. The motions of such oscillators are known as transients. After the transients die out, the oscillator reaches a steady state, where the motion is periodic, and the displacement is determined.
6.8K
Magnetic Force On Current-Carrying Wires: Example01:22

Magnetic Force On Current-Carrying Wires: Example

1.6K
In a magnetic field, moving charges encounter a force. If a wire contains these moving charges, i.e., if the wire is carrying a current, then a force acts on the wire as well. Consider a pair of flexible leads holding a wire that is 40 cm long and 10 g in weight in a horizontal position. The wire is placed in a constant magnetic field of 0.40 T, as shown in Figure 1(a). Determine the magnitude and direction of the current flowing in the wire needed to remove the tension in the supporting leads.
1.6K

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相关实验视频

Updated: Sep 17, 2025

Dorsal Column Steerability with Dual Parallel Leads using Dedicated Power Sources: A Computational Model
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Dorsal Column Steerability with Dual Parallel Leads using Dedicated Power Sources: A Computational Model

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交替的Cav3.2电流传导着爱的摆形

Zheyi Ni1, Hailan Hu1

  • 1School of Brain Science and Brain Medicine, New Cornerstone Science Laboratory, Zhejiang University School of Medicine, Hangzhou, China.

Cell
|June 27, 2025
PubMed
概括
此摘要是机器生成的。

女性的生殖周期调节社会和性行为. 研究人员发现Cav3.2通道在前额皮质中起着激素调节的作用, 将激素状况与大脑活动联系起来, 促进性行为.

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Isolating and Culturing Vestibular and Spiral Ganglion Somata from Neonatal Rodents for Patch-Clamp Recordings
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Optocardiography and Electrophysiology Studies of Ex Vivo Langendorff-perfused Hearts
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Optocardiography and Electrophysiology Studies of Ex Vivo Langendorff-perfused Hearts

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相关实验视频

Last Updated: Sep 17, 2025

Dorsal Column Steerability with Dual Parallel Leads using Dedicated Power Sources: A Computational Model
11:19

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Isolating and Culturing Vestibular and Spiral Ganglion Somata from Neonatal Rodents for Patch-Clamp Recordings
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Optocardiography and Electrophysiology Studies of Ex Vivo Langendorff-perfused Hearts
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科学领域:

  • 神经科学
  • 内分泌学
  • 行为生物学

背景情况:

  • 女性的生殖周期对社会和性行为产生重大影响.
  • 众所周知,生殖周期中的荷尔蒙波动会影响神经活动.
  • 了解荷尔蒙与行为相关的分子机制至关重要.

研究的目的:

  • 研究特定离子通道对生殖激素对大脑功能影响的作用.
  • 确定女性生殖期处理社会和性线索的神经通路.
  • 解释如何将荷尔蒙状态转化为行为输出.

主要方法:

  • 在前额叶皮层的电生理记录.
  • 通道表达和功能的分析.
  • 行为评估评估女性的社会和性反应.
  • 激素水平的监测和操纵.

主要成果:

  • 在前额叶皮层的Cav3.2通道被确定为关键参与者.
  • 通过生殖激素调节的电生理开关.
  • 这条通道将荷尔蒙状态与神经活动联系起来, 促进男性信号的处理.
  • 在生殖阶段,Cav3.2的激活对性行为至关重要.

结论:

  • 通道Cav3.2是女性荷尔蒙状况与性行为之间的关键分子联系.
  • 在前额叶皮层中,Cav3.2 作为激素调节的开关,将内分泌信号与神经回路结合起来.
  • 这些发现为激素驱动行为的神经生物学基础提供了新的见解.