Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Mismatch Repair01:20

Mismatch Repair

6.3K
Organisms are capable of detecting and fixing nucleotide mismatches that occur during DNA replication. This sophisticated process requires identifying the new strand and replacing the erroneous bases with correct nucleotides. Mismatch repair is coordinated by many proteins in both prokaryotes and eukaryotes.
The Mutator Protein Family Plays a Key Role in DNA Mismatch Repair
The human genome has more than 3 billion base pairs of DNA per cell. Prior to cell division, that vast amount of genetic...
6.3K
Mismatch Repair01:36

Mismatch Repair

43.5K
Overview
43.5K
Conservative Site-specific Recombination and Phase Variation02:53

Conservative Site-specific Recombination and Phase Variation

6.6K
Because the DNA segments are cut and reorganized in a direction-specific manner, site-specific recombination has emerged as an efficient genetic engineering technique. Flippase and Cyclization recombinases or Flp and Cre, respectively, are two members of the tyrosine recombinase family derived from bacteriophages, that are used to mediate site-specific DNA insertions, deletions, and targeted expression of proteins in mammalian cell lines.
The recognition sites for Cre recombinase called LoxP...
6.6K
Overview of Transposition and Recombination02:13

Overview of Transposition and Recombination

18.7K
Transposons make up a significant part of genomes of various organisms. Therefore, it is believed that transposition played a major evolutionary role in speciation by changing genome sizes and modifying gene expression patterns. For example, in bacteria, transposition can lead to conferring antibiotic resistance. Movement of transposable elements within the genetic pool of pathogenic bacteria can aid in transfer of antibiotic-resistant genetic elements. In eukaryotes, transposons can carry out...
18.7K
Position and Displacement01:31

Position and Displacement

24.4K
The position of an object defines its location relative to a convenient frame of reference at any particular time. A frame of reference is an arbitrary set of axes from which the position and motion of an object are described. Earth is often used as a frame of reference, and we often describe the position of an object as it relates to stationary objects on Earth. For example, a rocket launch could be described in terms of the position of the rocket with respect to Earth as a whole. On the other...
24.4K
Mutation, Gene Flow, and Genetic Drift01:09

Mutation, Gene Flow, and Genetic Drift

61.7K
In a population that is not at Hardy-Weinberg equilibrium, the frequency of alleles changes over time. Therefore, any deviations from the five conditions of Hardy-Weinberg equilibrium can alter the genetic variation of a given population. Conditions that change the genetic variability of a population include mutations, natural selection, non-random mating, gene flow, and genetic drift (small population size).
61.7K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Pretending Not to Know Reveals a Capacity for Model-Based Self-Simulation.

Psychological science·2026
Same author

Part-whole effects in visual number estimation.

Attention, perception & psychophysics·2026
Same author

Visual field asymmetries develop throughout adolescence.

iScience·2025
Same author

Knowledge for two<b>When Everyone Knows That Everyone Knows…</b> <i>Steven Pinker</i> Scribner, 2025. 384 pp.

Science (New York, N.Y.)·2025
Same author

The psychophysics of compositionality: Relational scene perception occurs in a canonical order.

Cognitive psychology·2025
Same author

Visual anagrams reveal high-level effects with 'identical' stimuli.

Current biology : CB·2025
Same journal

Increased rates of hybridization in swordtails are associated with water pollution.

Current biology : CB·2026
Same journal

Visual uncertainty and task demands shape active sensing strategies in mice.

Current biology : CB·2026
Same journal

An adaptable, self-organizing, single-cell morphology circuit optimizes suctorian predatory trap structure.

Current biology : CB·2026
Same journal

Temporal tuning of switch-like virulence expression resolves environmental uncertainty through phenotypic heterogeneity.

Current biology : CB·2026
Same journal

An abstract relational map emerges in the human medial prefrontal cortex with consolidation.

Current biology : CB·2026
Same journal

Phloem evolved gradually and asynchronously to xylem in early vascular plants.

Current biology : CB·2026
查看所有相关文章

相关实验视频

Updated: Jan 11, 2026

The Spatial Memory Game: Testing the Relationship Between Spatial Language, Object Knowledge, and Spatial Cognition
05:15

The Spatial Memory Game: Testing the Relationship Between Spatial Language, Object Knowledge, and Spatial Cognition

Published on: February 19, 2018

11.3K

数字适应可以在空间变化中生存下来.

Caroline Myers1, Chaz Firestone1, Justin Halberda1

  • 1Department of Psychological and Brain Sciences, Johns Hopkins University, Ames Hall, 3400 N. Charles St., Baltimore, MD 21218, USA.

Current biology : CB
|November 14, 2025
PubMed
概括
此摘要是机器生成的。

数字适应效应是对象特定的,可以与移动的物体结合在一起,与早期的视觉特征适应不同. 这表明,在更高的视觉区域,如内突 (IPS),进行非视网膜处理.

关键词:
适应 适应 适应 适应运动运动运动运动运动.人数感知 人数感知视觉物体是视觉物体.

更多相关视频

Monitoring Spatial Segregation in Surface Colonizing Microbial Populations
07:40

Monitoring Spatial Segregation in Surface Colonizing Microbial Populations

Published on: October 29, 2016

11.5K
A Method to Study Adaptation to Left-Right Reversed Audition
07:14

A Method to Study Adaptation to Left-Right Reversed Audition

Published on: October 29, 2018

6.8K

相关实验视频

Last Updated: Jan 11, 2026

The Spatial Memory Game: Testing the Relationship Between Spatial Language, Object Knowledge, and Spatial Cognition
05:15

The Spatial Memory Game: Testing the Relationship Between Spatial Language, Object Knowledge, and Spatial Cognition

Published on: February 19, 2018

11.3K
Monitoring Spatial Segregation in Surface Colonizing Microbial Populations
07:40

Monitoring Spatial Segregation in Surface Colonizing Microbial Populations

Published on: October 29, 2016

11.5K
A Method to Study Adaptation to Left-Right Reversed Audition
07:14

A Method to Study Adaptation to Left-Right Reversed Audition

Published on: October 29, 2018

6.8K

科学领域:

  • 认知神经科学 认知神经科学
  • 视觉感知 视觉感知 视觉感知
  • 计算神经科学是一种神经科学.

背景情况:

  • 规范视觉适应效应 (颜色,定向) 是空间特定的,与早期视网膜类视觉区域相关.
  • 数字适应效应局部存在于内突 (IPS),这是一个参与物体跟踪的更高层次区域.
  • 这种对比表明,数量适应可能会显示出非视网膜学效应.

研究的目的:

  • 调查数字适应效应是否在空间位置变化的条件下持续存在.
  • 要确定数量适应是视网膜或基于对象的.
  • 探索数字适应对象的绑定,即使它们在移动.

主要方法:

  • 六项实验测量了数字的适应性,使用在可见或不可见磁盘中呈现的点.
  • 刺激包括静止和移动的点,空间位置不断变化.
  • 通过比较对适应和测试刺激的反应来测量适应.

主要成果:

  • 观察到对象特定的数字适应,即使在不断的空间重新排列的情况下也会持续存在.
  • 适应与特定的对象或边界区域有关,而不是转移到其他对象.
  • 适应效应的大小对于移动和静态刺激是相似的.

结论:

  • 数字适应不是视网膜的,与早期视觉特征的适应不同.
  • 数字的适应效应可以与移动的对象结合在一起,表明在更高的视觉区域的基于对象的处理.
  • 这些发现支持IPS在以对象为中心或非视网膜类参考框架中表示数量的作用.