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

Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

548
Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.
548
Visual System01:26

Visual System

501
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...
501
Anatomy of the Eyeball01:20

Anatomy of the Eyeball

5.9K
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...
5.9K
Vision01:24

Vision

52.9K
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.
52.9K
Perceptual Constancy01:12

Perceptual Constancy

348
Perceptual constancy is the ability to recognize that objects remain consistent and unchanged even when their appearance varies due to changes in sensory input. There are four main types of perceptual constancy: size constancy, shape constancy, color constancy, and brightness constancy.
Size constancy is the recognition that an object remains the same size, even when its image on the retina changes. For instance, a bus is perceived to be large enough to carry people, even if it looks tiny from...
348
Curvilinear Motion: Normal and Tangential Components01:27

Curvilinear Motion: Normal and Tangential Components

380
When a car traverses a curved road, its motion can be elucidated by breaking it down into tangential and normal components. The car-centric coordinates attached to the vehicle move with it.
The positive direction of the t-axis aligns with the increasing position of the car along the curved path, denoted by the unit vector ut. Simultaneously, the n-axis, perpendicular to the t-axis, dissects the curved path into differential arc segments, each forming the arc of a circle with a radius of...
380

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

Cortex-specific inversion of visual responses during sleep.

Nature communications·2026
Same author

Normalization accounts for temporal dynamics in human somatosensory cortex.

bioRxiv : the preprint server for biology·2026
Same author

Cortex-specific inversion of visual responses during sleep.

bioRxiv : the preprint server for biology·2026
Same author

Spatial Frequency Tuning Follows Scale Invariance in the Human Visual Cortex.

The Journal of neuroscience : the official journal of the Society for Neuroscience·2026
Same author

Dynamic estimation of the attentional field from visual cortical activity.

eLife·2025
Same author

Attention Alters Population Spatial Frequency Tuning.

The Journal of neuroscience : the official journal of the Society for Neuroscience·2025
Same journal

Targeting intracranial electrical stimulation to network regions defined within individuals causes network-level effects.

Journal of neurophysiology·2026
Same journal

When "Noise" Isn't Simply Noise: Deterministic Postural Drive During Noisy Galvanic Vestibular Stimulation (nGVS).

Journal of neurophysiology·2026
Same journal

Abrupt Scene Onsets and Gradually Emerging Scene Information Produce Distinct EEG Decoding Dynamics.

Journal of neurophysiology·2026
Same journal

From discovery to translation: charting a course for the <i>Journal of Neurophysiology</i>.

Journal of neurophysiology·2026
Same journal

Neuromodulatory Strategies Overcome Multiple Inevitable Impairments of Cerebral Palsy.

Journal of neurophysiology·2026
Same journal

Acute Fentanyl Toxicity:From Opioid-Induced to Hypoxia-Mediated Pathophysiology.

Journal of neurophysiology·2026
查看所有相关文章

相关实验视频

Updated: Jun 3, 2025

Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition
07:45

Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition

Published on: July 21, 2020

4.4K

定向调整的正常化如何在视野中传播?

Michaela Klímová1,2,3, Ilona M Bloem4, Sam Ling1,2

  • 1Department of Psychological and Brain Sciences, Boston University, Boston, Massachusetts, United States.

Journal of neurophysiology
|January 8, 2025
PubMed
概括
此摘要是机器生成的。

增益控制机制调节视觉皮层的反应. 这项研究发现,当刺激是直线的时,定向调整的环境抑制更强,影响早期视觉区域的神经反应.

关键词:
对比反应函数对比反应函数划分性规范化的划分性规范化功能磁力共振成像 (fMRI) 是一种功能共振成像.围绕压制的压制包围视觉 视觉 视觉 视觉 是一个

更多相关视频

Three Dimensional Vestibular Ocular Reflex Testing Using a Six Degrees of Freedom Motion Platform
10:12

Three Dimensional Vestibular Ocular Reflex Testing Using a Six Degrees of Freedom Motion Platform

Published on: May 23, 2013

15.9K
Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss
07:12

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

Published on: April 11, 2025

297

相关实验视频

Last Updated: Jun 3, 2025

Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition
07:45

Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition

Published on: July 21, 2020

4.4K
Three Dimensional Vestibular Ocular Reflex Testing Using a Six Degrees of Freedom Motion Platform
10:12

Three Dimensional Vestibular Ocular Reflex Testing Using a Six Degrees of Freedom Motion Platform

Published on: May 23, 2013

15.9K
Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss
07:12

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

Published on: April 11, 2025

297

科学领域:

  • 神经科学是一个神经科学.
  • 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:

  • 视皮质反应依赖于增强控制,包括包围抑制.
  • 抑制强度随着刺激的特征而变化,例如方向相似性.
  • 定向调节抑制对对比反应的影响还没有得到充分研究.

研究的目的:

  • 研究定向调节抑制在早期视觉皮层中调节对比响应函数 (CRF) 的作用.
  • 确定特征相似性,特别是对线性与直角性的相似性,如何影响抑制强度.
  • 为了检查这种调节抑制在视野中的空间传播.

主要方法:

  • 使用功能磁共振成像 (fMRI) 测量视觉区域V1-V3.3中的大脑活动.
  • 给观察者提供了中心周围格子,其中中心和周围的方向是对直线或直角的.
  • 在一系列中心刺激对比度中测量了人口对比反应函数 (CRF).

主要成果:

  • 当周围格子与正交格子相比与中心格子对齐时,观察到更强的抑制.
  • 这种定向调节的抑制导致了人口CRF的显著转变.
  • CRF转移的幅度取决于voxel的空间偏好,主要影响中心周围边界附近的voxel.

结论:

  • 导向相似性显著影响早期视觉皮层中围绕抑制的强度.
  • 调节抑制主要影响神经群体,在中心周围边界处具有受体场的神经群体.
  • 这些发现阐明了特征调节的增益控制机制,塑造了视觉处理和感知.