的视觉皮层的特征选择性反应在自然视觉过程中跟随眼睛的运动
Will Xiao1,2, Saloni Sharma3, Gabriel Kreiman4
1Department of Neurobiology, Harvard Medical School, Boston, MA, USA. xiaow@fas.harvard.edu.
Nature neuroscience
|April 29, 2024
概括
在自然视觉过程中,灵长类视觉神经元主要使用以眼为中心的参考框架,反应始终跟踪眼神转移,而不是预测它们或整合观看历史.
科学领域:
- 神经科学是一个神经科学.
- 计算神经科学是一种神经科学.
- 视觉感知 视觉感知 视觉感知
背景情况:
- 灵长类动物在自然视力过程中,积极地使用动来移动眼睛.
- 关于视觉神经元是否保持视网膜特征或适应复杂场景中的目光转移存在不确定性.
研究的目的:
- 为了研究视觉神经元在自然灵长类动物视觉过程中的参考框架.
- 为了确定神经元反应是否预测眼神转移或反映稳定的感知.
主要方法:
- 记录了13只子观看自然图像的6个视觉区域的神经元反应.
- 分析了460万个固定和883小时的数据中的空间,时间和特征选择性.
- 利用计算模型来分析受感场属性.
主要成果:
- 面部选择性神经元和一般特征选择性反应跟踪受体场内容和眼睛运动.
- 神经元反应在长时间观看期间仍然依赖于目光.
- 发现预测重绘的证据有限,没有查看历史的整合.
结论:
- 腹部视觉神经元在自然视觉过程中主要在以眼为中心的参考框架内运行.
- 神经元的表现是动态更新与眼神转移,不基于之前的观看历史.
相关概念视频
Vision
53.2K
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.
53.2K
Association Areas of the Cortex
5.3K
Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
5.3K
Anatomy of the Eyeball
7.1K
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...
7.1K
Visual System
579
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...
Once through the pupil, the light passes through the lens, a...
579


