学习忽略视觉发作干扰因素的学习取决于一个依赖于配置的坐标系统
Massimo Turatto1, Matteo De Tommaso2, Leonardo Chelazzi3
1Center for Mind/Brain Sciences (CIMeC), University of Trento.
概括
通过视觉分心来捕捉注意力随着时间的推移而习惯. 这种习惯性发生在基于特定配置的表征,而不是视网膜或空间的表征上,表明依赖于上下文的拒绝干扰因素.
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
- 注意力研究研究研究研究
背景情况:
- 视觉发作分心因子的注意力捕捉随着重复暴露 (习惯) 的减少.
- 这种习惯背后的空间参考框架还不太清楚.
- 之前的研究已经广泛描述了习惯性,但没有描述它的神经表现.
研究的目的:
- 为了研究注意力捕捉习惯的空间参考框架.
- 为了确定习惯性是否依赖于视网膜,空间或特定配置的视觉表示.
- 为了阐明分心器排斥的神经机制.
主要方法:
- 参与者执行了视觉定向歧视任务,同时忽略了突出的发作干扰因素.
- 习惯是通过在固定位置反复呈现目标和分心器来诱导的.
- 在习惯之后,改变了目标和分散器的空间排列,以测试不同的空间表示.
主要成果:
- 对注意力捕捉的习惯性显示出对空间形态表示的依赖性很小.
- 结果排除了视网膜的表征,支持了特定配置的表征.
- 随后的实验证实,习惯性是基于特定于配置的,取决于上下文的编码.
结论:
- 对视觉发作干扰物的注意力捕捉的习惯是通过特定配置的表示介导的.
- 干扰器排斥发生在对上下文敏感的更高视觉处理水平上.
- 这表明了基于学习的空间配置来过不相关信息的机制.
更多相关视频
06:46Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity
Published on: March 18, 2019
7.0K
07:45Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition
Published on: July 21, 2020
4.4K
相关概念视频
Depth Perception and Spatial Vision
612
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.
612
Perceptual Constancy
371
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...
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...
371
Visual System
561
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...
561
