人类视觉系统中行为衍生物体尺寸的分布式表示
O Contier1,2, C I Baker3, M N Hebart1,4
1Vision and Computational Cognition Group, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany.
bioRxiv : the preprint server for biology
|September 4, 2023
概括
对象视觉处理在大脑中广泛分布,不仅限于类别识别. 来自人类相似性判断的新维度比传统类别更好地预测大脑反应.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 计算视觉 计算机视觉 计算机视觉
背景情况:
- 传统模型假设视觉皮层层次结构用于对象识别和分类.
- 这种以类别为中心的框架可能无法完全捕捉对象视觉的各种行为目标.
- 在理解大脑如何为各种任务表示对象信息方面存在局限性.
研究的目的:
- 通过探索对象视觉中的行为相关维度来挑战以类别为中心的框架.
- 从人类相似性判断得出的维度映射到大脑活动上.
- 为了研究超越简单的分类对象表示的神经基础.
主要方法:
- 对人类相似性判断进行了大规模分析,以获得新的表示维度.
- 使用神经成像技术将这些行为衍生维度映射到大脑反应上.
- 对比了行为衍生维度与传统对象类别对大脑活动的预测能力.
主要成果:
- 揭示了在视觉皮层中广泛分布的行为相关信息表示.
- 对于广泛的新型维度,以及已知的特征和类别选择性,证明了神经选择性.
- 行为衍生维度在预测大脑反应方面显著优于类别,显示广泛的混合选择性和特定类别区域的稀疏选择性.
结论:
- 对象视觉表示比以前认为的更为广,涉及分布式,行为相关的维度.
- 代表性维度的框架协调了关于区域专业化的发现,将类别选择性视为一个具体案例.
- 建议对人类大脑中的视觉处理进行修订,更全面的理解.
相关概念视频
Depth Perception and Spatial Vision
714
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.
714
Visual System
616
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...
616
Gestalt Principles of Perception
343
Gestalt principles provide a framework for understanding how humans perceive objects as unified wholes within their context. These principles are essential in explaining the cognitive processes that make sense of complex visual stimuli by organizing them into coherent groups. One fundamental principle is proximity, which posits that objects located close to each other are perceived as a collective group. For instance, when dots are positioned near one another, the visual system interprets them...
343
Vision
53.6K
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.
53.6K
Dimensional Analysis
15.2K
The concept of dimension is important because every mathematical equation linking physical quantities must be dimensionally consistent, implying that mathematical equations must meet the following two rules. The first rule is that, in an equation, the expressions on each side of the equal sign must have the same dimensions. This is fairly intuitive since we can only add or subtract quantities of the same type (dimension). The second rule states that, in an equation, the arguments of any of the...
15.2K


