视觉心理图像:证据表明异构的神经架构
Alfredo Spagna1, Zoe Heidenry1, Michelle Miselevich2
1Department of Psychology, Columbia University in the City of New York, NY, 10027, USA.
Physics of life reviews
|January 13, 2024
概括
视觉心理图像 (VMI) 涉及到检索和重组记忆. 这次审查揭示了支持VMI的域一般网络和域特定区域,挑战现有模型.
科学领域:
- 认知神经科学 认知神经科学
- 神经成像是一种神经成像.
- 视觉感知 视觉感知 视觉感知
背景情况:
- 视觉心理图像 (VMI) 理论侧重于记忆检索,但缺乏对各种刺激的神经机制的理解.
- 关于大脑如何产生和维护颜色,面孔和形状的心理表征的知识有限.
- 对于VMI的神经回路的组织结构,包括早期视觉皮层,仍然不清楚.
研究的目的:
- 通过五个语义领域对VMI的科学文献进行审查:视觉空间,面部,颜色,形状和字母图像.
- 调查支持VMI的神经相关物和行为机制.
- 为了澄清VMI中涉及的神经回路的组织结构.
主要方法:
- 科学文献的系统审查.
- 分析了60多个与VMI相关的实验设计.
- 来自视觉空间,面部,颜色,形状和字母图像研究的证据综合.
主要成果:
- 在所有VMI域中没有发现一致的早期视觉皮层活动,这与主流模型相矛盾.
- 前端对称网络和左状回环在自愿VMI期间表现出一致的活动,这表明域一般子网络.
- 腹部和背部视觉通路中的特定区域被参与,与感知区域重叠 (例如,面部的FFA,颜色的语言).
结论:
- VMI涉及到总域 (面对面,左形) 和特定域 (视觉通路区域) 的机制.
- 混合垂直和水平连接 (异构) 的组织结构支持VMI.
- 这种异构的组织挑战了当前的VMI模型,将其视为简单的反向感知.
相关概念视频
01:24Vision
53.4K
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.
53.4K
01:26Visual System
585
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...
585
01:20Parallel Processing
152
The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...
152
01:23Storage
86
A schema is a mental framework that helps individuals organize and interpret information. Schemata, formed from previous experiences, influence how we process new information: how we encode it, the inferences we make, and how we retrieve it. For instance, a schema for what a typical classroom looks like might include desks, a teacher's desk, a whiteboard, and students in such an environment. This expectation helps us quickly understand and navigate new classrooms without needing to analyze...
86
01:14Motor and Sensory Areas of the Cortex
3.9K
The cerebral cortex, the brain's outermost layer, is pivotal in processing complex cognitive tasks, emotions, and various sensory inputs and executing voluntary motor activities. This intricate structure is divided into three primary functional areas: the motor areas, sensory areas, and association areas.
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex....
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex....
3.9K