在物体空间的自我组织地图中出现皮层地形图案
1Department of Psychology and Center for Brain Sciences, Harvard University, Cambridge, MA, USA.
Science advances
|June 21, 2023
概括
这项研究表明,大脑的物体识别系统可能来自于对象数据的平滑映射,而不是不同的功能模块. 这个计算模型通过动态和对象大小来解释类似大脑的组织.
科学领域:
- 计算神经科学是一种神经科学.
- 认知神经科学 认知神经科学
- 计算机视觉 计算机视觉
背景情况:
- 人体腹部视觉流表现出对象信息的系统组织,但根本原因仍在争论中.
- 现有的理论提出了对象选择性皮质组织的独特功能模块.
研究的目的:
- 为了研究学习深度神经网络数据的地形表示的自我组织原理.
- 以计算方式建模类似于大脑的对象表示的出现.
主要方法:
- 将自我组织原理应用于深度神经网络的表示空间.
- 分析了由此产生的地形绘图,以寻找类似大脑的图案.
主要成果:
- 对表示空间的平滑绘制产生了类似大脑的地形图案.
- 通过动态和物体大小观察到大规模的组织.
- 确定了自然出现的面部和场景选择性区域.
结论:
- 这项研究支持对象选择性皮质组织的统一表示空间假设.
- 调整和地形可能反映了一个平滑的映射,而不是不同的功能模块.
相关概念视频
Plotting of Topographic Maps
67
Topographic maps represent the Earth's surface features using contour lines, which connect points of equal elevation to create a two-dimensional representation of three-dimensional terrain. Creating a topographic map requires a systematic approach.Begin by plotting a scaled grid and marking intersections corresponding to the survey's elevation data points. Assign elevation values at these intersections to build the base map. Next, determine contour levels using a consistent contour interval,...
67
Somatosensory, Motor, and Association Cortex
578
The somatosensory cortex in the parietal lobes is crucial for interpreting sensory data such as touch, temperature, and proprioception. The somatosensory cortex, situated in the parietal lobes, plays a vital role in interpreting sensory information like touch, temperature, and proprioception—awareness of body position. This specialized brain region features an organized structure wherein neurons at the top primarily process sensations originating from the lower body. In contrast, those at...
578
Somatosensation
36.7K
The somatosensory system relays sensory information from the skin, mucous membranes, limbs, and joints. Somatosensation is more familiarly known as the sense of touch. A typical somatosensory pathway includes three types of long neurons: primary, secondary, and tertiary. Primary neurons have cell bodies located near the spinal cord in groups of neurons called dorsal root ganglia. The sensory neurons of ganglia innervate designated areas of skin called dermatomes.
36.7K
Motor and Sensory Areas of the Cortex
4.0K
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....
4.0K
Methods of Obtaining Topography
89
Topography involves measuring and mapping land elevations, natural features, and artificial structures to create accurate representations of the terrain. Topographic surveying relies on traditional and modern methods, each with distinct advantages and limitations.Traditional Surveying Methods:Transit stadia surveys and plane table surveys were widely used traditional surveying methods. These techniques relied on instruments like theodolites and stadia rods for measuring distances and angles,...
89
Association Areas of the Cortex
5.6K
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,...
5.6K


