人类微质形态和功能中的大脑区域和性别差异
Andrew R Yoblinski1, Jyoti Dubey1, Tyler Myers1
1Department of Psychiatry and Translational Neuroscience Program, University of Pittsburgh Medical School, 450 Technology Drive Suite 223, Pittsburgh, PA 15213, United States.
Cerebral cortex (New York, N.Y. : 1991)
|May 27, 2025
概括
健康人脑中的微质形态表现出基于性别的差异和区域的差异. 这为了解精神分裂症等脑疾病提供了至关重要的基线.
科学领域:
- 神经科学是一个神经科学.
- 细胞生物学 细胞生物学
- 人类解剖学 人类解剖学
背景情况:
- 微质,大脑的免疫细胞,具有与功能相关的动态形态学.
- 变化的微质细胞功能,包括树突性脊柱细胞分裂,与精神分裂症等脑部疾病有关.
- 在研究神经病理学方面,对未患病的大脑中微质形态的清晰理解至关重要.
研究的目的:
- 为了确定健康人体前额叶皮质中微质的详细形态基线.
- 调查微质结构和功能的潜在基于性别和区域差异.
- 为未来关于患病大脑中微质细胞的研究提供一个基准.
主要方法:
- 从死后人类前额叶皮层中检测出超过1300个微质的免疫染和共聚焦显微镜.
- 使用Neurolucida 360软件对微质细胞进行3D追踪.
- 微质形态的量化和与神经元树突棘的相互作用.
主要成果:
- 男性受试者显示出比女性受试者更复杂的微质分支.
- 前带状皮层 (sgACC) 中的微细胞比背侧PFC (DLPFC) 中的微细胞表现出更复杂的分支和更圆的体.
- 与DLPFC微质相比,sgACC微质的树突脊柱细胞化比例较低.
结论:
- 微质形态和功能在健康大脑中的详细表征.
- 在人类前额叶皮层内确定了微质结构的性别特异性和区域变异.
- 建立了一个规范性数据集,对于解释精神和神经疾病中的微质变化至关重要.
相关概念视频
01:20Anatomy of the Brain: Major Regions
The brain is the most complex organ in the human body. It consists of four main parts: the cerebrum, diencephalon, cerebellum, and brainstem.
The cerebrum is the largest section of the brain and divides into left and right hemispheres, separated by a deep fissure. The cerebral outer layer of grey matter — the cerebral cortex — comprises elevations called gyri and shallow groves called sulci. The inner portion of white matter includes long nerve fibers known as axons, which connect various areas...
The cerebrum is the largest section of the brain and divides into left and right hemispheres, separated by a deep fissure. The cerebral outer layer of grey matter — the cerebral cortex — comprises elevations called gyri and shallow groves called sulci. The inner portion of white matter includes long nerve fibers known as axons, which connect various areas...
01:15Functional Brain Systems: Limbic System
The limbic system, often called the "emotional brain," is a complex set of structures located deep within the brain. The intricate network of the limbic system supports a wide range of psychological functions, from emotional regulation to memory formation and sensory processing. This functional brain region encompasses specific parts of the diencephalon and the cerebrum, integrating the higher mental functions of the cerebral cortex with the primitive emotional responses of the deep brain...
01:31Organization of the Brain
The brain is an integral component of the nervous system and serves as the center for processing sensory inputs, making decisions, and directing bodily actions. This complex organ is organized into three primary sections: the hindbrain, midbrain, and forebrain, each responsible for a range of vital functions.
Hindbrain
The hindbrain, located at the base of the brain, plays a vital role in regulating automatic processes that sustain life. It includes the medulla oblongata, which is essential for...
Hindbrain
The hindbrain, located at the base of the brain, plays a vital role in regulating automatic processes that sustain life. It includes the medulla oblongata, which is essential for...
01:05Cerebral Hemispheres
The human brain, a complex organ, is functionally divided into two cerebral hemispheres—left and right. These hemispheres are interconnected by a structure of paramount importance, the corpus callosum. This substantial bundle of neural fibers is not just a bridge between the hemispheres but a crucial element for the brain's comprehensive functioning. It enables efficient communication between the two hemispheres, allowing each side of the brain to control and receive sensory and motor...
01:28Lateralization
Brain lateralization refers to the division of mental processes and functions between the two hemispheres of the brain, a phenomenon that optimizes neural efficiency and underpins complex abilities in humans. This specialization allows each hemisphere to perform tasks where it has a comparative advantage, facilitating more refined cognitive capabilities across different domains.
01:30Biological Influences on Intelligence
Intelligence is often thought to be linked to brain size, but the relationship is more complex than that. While brain size does correlate modestly with some abilities, like verbal skills, the connection is weaker for others, such as spatial reasoning. Other factors, like brain structure, also play crucial roles. For instance, despite Einstein's smaller-than-average brain, his parietal cortex, which is involved in spatial reasoning, was 15% wider, suggesting that neural density might matter more...