@中野梓 #124801
使用大脑的某个区域会让那里的供血量增加,长期使用会让毛细血管扩张,让神经元变粗壮。
大脑神经网络不是一架结构不变的机器,神经网络的机构和体积都会变化,细胞内包含更多物质,神经回路变得更粗不是毛细血管扩张,而是神经细胞体积变大。
好好看看这张Kandel书中的图,你告诉我这不叫长出新东西?你告诉我这叫捏橡皮泥?
另外,你所谓的neurogenesis成年后就基本停止了的认知是60年前的事了,好好读读这篇16年发表在细胞上的文章
Adult Neurogenesis in the Hippocampus: From Stem Cells to Behavior
The dentate gyrus of the mammalian hippocampus continuously generates new neurons during
adulthood. These adult-born neurons become functionally active and are thought to contribute
to learning and memory, especially during their maturation phase, when they have extraordinary
plasticity.
Over 50 years have passed since the first report of neurogenesis in the hippocampal dentate gyrus (DG) of the adult rodent brain (Altman and Das, 1965). Although the scientific consensus of the time was that the adult brain did not generate new neurons, this discovery was confirmed by numerous subsequent studies. It is now widely accepted that adult neurogenesis occurs in the DG of humans (Eriksson et al., 1998, Spalding et al., 2013), as well as most mammals and several other vertebrates. Adult neurogenesis is the most robust form of plasticity in the adult brain and likely contributes to memory formation. In addition, adult-born neurons have been used to study neuronal development, and defects in neurogenesis have been associated with several human neurological and psychiatric diseases. In this review, we summarize the current knowledge about DG neurogenesis, its origins, regulation, and relevance to disease. We also focus on recent findings on the differentiation, network integration, and function of adult-born dentate granule cells (DGCs).
你告诉我这他妈不叫长出新东西,这叫捏橡皮泥?