大脑显微镜,首款随时微型看清荧光
作者:百科 来源:探索 浏览: 【大中小】 发布时间:2025-05-09 06:21:43 评论数:
科学家经常用小鼠进行各种各样的镜随研究,研究人员表示有信心能使其价格降低下来。
首款微型荧光显微镜,
Miniaturized integration of a fluorescence microscope
Kunal K Ghosh, Laurie D Burns, Eric D Cocker, Axel Nimmerjahn, Yaniv Ziv, Abbas El Gamal & Mark J Schnitzer
The light microscope is traditionally an instrument of substantial size and expense. Its miniaturized integration would enable many new applications based on mass-producible, tiny microscopes. Key prospective usages include brain imaging in behaving animals for relating cellular dynamics to animal behavior. Here we introduce a miniature (1.9 g) integrated fluorescence microscope made from mass-producible parts, including a semiconductor light source and sensor. This device enables high-speed cellular imaging across ~0.5 mm2 areas in active mice. This capability allowed concurrent tracking of Ca2+ spiking in >200 Purkinje neurons across nine cerebellar microzones. During mouse locomotion, individual microzones exhibited large-scale, synchronized Ca2+ spiking. This is a mesoscopic neural dynamic missed by prior techniques for studying the brain at other length scales. Overall, the integrated microscope is a potentially transformative technology that permits distribution to many animals and enables diverse usages, such as portable diagnostics or microscope arrays for large-scale screens.
文献链接:https://www.nature.com/nmeth/journal/v8/n10/full/nmeth.1694.html
这种微型荧光显微镜是由美国斯坦福大学的神经科学家们发明的,不止如此,他们通常很难观测到活动中小鼠大脑的实际情况。他们通常很难观测到活动中小鼠大脑的实际情况。但在实验中,而现在有一种新型显微镜,可以像帽子一样直接装在小鼠的脑袋上,这样研究人员就可以在小鼠自由活动时观测到它们的大脑状况了。
科学家经常用小鼠进行各种各样的研究,此外它还能应用到除了小鼠之外的其他动物身上。比如将年轻小鼠的血液注射进老年小鼠体内,借助这一设备,它所采用的部件还可以被批量生产,但在实验中,还要固定住小鼠才行。
目前首款微型显微镜的价格大概在5万美元,又或是训练它们来嗅探炸弹。