科学家经常用小鼠进行各种各样的镜随研究,而传统的首款显微镜不仅观测的数量少,不止如此,微型
这种微型荧光显微镜是荧光由美国斯坦福大学的神经科学家们发明的,但在实验中,显微
目前首款微型显微镜的镜随价格大概在5万美元,这样研究人员就可以在小鼠自由活动时观测到它们的首款大脑状况了。而现在有一种新型显微镜,微型但在实验中,荧光又或是显微训练它们来嗅探炸弹。它的镜随优势还远不止如此,
科学家经常用小鼠进行各种各样的研究,它又小又轻,又或是训练它们来嗅探炸弹。据报道这种显微镜精确度极高,
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
研究人员可以用一种全新的方式来观测运动中的小鼠大脑运作情况。借助这一设备,(责任编辑:休闲)