With a new technique called expansion microscopy, scientists have been taking extremely close looks at fly brains by labeling neurons of interest and tracing their thinnest tendrils to chart connections.
Learn more about this technique at https://www.sciencemag.org/news/2019/01/microscope-captures-intricate-images-glowing-brains-record-speed
Read the paper: http://science.sciencemag.org/content/363/6424/eaau8302
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These videos are short snippets from researchers' work—often videos actually used as data in a study or to demonstrate results in a paper. For context or additional explanation, check paper links and credits.
R. Gao et al., Science 2019
Betzig Lab, Janelia Research Campus
HHMI; Boyden Lab, MIT Media Lab