A petavoxel fragment of human cerebral cortex reconstructed at nanoscale resolution Just published in Science. This is spectacular work! The authors obtained a 1 mm3 sample of the human temporal cortex from an individual undergoing epileptic surgery. This sample was then imaged by high-throughput serial section electron microscopy, generating a petascale (= factor of 10^15) dataset. Apart from the technological advancement, there were two main new discoveries: 1⃣ A previously unrecognized class of directionally oriented neurons in deep layers (see panel J in Figure below) 2⃣ Powerful and rare multi-synaptic connections between neurons throughout the sample (see panel K in Figure below). The data can be downloaded here: h01-release.storage.googleap… Link to paper @ScienceMagazine > science.org/doi/10.1126/scie…