Distinguishing cell types by extracellular voltages

Lior J. Sukman and Eran Stark at Tel Aviv University created optoelectrodes with NeuroNexus Buzsaki32-H32_21mm probes for opto-tagging parvalbumin and pyramidal neurons in hippocampal CA1 and cortex of freely-moving mice. They directly tested and confirmed prior modeling results suggesting that different cell types have different spatial distribution of extracellular voltage during action potentials.