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How many neurons are sufficient for perception of cortical activity?

Published on by Michael Hausser
This project examines the lower limit for perception of neural activity in the cortex, using targeted two-photon optogenetic activation of small ensembles of L2/3 pyramidal neurons in mouse barrel cortex while using two-photon calcium imaging to record the impact on the local network. By precisely titrating the number of neurons in activated ensembles we demonstrate that the lower bound for detection of cortical activity is ~14 pyramidal neurons.

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Funding

ERC: Michael Häusser, 695709; Wellcome Trust: Michael Häusser, 201225

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