PT - JOURNAL ARTICLE AU - Sibille, Jérémie AU - Gehr, Carolin AU - Kremkow, Jens TI - Efficient mapping of the thalamocortical monosynaptic connectivity <em>in vivo</em> by tangential insertions of high-density electrodes in cortex AID - 10.1101/2022.12.28.522000 DP - 2022 Jan 01 TA - bioRxiv PG - 2022.12.28.522000 4099 - http://biorxiv.org/content/early/2022/12/29/2022.12.28.522000.short 4100 - http://biorxiv.org/content/early/2022/12/29/2022.12.28.522000.full AB - Thalamus provides the principal input to cortex, thus understanding the mechanisms of cortical computations in behaving animals requires to characterize the thalamocortical connectivity in vivo. We show that tangential insertions of high-density electrodes into mouse cortex capture the activity of thalamocortical axons simultaneously with their synaptically connected cortical neurons. Multiple thalamic synaptic inputs to cortical neurons can be measured providing an efficient approach for mapping the thalamocortical connectivity in vivo.Competing Interest StatementThe authors have declared no competing interest.