326 results found
    1. Neuroscience

    Simultaneous two-photon imaging and two-photon optogenetics of cortical circuits in three dimensions

    Weijian Yang et al.
    An all-optical 3D two-photon imaging and photostimulation platform was demonstrated, with the capability to precisely stimulate a large group of cells in mice cortex in vivo with low laser power.
    1. Neuroscience

    Optogenetic strategies for high-efficiency all-optical interrogation using blue-light-sensitive opsins

    Angelo Forli et al.
    A new soma-targeted variant of the large-conductance blue-light-sensitive opsin CoChR combined with advanced optical stimulation methods allows high-efficiency all-optical neuronal imaging and stimulation in mouse brain in vivo.
    1. Neuroscience

    Synchronous activity patterns in the dentate gyrus during immobility

    Martin Pofahl et al.
    Two-photon in vivo calcium imaging reveals short time-scale, synchronous and sparse population activity in dentate gyrus that replays place-related information, and is important for formation of dentate-dependent spatial memory.
    1. Neuroscience

    Sparse recurrent excitatory connectivity in the microcircuit of the adult mouse and human cortex

    Stephanie C Seeman et al.
    A high-throughput pipeline for the characterization of cortical connectivity in mouse and human cortex.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Single-color, ratiometric biosensors for detecting signaling activities in live cells

    Brian L Ross et al.
    A novel panel of homoFRET biosensors that detect kinase and second messenger activity, called FLAREs, enables multiparameter imaging of signaling activities within a single live cell with a quantitative and ratiometric readout.
    1. Neuroscience

    How many neurons are sufficient for perception of cortical activity?

    Henry WP Dalgleish et al.
    Targeted optogenetic activation of small ensembles of neurons is sufficient to trigger a behavioral report while recruiting matched network suppression, suggesting exquisite sensitivity despite network mechanisms that maintain sparseness.
    1. Neuroscience

    Cellular resolution circuit mapping with temporal-focused excitation of soma-targeted channelrhodopsin

    Christopher A Baker et al.
    Combining spatial restriction of channelrhodopsin to the neuronal cell body with two photon excitation and calcium imaging will enable production of high resolution maps of neural circuitry.
    1. Neuroscience

    The fate of hippocampal synapses depends on the sequence of plasticity-inducing events

    J Simon Wiegert et al.
    Non-invasive optogenetic induction of synaptic plasticity revealed that long-term potentiation and long-term depression alter the chances of a synapse to survive the next seven days.
    1. Neuroscience

    Clusters of synaptic inputs on dendrites of layer 5 pyramidal cells in mouse visual cortex

    Onur Gökçe et al.
    A combination of optogenetics and 2-photon calcium imaging reveals spatial prerequisites for non-linear synaptic summation within a defined cortical connection.
    1. Neuroscience

    Cell type specificity of neurovascular coupling in cerebral cortex

    Hana Uhlirova et al.
    Excitatory and inhibitory cortical neurons drive parallel vasodilatory pathways, while vasoconstriction is mediated exclusively by inhibition acting via Neuropeptide Y binding to Y1 receptors.

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