2,215 results found
    1. Neuroscience

    High-throughput synapse-resolving two-photon fluorescence microendoscopy for deep-brain volumetric imaging in vivo

    Guanghan Meng et al.
    Improved two-photon fluorescence microendoscopy enables volumetric imaging of synapses and neurons in deep brain structures in vivo.
    1. Neuroscience

    Direct extraction of signal and noise correlations from two-photon calcium imaging of ensemble neuronal activity

    Anuththara Rupasinghe et al.
    An inference paradigm for extracting neuronal correlations from two-photon imaging data, without requiring intermediate spike deconvolution, provides significant performance gains over existing methods as demonstrated by theoretical analysis, simulation studies, and real-data applications.
    1. Neuroscience

    Extended field-of-view ultrathin microendoscopes for high-resolution two-photon imaging with minimal invasiveness

    Andrea Antonini et al.
    Aberration correction using 3D microprinting in ultrathin microendoscopes allows two-photon imaging of large neuronal networks with homogeneously high spatial resolution and minimal invasiveness in the deep mouse brain.
    1. Neuroscience

    Two-photon calcium imaging of the medial prefrontal cortex and hippocampus without cortical invasion

    Masashi Kondo et al.
    Establishment of two-photon imaging with a 1100-nm laser, which underfills the objective's back aperture, detects activity of multiple neurons in the prelimbic area and hippocampal CA1 region of the intact mouse brain.
    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

    Large-scale two-photon imaging revealed super-sparse population codes in the V1 superficial layer of awake monkeys

    Shiming Tang et al.
    Two-photon imaging reveals super-sparse responses to natural images in primate V1, which carry sufficient information for discrimination of the input natural images with high accuracy.
    1. Neuroscience

    Fast two-photon imaging of subcellular voltage dynamics in neuronal tissue with genetically encoded indicators

    Simon Chamberland et al.
    The combination of a new genetically encoded voltage indicator and fast two-photon imaging methods enables detection of rapid neural electrical activity in organotypic slice cultures and in living flies.
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    Quantitative analysis of 1300-nm three-photon calcium imaging in the mouse brain

    Tianyu Wang et al.
    Quantitative experiments and analysis determine the limit of excitation power of 1300-nm three-photon microscopy, and the imaging depth where three-photon outperforms two-photon for calcium imaging in the mouse brain.
    1. Neuroscience

    Dendritic coincidence detection in Purkinje neurons of awake mice

    Christopher J Roome, Bernd Kuhn
    Simultaneous voltage and calcium two-photon imaging of Purkinje neuron dendrites in awake mice reveals multiple interplaying mechanisms underlying sensory-evoked dendritic coincidence detection of parallel fiber and climbing fiber input.
    1. Neuroscience

    Reconciling functional differences in populations of neurons recorded with two-photon imaging and electrophysiology

    Joshua H Siegle et al.
    Discrepancies between functional responses measured with electrophysiology and calcium imaging can be largely reconciled by considering the spike-to-calcium transfer function, neuronal sampling bias, and cluster merging artifacts during spike sorting.

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