98 results found
    1. Neuroscience

    Thalamocortical synapses in the cat visual system in vivo are weak and unreliable

    Madineh Sedigh-Sarvestani et al.
    A characterization of LGN-V1 synaptic transmission properties demonstrates thalamocortical synapses in vivo are weak and unreliable, but biologically constrained models show they efficiently drive cortex.
    1. Neuroscience

    Cellular and neurochemical basis of sleep stages in the thalamocortical network

    Giri P Krishnan et al.
    A computational model of the thalamocortical network explains sleep stages by the coordinated variations in the level of neuromodulators and predicts differences of sleep pattern in human, cat and mouse recordings.
    1. Neuroscience

    Thalamocortical and corticothalamic pathways differentially contribute to goal-directed behaviors in the rat

    Fabien Alcaraz et al.
    Adaptive decision-making critically depends on antiparallel flows conveying distinct information within thalamocortical circuits, highlighting directionality of functional exchanges as a neural principle potentially at play in virtually any brain circuit with reciprocal projections.
    1. Neuroscience

    A thalamocortical circuit for updating action-outcome associations

    Virginie Fresno et al.
    Disconnection of the orbitofrontal cortex from the submedius nucleus but not the mediodorsal thalamus prevented rats to respond adaptively following action-outcome reversal, showing differential involvement of these thalamocortical circuits.
    1. Neuroscience

    Binocular matching of thalamocortical and intracortical circuits in the mouse visual cortex

    Yu Gu, Jianhua Cang
    The binocular matching of thalamic inputs to layer 4 cortical neurons initiates before that of intracortical inputs.
    1. Cell Biology
    2. Neuroscience

    Astrocytes refine cortical connectivity at dendritic spines

    W Christopher Risher et al.
    Spines with multiple excitatory contacts are potential sites for competition between thalamic and cortical axons, which is regulated by the astrocytes through the secreted synaptogenic protein hevin.
    1. Neuroscience

    A genuine layer 4 in motor cortex with prototypical synaptic circuit connectivity

    Naoki Yamawaki et al.
    New evidence challenges the long-held view that motor cortex lacks a fourth layer, and reveals that its circuitry resembles that of other cortical regions more than previously thought.
    1. Neuroscience

    Sensory experience inversely regulates feedforward and feedback excitation-inhibition ratio in rodent visual cortex

    Nathaniel J Miska et al.
    Sensory deprivation suppresses cortical responsiveness through a selective remodeling of excitatory and inhibitory microcircuit motifs, by simultaneously amplifying feedforward and suppressing feedback excitation.
    1. Neuroscience

    Mapping cortical mesoscopic networks of single spiking cortical or sub-cortical neurons

    Dongsheng Xiao et al.
    Mesoscale cortical calcium activity correlating with single cortical and thalamic cell spiking reveal rich dynamics and support a novel approach for investigating in vivo functional networks in the mammalian brain.
    1. Neuroscience

    Thalamic input to auditory cortex is locally heterogeneous but globally tonotopic

    Sebastian A Vasquez-Lopez et al.
    Layers 1 and 3b/4 of auditory cortex receive surprisingly heterogeneous but tonotopically matching input from the thalamus.

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