114 results found
    1. Neuroscience

    Cortex-wide BOLD fMRI activity reflects locally-recorded slow oscillation-associated calcium waves

    Miriam Schwalm et al.
    Locally recorded calcium events related to slow wave activity show a global cortical fMRI BOLD correlate, establishing a direct relation between a basic neurophysiological signal and the macroscopic perspective of pre-clinical fMRI.
    1. Neuroscience

    Homeostatic regulation of perisynaptic matrix metalloproteinase 9 (MMP9) activity in the amblyopic visual cortex

    Sachiko Murase et al.
    Dark exposure lowers the MMP9 activation threshold, and subsequent light stimulation to an amblyopic eye is sufficient to induce proteolysis at thalamo-cortical synapses in deprived mouse visual cortex.
    1. Neuroscience

    Mesolimbic dopamine projections mediate cue-motivated reward seeking but not reward retrieval in rats

    Briac Halbout et al.
    Inhibiting ventral tegmental dopamine neurons, or their inputs to nucleus accumbens, disrupts cue-motivated reward seeking in a manner that depends on the microstructure of behavior.
    1. Cell Biology
    2. Neuroscience

    Cell-type-specific regulation of neuronal intrinsic excitability by macroautophagy

    Ori J Lieberman et al.
    In addition to its classic role in synaptic function and plasticity, macroautophagy regulates neuronal intrinsic excitability via degradation of acetylated Kir2 channels to control neurotransmission.
    1. Neuroscience

    Shared rhythmic subcortical GABAergic input to the entorhinal cortex and presubiculum

    Tim James Viney et al.
    GABAergic parvalbumin-expressing 'orchid cells' of the medial septum selectively target GABAergic neurons in connected extra-hippocampal areas of the mouse, providing rhythmically bursting inhibitory input at the peak of hippocampal 5-12 Hz theta oscillatory cycles.
    1. Neuroscience

    An image-computable model for the stimulus selectivity of gamma oscillations

    Dora Hermes et al.
    Gamma-band oscillations show striking differences in stimulus selectivity compared to fMRI and broadband field potentials in human visual cortex, and are explained by a novel, image-computable model.
    1. Neuroscience

    Acetylcholine acts on songbird premotor circuitry to invigorate vocal output

    Paul I Jaffe, Michael S Brainard
    The neuromodulator acetylcholine contributes to state-dependent modulation of motor vigor and variability by direct action on songbird premotor cortex, bypassing basal ganglia circuitry.
    1. Human Biology and Medicine
    2. Neuroscience

    Changes in global and thalamic brain connectivity in LSD-induced altered states of consciousness are attributable to the 5-HT2A receptor

    Katrin H Preller et al.
    LSD induces a pattern of changed global brain connectivity characterized by hypo-connectivity in associative areas and hyper-connectivity across sensory and somatomotor areas that is dependent on the serotonin 2A receptor.
    1. Neuroscience

    Revealing the neural fingerprints of a missing hand

    Sanne Kikkert et al.
    The brain continues to represent individual fingers in primary somatosensory cortex decades after the amputation of a hand, indicating that cortical maps do not require ongoing sensory input from the body.
    1. Computational and Systems Biology
    2. Neuroscience

    Stochastic resonance mediates the state-dependent effect of periodic stimulation on cortical alpha oscillations

    Jérémie Lefebvre et al.
    Stochastic resonance, triggered by fluctuations in brain state, is found to determine the outcomes of periodic stimulation and how it interacts with brain oscillations.

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