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    1. Neuroscience

    Thalamic theta phase alignment predicts human memory formation and anterior thalamic cross-frequency coupling

    Catherine M Sweeney-Reed et al.
    Building on previous work (Sweeney-Reed et al., 2014), it is shown that the timing of the theta rhythm of the right anterior thalamic nucleus predicts human memory formation.
    1. Computational and Systems Biology
    2. Neuroscience

    Flexible theta sequence compression mediated via phase precessing interneurons

    Angus Chadwick et al.
    A new model for phase precession accounts for theta sequence generation, suggests critical roles for interneurons, and predicts circuit properties to optimise memory storage.
    1. Neuroscience

    Independent theta phase coding accounts for CA1 population sequences and enables flexible remapping

    Angus Chadwick et al.
    Independent coding without synaptic coordination explains complex sequences of population activity observed during theta states and maximizes the number of distinct environments that can be encoded through population theta sequences.
    1. Neuroscience

    On cross-frequency phase-phase coupling between theta and gamma oscillations in the hippocampus

    Robson Scheffer-Teixeira, Adriano BL Tort
    Phase-locking of hippocampal theta and gamma waves has been proposed to support memory formation, but an analysis using robust statistical methods finds no convincing evidence for the phenomenon.
    1. Neuroscience

    Hippocampal theta coordinates memory processing during visual exploration

    James E Kragel et al.
    Eye movements time-locked to retrieval and novelty during learning preferentially occur at distinct phases of hippocampal theta.
    1. Neuroscience

    Enhancement of encoding and retrieval functions through theta phase-specific manipulation of hippocampus

    Joshua H Siegle, Matthew A Wilson
    The ability of mice to encode new memories or retrieve existing ones can be selectively manipulated by using optogenetics to inhibit hippocampal activity at specific phases of the theta cycle.
    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

    Altered hippocampal-prefrontal communication during anxiety-related avoidance in mice deficient for the autism-associated gene Pogz

    Margaret M Cunniff et al.
    In POGZ heterozygous mice, reduced anxiety-related avoidance is associated with decreased feedforward inhibition and theta synchrony in the hippocampal-prefrontal pathway.
    1. Neuroscience

    Frontal beta-theta network during REM sleep

    Sujith Vijayan et al.
    Two regions of the frontal lobe – the anterior cingulate cortex and, unexpectedly, the dorsolateral prefrontal cortex – show coordinated rhythmic activity during REM sleep.
    1. Neuroscience

    Computational models of O-LM cells are recruited by low or high theta frequency inputs depending on h-channel distributions

    Vladislav Sekulić, Frances K Skinner
    The contribution of biophysical ion channels to neuron function can be predicted by taking advantage of an ongoing dialogue between model and experiment.