186 results found
    1. Neuroscience

    Theta oscillations locked to intended actions rhythmically modulate perception

    Alice Tomassini et al.
    Theta oscillations synchronize perception with the emerging motor intention in an automatic and task-independent way.
    1. Computational and Systems Biology
    2. Neuroscience

    Speech encoding by coupled cortical theta and gamma oscillations

    Alexandre Hyafil et al.
    Computational modelling shows that coupled theta and gamma oscillations in the auditory cortex can decompose speech into its syllabic constituents, and organize the neural spiking at faster timescale into a decodable format.
    1. Computational and Systems Biology
    2. Neuroscience

    Interneuronal mechanisms of hippocampal theta oscillations in a full-scale model of the rodent CA1 circuit

    Marianne J Bezaire et al.
    Spontaneous theta oscillations and interneuron-specific phase preferences emerge spontaneously in a full-scale model of the isolated hippocampal CA1 subfield, corroborating and extending recent experimental findings.
    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
    2. Physics of Living Systems

    Replay as wavefronts and theta sequences as bump oscillations in a grid cell attractor network

    Louis Kang, Michael R DeWeese
    An experimentally supported model of grid cells naturally enables them to participate in firing sequences that encode rapid trajectories in space.
    1. Neuroscience

    Sub-second dynamics of theta-gamma coupling in hippocampal CA1

    Lu Zhang et al.
    A combination of signal processing and machine learning form a new approach to classify oscillatory coupling in single cycles without averaging over time and to capture cycle-by-cycle changes in coupling.
    1. Neuroscience

    Rhythmic coordination of hippocampal neurons during associative memory processing

    Lara M Rangel et al.
    Different rhythms uniquely contribute to task-related processing in the hippocampus, and changes in the rhythmic profile of the hippocampus reflect dynamic coordination of its cell activity.
    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

    Theta-modulation drives the emergence of connectivity patterns underlying replay in a network model of place cells

    Panagiota Theodoni et al.
    The learning rate for novel spatial environments in model networks of place cells is determined by the product of the window for plasticity and the auto-correlation of place-cell activity.
    1. Neuroscience

    Risk of punishment influences discrete and coordinated encoding of reward-guided actions by prefrontal cortex and VTA neurons

    Junchol Park, Bita Moghaddam
    Risk of punishment during reward seeking behavior is associated with a functional "disconnection" of the PFC-VTA circuit due to a transient loss of VTA-driven theta oscillation.

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