298 results found
    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. Computational and Systems Biology
    2. Neuroscience

    Information flows from hippocampus to auditory cortex during replay of verbal working memory items

    Vasileios Dimakopoulos, Pierre Mégevand ... Johannes Sarnthein
    Precisely tracking the anatomical sources of neural computations infers functional directed connectivity between hippocampal memory neurons and cortical sensory neurons, it reveals information flowing from cortex to hippocampus during encoding but the reverse direction during maintenance.
    1. Neuroscience

    Interneuron-specific gamma synchronization indexes cue uncertainty and prediction errors in lateral prefrontal and anterior cingulate cortex

    Kianoush Banaie Boroujeni, Paul Tiesinga, Thilo Womelsdorf
    A fast spiking interneuron sub-type in medial and lateral prefrontal cortex fires and gamma-synchronizes prominently during adaptive learning of reward values when outcomes are uncertain and choice options have similar values.
    1. Neuroscience

    MTL neurons phase-lock to human hippocampal theta

    Daniel R Schonhaut, Aditya M Rao ... Michael J Kahana
    Neural spiking throughout the MTL is synchronous with hippocampal theta phase during spatial memory and navigation experiments in humans, even after controlling for phase-coupling to local theta oscillations.
    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

    Dopamine lesions alter the striatal encoding of single-limb gait

    Long Yang, Deepak Singla ... Sotiris C Masmanidis
    Striatal neurons preferentially fire at specific phases of the gait cycle, and the strength of gait encoding is selectively increased in indirect pathway neurons following dopamine lesions.
    1. Neuroscience

    Stimulus background influences phase invariant coding by correlated neural activity

    Michael G Metzen, Maurice J Chacron
    Building on previous work (Metzen et al., 2016), a combination of neurophysiological and behavioral approaches reveals that changes in the background strongly impacts invariant coding and perception of behaviourally relevant signals.
    1. Neuroscience

    Phase-tuned neuronal firing encodes human contextual representations for navigational goals

    Andrew J Watrous, Jonathan Miller ... Joshua Jacobs
    Prospective navigational goals are represented by single neuron firing rates and firing relative to slow oscillatory phase (phase coding) in the human medial temporal lobe.
    1. Neuroscience

    A quantitative theory of gamma synchronization in macaque V1

    Eric Lowet, Mark J Roberts ... Peter De Weerd
    Gamma-band synchronization behavior in area V1 was predicted by weakly coupled oscillator principles.
    1. Neuroscience

    Phase-amplitude coupling supports phase coding in human ECoG

    Andrew J Watrous, Lorena Deuker ... Nikolai Axmacher
    Electrocorticography (ECoG) reveals that phase-amplitude coupling relates to phase-dependent coding in the human brain.

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