127 results found
    1. Neuroscience

    A neuronal least-action principle for real-time learning in cortical circuits

    Walter Senn, Dominik Dold ... Mihai A Petrovici
    A principle from which the neuronal dynamics and synaptic plasticity in arbitrary network architectures can be inferred, so that output errors are online minimized while simultaneously processing sensory input streams.
    1. Neuroscience

    TMS-evoked responses are driven by recurrent large-scale network dynamics

    Davide Momi, Zheng Wang, John D Griffiths
    Whole-brain computational modelling, incorporating novel ML-based parameter estimation techniques, reveals how transcranial magnetic stimulation-evoked brain responses are driven at earlier timepoints by local echoes of the external stimulus, and at later timepoints by large-scale network reverberation across the connectome.
    1. Neuroscience

    Mapping brain-behavior space relationships along the psychosis spectrum

    Jie Lisa Ji, Markus Helmer ... Alan Anticevic
    A data-reduced neuro-behavioral geometry in psychosis spectrum disorders mapped symptoms stably on to distinct functional brain regions and offers a framework for informing personalized treatment selection decisions.
    1. Neuroscience

    Gated recurrence enables simple and accurate sequence prediction in stochastic, changing, and structured environments

    Cédric Foucault, Florent Meyniel
    Small gated recurrent neural networks can dynamically adapt to inferred changes in the environment, represent and use the precision of their estimate to weight their updates, and leverage the environment's latent hierarchical structure, like the Bayesian agent and the brain.
    1. Neuroscience

    Dorsal striatum coding for the timely execution of action sequences

    Maria Cecilia Martinez, Camila Lidia Zold ... Mariano Andrés Belluscio
    In adolescent rats, whose actions are more impulsive, neuronal striatal activity that precedes self-initiated action sequences has a steeper modulation by waiting time compared to the modulation found in adults.
    1. Neuroscience

    Precisely timed dopamine signals establish distinct kinematic representations of skilled movements

    Alexandra Bova, Matt Gaidica ... Daniel K Leventhal
    Dopamine signaling gradually causes long-lasting changes in fine motor coordination that can later be activated by acute changes in dopamine neuron activity.
    1. Neuroscience

    Encoding of cerebellar dentate neuron activity during visual attention in rhesus macaques

    Nico A Flierman, Sue Ann Koay ... Chris I De Zeeuw
    Dentate nucleus neurons can dynamically modulate their activity during a visual attention task, comprising not only sensorimotor but also cognitive attentional components.
    1. Neuroscience

    Beta band oscillations in motor cortex reflect neural population signals that delay movement onset

    Preeya Khanna, Jose M Carmena
    Using a sequential neurofeedback-arm reaching task, a new link is established among population neural activity patterns, generation of beta oscillations, and motor behavior changes.
    1. Neuroscience

    Functional connectivity subtypes associate robustly with ASD diagnosis

    Sebastian GW Urchs, Angela Tam ... Pierre Bellec
    Unsupervised clustering of the heterogeneous functional brain organization in autism reveals generalizable patterns of connectivity alterations that extend to the general population.
    1. Neuroscience

    Alterations in the amplitude and burst rate of beta oscillations impair reward-dependent motor learning in anxiety

    Sebastian Sporn, Thomas Hein, Maria Herrojo Ruiz
    State anxiety alters the dynamics of beta oscillations during reward-dependent motor learning, thereby impairing proper updating of motor predictions when learning in unstable environments.

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