1,108 results found
    1. Neuroscience

    Age-related differences in prefrontal glutamate are associated with increased working memory decay that gives the appearance of learning deficits

    Milena Rmus, Mingjian He ... Matthew R Nassar
    Apparent age-related differences in learning are best accounted for by rapid decay of information in working memory, which is associated with levels of prefrontal glutamate.
    1. Ecology
    2. Evolutionary Biology

    A new early branching armored dinosaur from the Lower Jurassic of southwestern China

    Xi Yao, Paul M Barrett ... Shundong Bi
    Yuxisaurus represents the first unambiguous armored dinosaur to be recovered from the Lower Jurassic of Asia, confirming the rapid geographic spread and diversification of the armored dinosaurs throughout the northern hemisphere early in their evolution.
    1. Neuroscience

    The rate of transient beta frequency events predicts behavior across tasks and species

    Hyeyoung Shin, Robert Law ... Stephanie R Jones
    Across species, tasks and recording modalities, the rate of transient neocortical beta frequency (15-29Hz) events strongly predicts perceptual ability, providing fundamental mechanistic insight, with implications for tracking and manipulating brain dynamics.
    1. Neuroscience

    Cortico-subcortical β burst dynamics underlying movement cancellation in humans

    Darcy A Diesburg, Jeremy DW Greenlee, Jan R Wessel
    Burst-like neural activity in the β-frequency band conveys inhibitory commands within long-proposed cortico-subcortical networks for motor inhibition, with inhibitory activity in STN preceding thalamic activity, which has strong implications for movement disorders marked by abnormalities in β-bursting.
    1. Neuroscience

    Ripples reflect a spectrum of synchronous spiking activity in human anterior temporal lobe

    Ai Phuong S Tong, Alex P Vaz ... Kareem A Zaghloul
    A continuum of ripple oscillations in human anterior temporal lobe reflects the dynamic synchrony of populations of neurons during memory retrieval.
    1. Neuroscience

    Motor cortex signals for each arm are mixed across hemispheres and neurons yet partitioned within the population response

    Katherine Cora Ames, Mark M Churchland
    Neurons in motor cortex contain information about each arm, but these signals are separated into different dimensions, allowing separate control of each arm.
    1. Neuroscience

    The role of piriform associative connections in odor categorization

    Xiaojun Bao, Louise LG Raguet ... Jay A Gottfried
    Pharmacological fMRI reveals that associative connections contribute to odor categorization by supporting discrimination and generalization at different stages of the human olfactory system.
    1. Neuroscience

    Stimulus dependence of directed information exchange between cortical layers in macaque V1

    Marc Alwin Gieselmann, Alexander Thiele
    Stimulus-induced causal interactions in the gamma range can flow in direction opposite to the canonical microcircuit, violating the notion that they are signatures of feedforward communication.
    1. Neuroscience

    Sleep-dependent upscaled excitability, saturated neuroplasticity, and modulated cognition in the human brain

    Mohammad Ali Salehinejad, Elham Ghanavati ... Michael A Nitsche
    The sleep-deprived brain in humans undergoes upscaled intracortical excitability which diminishes induction of LTP-like plasticity via transcranial electrical stimulation while converting the LTD-like to LTP-like plasticity and these physiological changes couple with impaired learning, memory, and attention at behavioral level.
    1. Neuroscience

    Human hippocampal responses to network intracranial stimulation vary with theta phase

    Sarah M Lurie, James E Kragel ... Joel L Voss
    Human hippocampal connectivity to network afferents varies continuously with the phase of the local theta oscillation, confirming a putative mechanism by which neural oscillations modulate human hippocampal function.

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