346 results found
    1. Neuroscience

    Poor coherence in older people's speech is explained by impaired semantic and executive processes

    Paul Hoffman et al.
    Remaining focused on the topic at hand when speaking depends on effective selection of task-relevant semantic knowledge, and declines in this ability account for increases in off-topic speech in older people.
    1. Neuroscience

    Intrinsically regulated learning is modulated by synaptic dopamine signaling

    Pablo Ripollés et al.
    Dopamine modulates behavioral measures of learning and pleasantness in a learning task guided by intrinsic reward, inducing long-term memory benefits specially in those participants with a high sensitivity to reward.
    1. Neuroscience

    Constraints on neural redundancy

    Jay A Hennig et al.
    The distribution of redundant neural activity is coupled with task-relevant activity, which may limit the extent to which redundancy can be exploited by the brain for computation.
    1. Neuroscience

    A neural-level model of spatial memory and imagery

    Andrej Bicanski, Neil Burgess
    The BB model explains spatial cognition in terms of interactions between specific neuronal populations, providing a common computational framework for the human neuropsychological and in vivo animal electrophysiological literatures.
    1. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    The aryl hydrocarbon receptor and interferon gamma generate antiviral states via transcriptional repression

    Tonya Kueck et al.
    Distinct antiviral signaling pathways, triggered by the aryl hydrocarbon receptor and Interferon-gamma, converge on CDK/cyclin repression, causing inhibition of viral DNA synthesis.
    1. Neuroscience

    Cerebellar implementation of movement sequences through feedback

    Andrei Khilkevich et al.
    The cerebellum can learn a sequence of responses by using a feedback signal from the previous movement to learn the next one.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Nuclear pore heterogeneity influences HIV-1 infection and the antiviral activity of MX2

    Melissa Kane et al.
    Comprehensive investigation reveals the variability and importance of the nuclear pore complex in HIV-1 infection and the activity of the antiretroviral protein, MX2.
    1. Neuroscience

    Functional gradients of the cerebellum

    Xavier Guell et al.
    Cerebellar functional regions follow a gradual organization, which progresses from primary (motor) to transmodal (Default Mode Network) regions, and a secondary axis extends from task-unfocused to task-focused processing.
    1. Neuroscience

    Characterization of developmental and molecular factors underlying release heterogeneity at Drosophila synapses

    Yulia Akbergenova et al.
    Active zone release probability is correlated with calcium channel density and calcium influx at single release sites, with release strength increasing in an activity-dependent manner during synapse maturation.
    1. Cell Biology
    2. Neuroscience

    Presenilin mutations deregulate mitochondrial Ca2+ homeostasis and metabolic activity causing neurodegeneration in Caenorhabditis elegans

    Shaarika Sarasija et al.
    In C. elegans, presenilin functions, independent of its gamma-secretase proteolytic activity, to regulate mitochondrial metabolism by controlling ER-mitochondrial calcium transfer and, even in the absence of Abeta signaling, loss of this activity leads to neurodegeneration.

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