62 results found
    1. Neuroscience

    Anosognosia for hemiplegia as a tripartite disconnection syndrome

    Valentina Pacella et al.
    High-level disorders, such as motor awareness, are not localised in the brain but emerge from the interaction between brain circuits.
    1. Neuroscience

    A thalamocortical circuit for updating action-outcome associations

    Virginie Fresno et al.
    Disconnection of the orbitofrontal cortex from the submedius nucleus but not the mediodorsal thalamus prevented rats to respond adaptively following action-outcome reversal, showing differential involvement of these thalamocortical circuits.
    1. Neuroscience

    Oscillatory hyperactivity and hyperconnectivity in young APOE-ɛ4 carriers and hypoconnectivity in Alzheimer’s disease

    Loes Koelewijn et al.
    Electrophysiology pinpoints brain function abnormalities in young people genetically at risk of developing Alzheimer's disease much later in life, supporting theories of initial hyperconnectivity driving eventual profound disconnection.
    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.
    1. Neuroscience

    A connectional hub in the rostral anterior cingulate cortex links areas of emotion and cognitive control

    Wei Tang et al.
    A hub in the rostral anterior cingulate cortex receives unusually high and functionally diverse inputs, providing a biological interface between motivation, incentive based learning, and decision making.
    1. Neuroscience

    Functionally defined white matter of the macaque monkey brain reveals a dorso-ventral attention network

    Ilaria Sani et al.
    Primate attention is not limited to a dorsal fronto-parietal network, but includes a ventral temporal node and its dorso-ventral interactions with other attentional areas.
    1. Cell Biology
    2. Developmental Biology

    Proteolytic processing of palmitoylated Hedgehog peptides specifies the 3-4 intervein region of the Drosophila wing

    Sabine Schürmann et al.
    Proteolysis of lipidated N-terminal peptides that tether Hedgehog morphogens to the surface of source cells is absolutely required for their coupled release and bioactivation in vivo in Drosophila melanogaster.
    1. Neuroscience

    Altered topology of neural circuits in congenital prosopagnosia

    Gideon Rosenthal et al.
    An innovative inter-subject stimulus-locked brain activation approach uncovers marked topological differences in a brain network of higher-order visual regions in individuals with a congenital impairment in face recognition compared with controls.
    1. Chromosomes and Gene Expression
    2. Neuroscience

    Initial elevations in glutamate and dopamine neurotransmission decline with age, as does exploratory behavior, in LRRK2 G2019S knock-in mice

    Mattia Volta et al.
    LRRK2 G2019S knock-in mice are a genetically faithful model that recapitulates the slow disease progression of familial PD, with initial alterations to behaviour and neurotransmission providing early pathophysiological targets for neuroprotective interventions.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Chemotactic network responses to live bacteria show independence of phagocytosis from chemoreceptor sensing

    Netra Pal Meena, Alan R Kimmel
    Eukaryotic chemotaxis to live bacteria was quantified at a high throughput level, for the first time, and mechanistically examined for the interrelationship between chemotaxis and phagocytosis.

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