219 results found
    1. Neuroscience

    Task-induced functional brain connectivity mediates the relationship between striatal D2/3 receptors and working memory

    Matthew M Nour et al.
    Striatal dopamine 2/3 receptor (D2/3R) availability is related to working memory-induced functional connectivity changes in the default mode network, and this mediates the relationship between D2/3Rs and task performance.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Distinct inactive conformations of the dopamine D2 and D3 receptors correspond to different extents of inverse agonism

    J Robert Lane et al.
    The occupation of a sub-pocket near the Na+-binding site in D2R by the Na+-insensitive antagonists is the structural basis for their greater inverse agonism than that of the Na+-sensitive ligands.
    1. Neuroscience

    Gi/o protein-coupled receptors in dopamine neurons inhibit the sodium leak channel NALCN

    Fabian Philippart, Zayd M Khaliq
    The sodium leak NALCN channel functions as a core effector of GABA-B and D2 receptors that is used along with GIRK channels to regulate action potential firing in dopamine neurons.
    1. Neuroscience

    Dopamine regulates stimulus generalization in the human hippocampus

    Thorsten Kahnt, Philippe N Tobler
    Inhibition of dopamine D2 receptors reduces generalization between stimuli, possibly by reducing interactions between the hippocampus and midbrain.
    1. Neuroscience

    Cocaine-induced adaptation of dopamine D2S, but not D2L autoreceptors

    Brooks G Robinson et al.
    Desensitization of the D2 autoreceptor is reduced following in vivo cocaine exposure due to plasticity in the D2S and not the D2L splice variant.
    1. Neuroscience

    Distinct regulation of dopamine D2S and D2L autoreceptor signaling by calcium

    Stephanie C Gantz et al.
    The loss of calcium-dependent D2 autoreceptor desensitization caused by prior in vivo cocaine exposure may be conferred by an unexpected role of the D2L splice variant as an autoreceptor.
    1. Neuroscience

    Dopamine receptor 1 neurons in the dorsal striatum regulate food anticipatory circadian activity rhythms in mice

    Christian M Gallardo et al.
    For mice, knowing when it is time to feed is dependent on the neurotransmitter dopamine and the D1R receptor of neurons in the dorsal striatum.
    1. Neuroscience

    RIM is essential for stimulated but not spontaneous somatodendritic dopamine release in the midbrain

    Brooks G Robinson et al.
    Midbrain dopamine neurons use sophisticated secretory machinery to establish specialized sites for action potential-evoked release of dopamine from their cell bodies and dendrites.
    1. Neuroscience

    Noradrenaline blockade specifically enhances metacognitive performance

    Tobias U Hauser et al.
    The neurotransmitter noradrenaline selectively modulates metacognition, the conscious insight into one's performance, but does not alter perceptual decision making, revealing that different neuromodulators affect different stages of a decision making process.
    1. Neuroscience

    Distinct roles of striatal direct and indirect pathways in value-based decision making

    Shinae Kwak, Min Whan Jung
    The direct and indirect pathways of the dorsal striatum play indispensable roles in value-dependent action selection and value learning, respectively.

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