Brain

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brain : the portion of the vertebrate central nervous system enclosed in the skull and continuous with the spinal cord through the foramen magnum that is composed of neurons and supporting and nutritive structures (as glia) and that integrates sensory information from inside and outside the body in controlling autonomic function (as heartbeat and respiration), in coordinating and directing correlated motor responses, and in the process of learning — Webster

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Brain The brain is an organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals. The brain is located in the head, usually close to the sensory organs for senses such as vision. The brain is the most complex organ in a vertebrate’s body. In a human, the cerebral cortex contains approximately 15–33 billion neurons, each connected by synapses to several thousand other neurons. These neurons communicate with one another by means of long protoplasmic fibers called axons, which carry trains of signal pulses called action potentials to distant parts of the brain or body targeting specific recipient cells. — Wikipedia

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Scientific American: Mind & Brain Science news and technology updates from Scientific American


  • Bringing back early memories
    by Katherine Whalley on July 16, 2018 at 12:00 am

    Bringing back early memoriesBringing back early memories, Published online: 16 July 2018; doi:10.1038/s41583-018-0044-xIn mice, ‘lost’ infant memories can be recovered through the optogenetic reactivation of silent engrams in the hippocampus. […]

  • A narcotic–narcoleptic link
    by Natasha Bray on July 16, 2018 at 12:00 am

    A narcotic–narcoleptic linkA narcotic–narcoleptic link, Published online: 16 July 2018; doi:10.1038/s41583-018-0043-yThe brains of individuals who have been addicted to opiate drugs show an increase in the number of hypocretin-expressing neurons — the same neurons that are lost in individuals with narcolepsy. […]

  • On the nature and use of models in network...
    by Danielle S. Bassett on July 12, 2018 at 12:00 am

    On the nature and use of models in network neuroscienceOn the nature and use of models in network neuroscience, Published online: 12 July 2018; doi:10.1038/s41583-018-0038-8Modern network neuroscience involves the use of various types of models to understand the brain. In this Review, Bassett, Zurn and Gold discuss the aims of this approach before examining how network models may be categorized and validated. […]

  • Treasure hunt
    by Sian Lewis on July 10, 2018 at 12:00 am

    Treasure huntTreasure hunt, Published online: 10 July 2018; doi:10.1038/s41583-018-0042-zA discrete subpopulation of CA1 pyramidal cells is identified, which are distinct from place cells, that encode the location of a reward. […]

  • Converging inputs
    by Darran Yates on July 10, 2018 at 12:00 am

    Converging inputsConverging inputs, Published online: 10 July 2018; doi:10.1038/s41583-018-0040-1A study in flies shows that projections from some groups of glomerular neurons converge on certain types of lateral horn neurons to process combinations of odours that are salient for certain behaviours. […]