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


  • Lasting restoration
    by Natasha Bray on April 24, 2019 at 12:00 am

    Lasting restorationLasting restoration, Published online: 24 April 2019; doi:10.1038/s41583-019-0175-8Certain lasting antidepressant effects of ketamine in a mouse model of depression depend on the restoration of dendritic spines in the prefrontal cortex. […]

  • Roles of axon guidance molecules in neuronal...
    by Alain Chédotal on April 18, 2019 at 12:00 am

    Roles of axon guidance molecules in neuronal wiring in the developing spinal cordRoles of axon guidance molecules in neuronal wiring in the developing spinal cord, Published online: 18 April 2019; doi:10.1038/s41583-019-0168-7Spinal neural circuits are established through the navigation of multiple types of neuronal axon to their appropriate synaptic targets. Chédotal reviews the cellular and molecular mechanisms that control this complex wiring, incorporating recent discoveries of new […]

  • Grids cells go for a goal
    by Natasha Bray on April 16, 2019 at 12:00 am

    Grids cells go for a goalGrids cells go for a goal, Published online: 16 April 2019; doi:10.1038/s41583-019-0170-0Grid cells in the rat medial entorhinal cortex distort their firing patterns local to a reward in the environment. […]

  • Author Correction: Novel electrode technologies...
    by Guosong Hong on April 16, 2019 at 12:00 am

    Author Correction: Novel electrode technologies for neural recordingsAuthor Correction: Novel electrode technologies for neural recordings, Published online: 16 April 2019; doi:10.1038/s41583-019-0169-6Author Correction: Novel electrode technologies for neural recordings […]

  • Targeting senescence
    by Sian Lewis on April 12, 2019 at 12:00 am

    Targeting senescenceTargeting senescence, Published online: 12 April 2019; doi:10.1038/s41583-019-0173-xTargeting senescenc […]