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Related Concept Videos

Neural Circuits01:25

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Neural circuits and neuronal pools are two of the main structures found in the nervous system. Neural circuits are networks of neurons that work together to carry out a specific task or process. They consist of interconnected neurons and glial cells, which provide structural and metabolic support.
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During embryogenesis, cells become progressively committed to different fates through a two-step process: specification followed by determination. Specification is demonstrated by removing a segment of an early embryo, “neutrally” culturing the tissue in vitro—for example, in a petri dish with simple medium—and then observing the derivatives. If the cultured region gives rise to cell types that it would normally generate in the embryo, this means that it is specified. In...
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Neuroplasticity reflects the brain's remarkable capacity to adapt and evolve, responding dynamically to learning, experiences, or injury by reorganizing its neural circuitry. This reorganization involves creating new neural connections and refining old ones through a series of biological processes that contribute to the brain's lifelong development and adaptability.
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Neurulation is the embryological process which forms the precursors of the central nervous system and occurs after gastrulation has established the three primary cell layers of the embryo: ectoderm, mesoderm, and endoderm. In humans, the majority of this system is formed via primary neurulation, in which the central portion of the ectoderm—originally appearing as a flat sheet of cells—folds upwards and inwards, sealing off to form a hollow neural tube. As development proceeds, the...
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Homochronic Transplantation of Interneuron Precursors into Early Postnatal Mouse Brains
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Variability in Neural Circuit Formation.

Kevin J Mitchell1

  • 1Smurfit Institute of Genetics and Institute of Neuroscience, Trinity College Dublin, Dublin D02 PN40, Ireland kevin.mitchell@tcd.ie.

Cold Spring Harbor Perspectives in Biology
|January 22, 2024
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Summary
This summary is machine-generated.

Neural development variation offers insights into genome encoding, human traits, and evolution. Studying these differences reveals fundamental mechanisms of nervous system assembly and function.

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Genetics

Background:

  • Neural development research typically focuses on normative mechanisms of nervous system assembly.
  • Variation in neural development processes and outcomes is often studied to understand these standard mechanisms.
  • However, variation itself holds significant scientific interest from multiple perspectives.

Purpose of the Study:

  • To examine the multifaceted nature of variation in neural circuit development.
  • To explore how this variation informs our understanding of genomic encoding, human psychological traits, and evolutionary processes.

Main Methods:

  • Conceptual analysis of existing research on neural development and variation.
  • Integration of findings from genetics, neuroscience, and evolutionary biology.

Main Results:

  • Variation in neural development processes and outcomes is linked to genomic encoding.
  • Brain wiring variations in humans correlate with psychological/behavioral traits and neurodevelopmental disorders.
  • Genetic variation influencing circuit development serves as a basis for evolutionary change.

Conclusions:

  • Variation in neural circuit development is a critical area of study, not just a deviation from the norm.
  • Understanding variation provides insights into genetic underpinnings, human diversity, and evolutionary trajectories of nervous systems.