Neurodevelopment
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Read explanation on this page ↓ See diagram ↓Development of the nervous system in humans — on-site reading
This reference extract addresses Development of the nervous system in humans, a related subject. It does not cover every part of Neurodevelopment.. The article introduction is reproduced here, so you do not need to leave MedAtlas to read it. It may not match the latest official medical guidance.
The development of the nervous system in humans, or neural development, or neurodevelopment involves the studies of embryology, developmental biology, and neuroscience. These describe the cellular and molecular mechanisms by which the complex nervous system forms in humans, develops during prenatal development, and continues to develop postnatally.
Some landmarks of neural development in the embryo include:
The formation and differentiation of neurons from stem cell precursors (neurogenesis)
The migration of immature neurons from their birthplaces in the embryo to their final positions.
The outgrowth of axons from neurons and the guidance of the motile growth cone through the embryo towards postsynaptic partners.
The generation of synapses between axons and their postsynaptic partners.
The synaptic pruning that occurs in adolescence.
The lifelong changes in synapses which are thought to underlie learning and memory.
Typically, these neurodevelopmental processes can be broadly divided into two classes:
Activity-independent mechanisms. Activity-independent mechanisms are generally believed to occur as hardwired processes determined by genetic programs that are played out within individual neurons. These include differentiation, migration, and axon guidance to their initial target areas. These processes are thought of as being independent of neural activity and sensory experience.
Activity-dependent mechanisms. Once axons reach their target areas, activity-dependent mechanisms come into play. Neural activity and sensory experience will mediate formation of new synapses, as well as synaptic plasticity, which will be responsible for refinement of the nascent neural circuits.
How this connects to Neuroscience
Nervous-system function depends on localized pathways and distributed networks. The timing, distribution and combination of sensory, motor, cognitive or autonomic findings inform localization, while structural imaging, electrophysiology and the clinical examination provide different forms of evidence.
Text credit: Wikipedia contributors, “Development of the nervous system in humans”, original article · authors & revision history · CC BY-SA 4.0. Unmodified opening extract, accessed 24 September 2026. This Wikipedia-derived section is provided under CC BY-SA 4.0; the independent MedAtlas notes and design are separate works.
Neurodevelopment · visual study map
Scalable vector illustration. Labeled conceptual map, not a precise anatomical, histological or diagnostic image.The wording in this learning map is adapted from the attributed Wikipedia background section below (CC BY-SA 4.0).
What the underlying subject studies
Biomedical research begins with a focused, ethically valid question. Define the study population, variables, measurements and decision-relevant uncertainty before selecting a method.
How mechanisms and evidence connect
Compare alternative study designs and account for sampling, confounding, bias, imprecision, missing data and the limits of causal inference. Sound statistical analysis cannot repair invalid measurements or unethical recruitment.
How to develop a sound explanation
Doctoral-level mastery involves reading primary methods, reproducing calculations, writing transparent protocols and defending the assumptions behind each conclusion. University-specific courses and laboratory competencies differ.
References and verification (optional)
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