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Related Concept Videos

Neuron Structure01:31

Neuron Structure

Overview
Neuron Structure01:30

Neuron Structure

Neurons are the main type of cell in the nervous system that generate and transmit electrochemical signals. They primarily communicate with each other using neurotransmitters at specific junctions called synapses. Neurons come in many shapes that often relate to their function, but most share three main structures: an axon and dendrites that extend out from a cell body.
Structure and Function of Neurons
The neuronal cell body—the soma— houses the nucleus and organelles vital to cellular...
Neurogenesis and Regeneration of Nervous Tissue01:15

Neurogenesis and Regeneration of Nervous Tissue

In the CNS, neurogenesis, the birth of new neurons from stem cells, is limited to the hippocampus in adults. In other regions of the brain and spinal cord, neurogenesis is almost non-existent due to inhibitory influences from neuroglia, especially oligodendrocytes, and the absence of growth-stimulating cues. The myelin produced by oligodendrocytes in the CNS inhibits neuronal regeneration. Furthermore, astrocytes proliferate rapidly after neuronal damage, forming scar tissue that physically...
Neurons as Communicators of the Brain01:22

Neurons as Communicators of the Brain

Neurons, the fundamental units of the brain and nervous system, function as the primary transmitters of information throughout the body. Their ability to communicate through electrical and chemical signals is vital for every bodily function, from regulating the heartbeat to processing complex thoughts. Each neuron has three main components: the cell body (soma), dendrites, and an axon, each specialized to facilitate swift and efficient neural communication.
Cell Body
The cell body, also known...
Neuroplasticity01:01

Neuroplasticity

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.
Organization of the Brain01:31

Organization of the Brain

The brain is an integral component of the nervous system and serves as the center for processing sensory inputs, making decisions, and directing bodily actions. This complex organ is organized into three primary sections: the hindbrain, midbrain, and forebrain, each responsible for a range of vital functions.
Hindbrain
The hindbrain, located at the base of the brain, plays a vital role in regulating automatic processes that sustain life. It includes the medulla oblongata, which is essential for...

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Related Experiment Video

Updated: Jul 4, 2026

Assessment of Ultrastructural Neuroplasticity Parameters After In Utero Transduction of the Developing Mouse Brain and Spinal Cord
10:28

Assessment of Ultrastructural Neuroplasticity Parameters After In Utero Transduction of the Developing Mouse Brain and Spinal Cord

Published on: February 26, 2019

Brain evolution and uniqueness in the human genome.

Jordan P Amadio1, Christopher A Walsh

  • 1Division of Genetics, Children's Hospital Boston, Howard Hughes Medical Institute, Beth Israel Deaconess Medical Center, and Broad Institute of MIT and Harvard, Boston, MA 02115, USA.

Cell
|September 23, 2006
PubMed
Summary
This summary is machine-generated.

Researchers discovered a novel noncoding RNA gene with a unique human structure. This gene rapidly evolved in humans and may play a role in regulating human brain development.

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Related Experiment Videos

Last Updated: Jul 4, 2026

Assessment of Ultrastructural Neuroplasticity Parameters After In Utero Transduction of the Developing Mouse Brain and Spinal Cord
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Published on: February 26, 2019

Time-Lapse Imaging of Migrating Neurons and Glial Progenitors in Embryonic Mouse Brain Slices
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A Comparative Approach for Quantitative Cell Counting Studies in Widely Different Mammalian Brains
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Published on: January 16, 2026

Area of Science:

  • Evolutionary biology
  • Genomics
  • Neuroscience

Background:

  • The evolution of the unique human brain is not well understood.
  • Mammalian genomes offer clues to human evolutionary history.

Purpose of the Study:

  • To identify human-specific genetic elements that evolved rapidly.
  • To investigate the potential role of these elements in human brain evolution.

Main Methods:

  • Comparative genomics analysis of human and other mammalian genomes.
  • Bioinformatic search for short conserved DNA elements with rapid human-specific evolution.
  • Identification and characterization of a novel noncoding RNA gene.

Main Results:

  • A novel noncoding RNA gene exhibiting rapid evolution exclusively in the human lineage was identified.
  • This gene possesses a unique structural conformation specific to humans.
  • The noncoding RNA may function as a regulator of neurodevelopment.

Conclusions:

  • The identified noncoding RNA represents a potentially crucial element in human brain evolution.
  • Further research into this gene's function could illuminate the genetic basis of human neurodevelopmental uniqueness.