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Related Concept Videos

Neural Circuits01:25

Neural Circuits

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.
Neuronal pools are collections of nerve cells with similar functions and interact through chemical and electrical signals. These pools include both interneurons (the central neural circuit nodes that...
Somatosensory, Motor, and Association Cortex01:23

Somatosensory, Motor, and Association Cortex

The somatosensory cortex in the parietal lobes is crucial for interpreting sensory data such as touch, temperature, and proprioception. The somatosensory cortex, situated in the parietal lobes, plays a vital role in interpreting sensory information like touch, temperature, and proprioception—awareness of body position. This specialized brain region features an organized structure wherein neurons at the top primarily process sensations originating from the lower body. In contrast, those at the...
Organization of the Brain01:30

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: Jun 1, 2026

Visualization of Cortical Modules in Flattened Mammalian Cortices
08:49

Visualization of Cortical Modules in Flattened Mammalian Cortices

Published on: January 22, 2018

The microcircuit concept applied to cortical evolution: from three-layer to six-layer cortex.

Gordon M Shepherd1

  • 1Department of Neurobiology, Yale University School of Medicine New Haven, CT, USA.

Frontiers in Neuroanatomy
|June 8, 2011
PubMed
Summary
This summary is machine-generated.

Evolutionary insights into cerebral cortex organization reveal common microcircuit elements like excitation and inhibition across different cortical layers. Pyramidal cell dendrites show adaptations crucial for regional functions, aiding neocortex evolution understanding.

Keywords:
apical dendritedorsal general cortexhippocampusneocortexolfactory cortexpyramidal neuronrecurrent excitationrecurrent inhibition

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Last Updated: Jun 1, 2026

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Published on: January 22, 2018

Large-scale Three-dimensional Imaging of Cellular Organization in the Mouse Neocortex
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Published on: September 5, 2018

Multi-layer Cortical Ca2+ Imaging in Freely Moving Mice with Prism Probes and Miniaturized Fluorescence Microscopy
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Area of Science:

  • Neuroscience
  • Evolutionary Biology
  • Comparative Anatomy

Background:

  • Understanding cerebral cortex organization relies on its evolutionary history.
  • Microcircuit organization in cortical areas offers new research approaches.
  • Traditional anatomical studies are complemented by microcircuitry analysis.

Purpose of the Study:

  • To investigate the principles of microcircuit organization across different cortical types.
  • To compare three-layer cortices (olfactory, hippocampus, turtle cortex) with six-layer neocortex.
  • To identify conserved circuit elements and region-specific adaptations.

Main Methods:

  • Comparative analysis of cortical microcircuits.
  • Focus on principles of microcircuit organization.
  • Review of pyramidal cell apical dendrite properties.

Main Results:

  • Identified common basic circuit elements: recurrent excitation and lateral inhibition across cortical regions.
  • Highlighted specialized apical dendrite properties in pyramidal cells.
  • Demonstrated conserved and divergent microcircuit principles.

Conclusions:

  • Microcircuit principles provide a framework for understanding cortical evolution.
  • Pyramidal cell dendrite adaptations are key to regional functional specialization.
  • This approach offers new insights into the evolution of neocortical complexity.