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Related Concept Videos

Cranial Bones: Superior and Posterior View01:14

Cranial Bones: Superior and Posterior View

The superior view of the cranium shows the frontal and paired parietal bones.
The frontal bone is the single bone that forms the forehead. At its anterior midline, between the eyebrows, there is a slight depression called the glabella. The frontal bone also forms the supraorbital margin of the orbit. Near the middle of this margin is the supraorbital foramen, the opening that provides passage for a sensory nerve to the forehead. The frontal bone is thickened just above each supraorbital margin,...
Anatomy of the Brain: Major Regions01:20

Anatomy of the Brain: Major Regions

The brain is the most complex organ in the human body. It consists of four main parts: the cerebrum, diencephalon, cerebellum, and brainstem.
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Anatomy of the Brain: Ventricles

There are hollow fluid-filled cavities known as ventricles deep inside the human brain. There are two lateral ventricles, one in each cerebral hemisphere, and each has three different projections — the anterior, inferior, and posterior horns visible from the lateral side. A thin membrane called the septum pellucidum separates the two lateral ventricles. The slender third ventricle in the diencephalon is connected to each lateral ventricle via a channel called the interventricular foramen. The...
Cerebrum: Anatomical Overview II01:11

Cerebrum: Anatomical Overview II

Each cerebral hemisphere can be divided into three main regions. The outermost region, the cerebral cortex, is a thin layer (2 to 4 millimeters thick) made up of gray matter, consisting of neuron cell bodies, dendrites, glial cells, and blood vessels. The middle region, or white matter, is primarily composed of myelinated nerve fibers organized into three types of large tracts: association fibers, commissures, and projection fibers. Association fibers connect different areas within the same...
Spinal Cord: Cross-sectional Anatomy01:16

Spinal Cord: Cross-sectional Anatomy

The cross-sectional anatomy of the spinal cord offers a detailed view of its complex structure and function within the central nervous system. At the core of the spinal cord lies the gray matter, characterized by its butterfly or "H"-shaped appearance in cross-section. This central region is enveloped by white matter, with the overall structure divided into symmetrical halves by the dorsal median sulcus and the ventral median fissure.
Gray Matter and its Components
Central to the gray matter is...
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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
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Generating brain-wide connectome using synthetic axonal morphologies.

Remy Petkantchin1, Adrien Berchet2, Hanchuan Peng3,4

  • 1Blue Brain Project, EPFL, Geneva, Switzerland. remy.pet@gmail.com.

Nature Communications
|July 17, 2025
PubMed
Summary
This summary is machine-generated.

Researchers developed a computational method to predict whole-brain connectivity at the single-cell level using sparse experimental data. This technique accurately models axonal morphologies, enabling new in silico studies of brain networks.

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Area of Science:

  • Neuroscience
  • Computational Biology
  • Connectomics

Background:

  • Detailed local brain connectivity is available via electron microscopy.
  • Large-scale inter-regional brain connectivity is typically studied using MRI.
  • Understanding the interplay between local and long-range connections is crucial for brain research.

Purpose of the Study:

  • To develop a computational technique for predicting whole-brain connectivity at the single-cell level.
  • To generate detailed whole-brain axonal morphologies from sparse experimental data.
  • To enable in silico experimentation for large brain regions.

Main Methods:

  • Leveraging a dataset of whole-brain axonal reconstructions.
  • Generating detailed whole-brain axonal morphologies for cortical pyramidal cells.
  • Computationally synthesizing axons to predict large-scale inter-regional connectivity.

Main Results:

  • The computationally generated axons accurately reproduce local and global morphological properties of experimental reconstructions.
  • The synthesized axons enable the prediction of large-scale inter-regional connectivity.
  • The study defines the projectome and connectome of the brain through computational synthesis.

Conclusions:

  • The developed technique effectively predicts whole-brain connectivity at the single-cell level.
  • Computational synthesis of axonal morphologies provides a powerful tool for studying brain networks.
  • This approach facilitates in silico experimentation for understanding brain function and pathology.