Cells & Circuits

Your selections: Cells and Circuits
A stressful situation activates three major communication systems in the brain, all of which regulate bodily functions.
  • BrainFacts/SfN
Often considered the most important sense for humans, hearing allows us to communicate with each other by receiving sounds and interpreting speech.
  • BrainFacts/SfN
Cells within the nervous system, called neurons, communicate with each other in unique ways. The neuron is the basic working unit of the brain.
  • BrainFacts/SfN
The brain uses a variety of chemicals called neurotransmitters to communicate between brain cells.
  • BrainFacts/SfN
Once the neural induction has occurred, the next step for new neurons is a journey to the proper position in the brain. This process is called migration, and it begins three to four weeks after a human baby is conceived.
  • BrainFacts/SfN
The brain uses some unconventional means to communicate.
  • BrainFacts/SfN
Hormones are important messages both within the brain and between the brain and the body.
  • BrainFacts/SfN
Insulation covering wires preserves the strength of the electrical signals that travel through them. The myelin sheath covering axons serves a similar purpose.
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The messages sent from one brain cell to another are the basis of brain function. Brain cells communicate through both electrical and chemical means.
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Chemical reactions within brain cells translate the neurotransmitter message for the neuron.
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Molecules that are important in brain development may help treat or prevent brain injuries and disorders.
  • BrainFacts/SfN
Teaching packets for teachers, aimed at secondary school students. Learn how the brain's reward center works, and what happens in the brain when a person uses cocaine, opiates (heroin), or marijuana.
  • National Institute on Drug Abuse

3D Brain

An interactive brain map that you can rotate in a three-dimensional space.