Cells & Circuits

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What Are the Biomarkers for Pain?

Researchers are developing a first-of-its-kind blood test to identify the biomarkers for pain, which could improve pain treatment.

The Short Answer: What is a Synapse?

There’s a lot that happens between neurons. Neuroscientist John Morrison explains what happens in the space that neurons learn.

Brains and Brawn Packed Like Peas in a Pod

Take a closer look at the layers that make a strong core.

Debunked: Do Neurons Die as We Get Older?

Neuroscientist John Morrison explains what really happens to our brain cells as we age.

Installing Insulation

Oligodendrocytes keep electrical signals in the brain and spinal cord strong.

Night Vision

In the human retina, low-light-sensitive rods outnumber color-sensing cones by about twenty to one.

It's a Jungle in Here

The six layers of cells comprising the cerebral cortex are responsible for some of the most complex functions in the brain.

The Eye-Brain Connection

Bundles of extra-long axons transmit signals from eyes to brain.

The Short Answer: What Is Gene Expression?

Neuroscientist Nick Spitzer explains gene expression and how it helps your body’s cells function.

Brains and Brawn

Neurons and muscles communicate at specialized nodes called neuromuscular junctions.

The Short Answer: What Is a Brain Circuit?

Your brain’s 86 billion neurons wire up to form circuits. But just what is a circuit?

Syncing the Body's Clock

Sun-seeking brain cells keep the sleep cycle in balance.

Interact with the Brain