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Schwann Cells

Schwann cells insulate the nerves outside the brain and spinal cord, speeding up neural signaling.

How Ear Hairs Stick Together

Stereocilia connect one row to the next to sway together for sound.

Before You Had Eyes

Optic vesicles grow into an empty pathway where the brain lays wiring that becomes the optic nerve.

Why You Get Brain Freeze

A hot day calls for a cold treat. But gobble down that icy sweet, and a brain freeze you’re sure to meet.

Rita Levi-Montalcini

The Italian-American neurologist discovered a protein neurons need to grow.

Neurons Run on Calcium

From cell metabolism to electrical signaling, the multitasking mineral does it all.

Rods and Cones

It takes two photoreceptors in the eye, differing in size and function but working together, to let us see the world.

Supporting Cast Shines in the Retina

Many of the retina’s cells act as supporting characters to the neuron chains responsible for handling visual information.

The Neuroscience of Touch and Pain

The sense of touch conveys important social information and tells you when something is dangerous by letting you feel pain.

A Look Inside Vision

Many cells and molecules work together to help you see the world around you.

Brainy Cells and Brawny Cells, Both Built From Similar Stuff

This protein helps fortify cellular might.

Hearing

The process, function, or power of perceiving sound.