Physically dialing in sound frequencies to induce beautiful geometry provides insight into the way sound, tone and resonance can affect our lives.

This is what 40 Hz looks like. Scientists at MIT are using it to fight Alzheimer's.

A study zeroes in on how 40 Hz sensory stimulation helps sustain an essential process in which the signal-sending branches of neurons — axons — stay wrapped in a fatty insulation called myelin. Often called the brain's “white matter,” myelin protects axons and ensures better electrical signal transmission in brain circuits.