Follow touch, light and vibration into the body. Separate the physical signal from the work of sensing and perception.
Interactive explorationFind the hidden route from mouth to nose. Keep a virtual sample the same, change which messages can get through, and inspect real nasal images and an odor receptor.
Interactive explorationBrake a virtual chair, open a real inner-ear reconstruction, and solve a motion-clue puzzle. Discover why actual movement, sensory responses and what you feel are different.
Interactive explorationBecome a color detective. Move the surroundings, uncover the samples, and inspect the actual pixels. Then put a simple explanation to a harder test.
Interactive explorationSlide a texture beneath a finger. See the contact change, compare a moving touch with a steady one, and zoom from skin to a real sensing protein. Discover how touch differs from pain.
Interactive explorationTip a virtual platform under a real 3D ankle. Discover why one muscle gets more drive while its partner gets less, follow the spinal circuit, and change one connection to see the difference.
Interactive explorationOpen a sourced 3D eye, move a target nearer, and catch the moment its light comes together. Then discover why a smaller pupil is different from better focus.
Interactive explorationStart with a vibration. Follow air, eardrum, tiny bones and hair cells, then see why the message reaching your brain is a different kind of signal.
Interactive explorationNudge a membrane, discover when a spike appears, test its recovery, and cross a chemical synapse. Then inspect a real potassium-channel structure.
Interactive explorationChange a fictional sleep history, catch the moment two curves meet, and separate a local clock change from a biological clock. Then follow light information from eye to brain.
Slide an object toward a lens. Follow the rays, find a sharp image, and discover the moment a camera becomes a magnifier.
Take these steps at your own pace. Your place is not saved as account progress or scored.