Brain &amp; Senses

Brain & SensesSmell, taste, flavor and a blocked nose

Why does food seem different when your nose is blocked?

Find 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.

Sensory cutaway & molecular evidenceExplore at your own pace

#smell #taste #flavor #nose

Brain & SensesBalance, spinning, semicircular canals and otolith organs

How do your inner ears help you balance?

Brake 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.

Motion-history lab & actual inner-ear anatomyExplore at your own pace

#balance #inner-ear #vestibular-system #motion

Brain & SensesOptical illusions, color perception and simultaneous brightness contrast

Can two identical colors look different?

Become a color detective. Move the surroundings, uncover the samples, and inspect the actual pixels. Then put a simple explanation to a harder test.

Pixel lab & visual experimentsExplore at your own pace

#optical illusions #perception #color #brightness contrast

Brain & SensesReflexes, spinal circuits and reciprocal inhibition

How does a reflex help your body react?

Tip 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.

#reflexes #spinal-cord #muscles #coordination

Brain & SensesTouch, skin sensation and pain

How does your skin feel touch?

Slide 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.

#touch #skin #sensation #texture

Brain & SensesSleep and the body clock

Why do time awake and time of day both matter for sleep?

Change 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.

Interactive model & evidenceExplore at your own pace

#sleep #circadian-rhythm #body-clock #light

Brain & SensesNeurons and nerve signals

How does a nerve cell send a message?

Nudge a membrane, discover when a spike appears, test its recovery, and cross a chemical synapse. Then inspect a real potassium-channel structure.

#neurons #nerves #action-potential #synapse

Brain & SensesEyes and vision

How does your eye bring the world into focus?

Open 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.

#eyes #vision #light #focus