Test Your Body
Make a hidden feature of perception appear on your own screen. Each short experiment includes clear instructions, a reset, a result explanation and scientific sources.
One signal at a time.
These experiences are educational demonstrations, not health or cognitive assessments. Your device and surroundings can affect the result.
Blind Spot Test: Find the Gap in Your Vision
Each eye contains a place that cannot see. Your brain quietly paints over it all day.
2 min testHow Fast Is Your Reaction Time?
Wait for the signal, then respond. A few hundred milliseconds reveal a chain from light to decision to muscle.
01 min testStroop Test: Can Your Brain Ignore the Word?
Name the ink, not the word. Reading is so practiced that it competes with the answer you are trying to give.
02 min testDominant Eye Test: Which Eye Does Your Brain Aim With?
Both eyes build the scene, but one may control alignment when you point through a small opening.
01 min testWhy Do You See a Color That Is Not There?
Fix your gaze on one color, then switch to neutral gray. A temporary complementary color reveals adaptation in the visual system.
01 min testNotice the effect. Then follow the mechanism.
A browser can reveal a blind spot, a color afterimage or the interference created by an automatic reading response. It cannot reproduce the standardized equipment, repeated trials or clinical context used in research and healthcare.
Treat your result as the beginning of an explanation, not a score about your body. If a test is uncomfortable, stop. Persistent or concerning symptoms belong with a qualified healthcare professional.