Reaction Time Test
When the red screen turns green, click anywhere or press any key as fast as you can.
Test Complete!
Here is a detailed breakdown of your response reflexes.
Round Comparison
Did you know?
Human response times for audio stimulus are considerably faster than response times for visual stimulus? The difference is between 20 and 60 milliseconds. This is because the neural pathway lengths differ. Sound signals travel from your ears to the brain faster than visual signals travel from your eyes.
Check out BioNumbers for specifics on how much faster audio stimulus responses are, with references to the scientific sources for the related research.
Try it yourself! Play the game with your eyes closed by using the tone to signal when to click, then try again after clicking the speaker icon at the top right of the page to mute the audio, and rely on your vision. See how different your own brain responds to these stimulus types.