Peripheral Reaction Test
Notice signals around the outer edge of the playing field while keeping your gaze near the center.
Play Peripheral Reaction Test
Click the numbered location when a side target appears. Ten signals use randomized side positions.
How to play Peripheral Reaction Test
Click the numbered location when a side target appears. Ten signals use randomized side positions.
How results are calculated
Hits, misses and median detection time.
Accuracy, limitations and fair comparisons
Browser scheduling, device and input differences influence results; recreational only. The challenge runs in your current browser session; compare repeated attempts on the same device for a more useful personal reference.
Questions and answers
Is Peripheral Reaction Test free?
Yes. This activity is free and does not require registration.
Does this test upload my input or score?
No. Gameplay and optional history storage run in your browser on this device; exporting a result requires your own action.
What is the measured result?
Hits, misses and median detection time.
Can the result be treated as a medical or hardware diagnosis?
No. Browser scheduling, device and input differences influence results; recreational only.
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