Human Visual Reaction Time Science & Benchmarks
Visual reaction time is the delay between a stimulus appearing on screen and your muscle physically responding. Across millions of recorded Human Benchmark tests, the median healthy adult reaction speed falls between 215 ms and 250 ms.
Factors Influencing Your Reaction Time
- 神经生物学极限：Retinal light capture takes 30–50ms, neural processing to the visual cortex requires ~50ms, and motor cortex commands take 40–60ms. The absolute biological visual limit is roughly 130ms to 150ms.
- 屏幕刷新率与输入延迟：A standard 60Hz display introduces up to 16.7ms frame latency. Using a 144Hz/240Hz high-refresh gaming monitor with a 1000Hz polling wired mouse can shave off 20–40ms of input lag.
- 睡眠与咖啡因状态：Sleep deprivation adds 40–80ms of cognitive sluggishness, while moderate caffeine intake sharpens alertness within 30–60 minutes.