Comment by thomastjeffery
10 hours ago
> Human reaction time is around 200ms
Even if you are talking about the entire loop, that sounds pretty high. Maybe if its moving your hands in reaction to an unexpected stimulus in your feet...
We can tell the difference between 60fps (~16ms per frame) and 120fps (~8ms per frame). Any more than that is a noticeable amount of waiting.
It does get complicated, though. What if the information is presented immediately, then animated? Well, that's where a complete measurement of reaction time would be relevant.
Even so, as you pointed out, we often predict what we will be doing in advance, and can perform a sequence of learned actions much more quickly. If there is a delay imposed before you can perform an action, then you must learn the delay, too. That learning process involves making mistakes (attempting the action before the animation is over), which is extra frustrating, considering how unnecessary it is.
https://humanbenchmark.com/tests/reactiontime
You'll probably see around 200ms. Not saying that's the relevant number in this discussion, but that's probably where the number comes from.
On mobile, I consistently get just under 400ms. I suspect using a mouse would get me closer to 200ms, since I would be resting my finger on the button.
So yes, total reaction time is generally quite long, but most of that time is spent performing "action".
That site would be more interesting if it provided a second interface where you do something predictable, like match a repeating beat.