Comment by mananaysiempre
1 day ago
> ~100ms represents optimal [human] reflex time in recent research.
For unpredictable inputs. Intervals between a human own actions or discrepancies in delays between successive external events can be effected or perceived with significantly greater precision, especially for people with e.g. music training, especially for percussionists. I’d bet on somewhere between one and two orders of magnitude more precision, that is single-digit milliseconds, at higher skill levels. (Chopin’s Fantaisie-Impromptu is among the easier rhythm-based parlour tricks and already requires staying below ~30ms of error. Alternatively, a single frame at 60fps is 17ms, and speedrunners can hit single frames of a game pretty reliably.)
I'm pretty sure that the way speedrunners get their fast times are by either anticipating, or more likely, by finding an earlier trigger event that correlates, and allows them to hit the frame perfect timing.
Yes, that was my point: just because people can’t react to unexpected events faster than ~100ms does not mean that shorter time periods can somehow be disregarded as imperceptible to the conscious mind or beyond human capability. The perception or reaction jitter is easily an order of magnitude lower than the reaction latency.