Reaction game and falling-target training guide
A reaction game becomes more demanding when the stimulus moves. Instead of waiting for one color change, you detect a target in a lane, estimate where it will be, move the pointer, and click before it escapes. This drill combines visual search, timing, tracking, and motor execution in a short browser session.
The game records the interval between a target's frame-time appearance and pointer contact using the browser's high-resolution clock. That interval is not a pure nervous-system constant: display refresh, browser scheduling, frame delivery, pointer hardware, visual processing, and hand movement all contribute to the number.
Falling targets also create a choice problem. You must notice which lane is active, select the useful interception point, and avoid clicking an empty lane. Keeping the cursor relaxed near the upper-middle field lets you respond to new targets without a large panic movement.
Use the score as a repeatable training signal. Keep display, browser, input device, sensitivity, penalty mode, and session length stable, then compare accuracy, average reaction, peak level, and combo together. Short practice blocks with rest are more useful than a fatigued record chase.