PLAYER LAB / RESPONSE & ATTENTION
Know your starting point.
Respond when the signal says GO. Hold when it says HOLD. Learn your pattern before looking for a change.
A short browser task, not a sporting or clinical measurement. Screen, browser and input delays affect these results. Use the same device, browser, display and input method each time.
START WITH A PRACTICE
Accuracy before speed.
- WAIT for a signal. An early response counts as an error.
- GO → respond once. HOLD → do nothing.
- Stay on this tab until the run ends, about 45 seconds.
Get ready.
PRACTICE COMPLETE / NOT SAVED
You know the task.
Now complete 16 trials: 12 GO signals and 4 HOLD signals, in a shuffled order. Only a completed run can become part of your baseline.
Run cancelled.
YOUR COMPLETED RUN
A starting point, not a verdict.
How the numbers are calculated
Timing starts when the browser requests the visible signal. Correct GO responses from 100–1,600 ms enter the median and 90th percentile. A response under 100 ms is marked anticipatory. Early responses, responding to HOLD, anticipatory responses and missed GO signals count as errors. HOLD signals last 1,600 ms. At least 6 timed GO responses are needed to save a timing run. The slow tail describes this short sample; it is not a validated vigilance score.
Baseline = the median of the first 3 saved, comparable run medians. We group by task version, response method, browser family, screen size and pixel ratio. That cannot prove the hardware is identical: keep your setup consistent yourself. Faster responses are not automatically better when errors rise.
Take the idea back to practice.
Optional. Name a cue and an observation for a real sport drill. Keep names and health information out of these notes.
Nothing is saved until you choose Save. Results are not sent to a coach.
SAVED ON THIS BROWSER ONLY
Your record.
Remove only this player lab’s saved runs and notes from this browser? Other Zencora demo data stays intact.
No saved runs yet. Start with the practice above.
| Saved run | Median | Slow tail | Errors | Input | Baseline group |
|---|
No leaderboard, readiness rank or diagnosis. A difference describes these runs; it does not establish that sleep, a routine, equipment or training caused the change.