10秒鐘直覺計時挑戰 隱藏計時器，測試你的內在時鐘準不準

什麼是10秒鐘直覺計時挑戰？

這是一個很單純、也很容易上癮的真人感知挑戰：按下開始後，畫面會把秒數藏起來，你只能依靠自己的內在時鐘判斷何時到達目標秒數。停止後，工具會用 performance.now() 顯示毫秒級實測時間、誤差百分比、評語、最近紀錄與最佳成績。

時間知覺 / time perception

時間知覺 describes how the brain estimates duration, order, and rhythm. Read more on Wikipedia: Time perception, the internal clock model, and the MDN performance.now() reference. This challenge is a lightweight game, not a medical test; attention, excitement, fatigue, music, and counting strategy can all change your sense of duration.

內在時鐘

• Start with the classic 10-second target, then compare 5-second and 30-second rounds.
• Random target mode reduces memorized rhythm and makes each round feel more like an arcade challenge.
• Your attempts stay in this browser through localStorage; no account is required.

Related tools

可以把它當成聚會暖場、直播互動、課堂注意力遊戲，或每天回來刷一次的街機高分挑戰。想換口味，也可以玩站內的公平隨機配對分組產生器或亂數產生器。