threshold stimulus

基本解釋

Nothing happens until the excitatory stimulus exceeds a certain 'threshold'value.
興奮性刺激超過(guò)某一臨界值以前毫無(wú)反應(yīng)。
Objective: To understand the effect of different rates of stimulus on thermal threshold.
目的：在定量感覺檢查中，探討不同刺激溫度變化率對(duì)溫度覺閾值的影響。
The threshold of the pressure stimulus for the "respiratory excitatory reflex" was higher than that for the depressor reflex.
本實(shí)驗(yàn)證明在消除頸動(dòng)脈體化學(xué)感受器的影響后，頸動(dòng)脈竇受到擴(kuò)張刺激仍能引起呼吸運(yùn)動(dòng)的反射性興奮反應(yīng)。