stimulus threshold

例句：

1. 1.The study found that the stimulus threshold for detecting a change in light intensity is very low.
   研究发现，检测光线强度变化的刺激阈值非常低。
2. 2. The researchers set the stimulus threshold at a level just below the subject's pain threshold.
   研究人员将刺激阈值设定在刚好低于受试者疼痛阈值的水平。
3. 3. The experiment aimed to determine the stimulus threshold for the human eye.
   实验旨在确定人类眼睛的刺激阈值。