What does limen mean in psychology?

In psychology, "limen" refers to the threshold or point at which a stimulus becomes perceptible to an individual. It is often used in the context of sensory perception, where the limen determines the minimum intensity of a stimulus required for it to be noticed, known as the "absolute threshold." Additionally, it can refer to the difference threshold, which is the minimum change in stimulus intensity needed for a person to detect a difference. Overall, limen is crucial for understanding how we perceive and respond to various stimuli in our environment.