the lowest level of stimulation that a person can detect

the lowest level of stimulation that a person can detect

the lowest level of stimulation that a person can detect

the lowest level of stimulation that a person can detect

the lowest level of stimulation that a person can detect

the lowest level of stimulation that a person can detect

The point that must be exceeded to begin producing a given effect or result or to elicit a response, Hence, the place or point of entering or beginning; outset_ as, he is now at the threshold of his argument, The bottom-most part of a doorway that one crosses to enter; a sill