Gerald for is after and Lyndon johnson was before
Answer:below Uchenna's absolute threshold
Explanation:An absolute threshold refers to the lowest level of stimulus that we can detect half the time.
It is used in neuroscience and during experiment in order to see what level of stimulus is an individual able to detect using their sense this involves detecting sound,taste,sight,smell and touch. For example for sound detection , a person hearing may vary with varying levels of volume, the lowest volume that one is able to hear
half the times is called absolute threshold.
