Sensation and Perception

An online crossword puzzle with 6 words. Play it free at AgileCrosswords.com.

Clues

minimum amount a stimulus must change in order for the change in sensation to be 50% of the time
minimum magnitude of a stimulus that can be reliably discriminated from no stimulus at all
constant of proportionality
describes the relationship between psychological and physical events
outer covering of eye
transparent front surface of eye where light enters & rays are bent inward