Signal Detection Theory: how do you respond to stimuli that come into the environment & that lets the person know how sensitive is someone to a particular environment.
Psychophysics: the level of intensity that you can detect stimuli, handle change, & how psychological factors will influence the way to sense stimuli.
Motivation impacts our ability to notice stimuli
SUMMARY
Sensation: transforming energy from outside stimuli into neural energy
Perception: taking neural energy and creating an image of the outside world
Psychophysics refers to the relationships between physical stimuli and mental phenomena