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Psychophysics is a branch of psychology that focuses on the relationship between physical stimuli and our psychological experiences. It explores how our sensory systems detect and interpret stimuli from the environment.
The minimum level of stimulus intensity required for it to be detected by a person's sensory system.
The smallest difference between two stimuli that can be detected 50% of the time by a person's sensory system.
A theory that examines how internal and external factors influence our ability to detect signals or stimuli amidst background noise.