the branch of psychology that uses experimental methods to study psychological issues

a psychologist trained in psychophysics

the branch of science studying the psychological and physiological responses associated with sound (including speech and music).

(psychophysics) the difference between two stimuli that (under properly controlled experimental conditions) is detected as often as it is undetected

(psychophysics) the concept that the magnitude of a subjective sensation increases proportional to the logarithm of the stimulus intensity; based on early work by E. H. Weber

(psychophysics) the concept that the magnitude of a subjective sensation increases proportional to a power of the stimulus intensity

(psychophysics) the concept that a just-noticeable difference in a stimulus is proportional to the magnitude of the original stimulus