psychophysics

/ˌsaɪkoʊˈfɪzɪks/
noun
  1. The branch of psychology that deals with the relationship between physical stimuli and the sensations and perceptions they produce.
    • Using psychophysics, researchers can measure the smallest amount of sugar a person can taste.
    • Psychophysics helps us understand why a whisper sounds much quieter than a normal conversation.
    • The course on psychophysics covered how the human eye detects different colors of light.
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