Moderate

Which of the following is NOT an example of a genuine after-effect?

Correct answer: B. After listening to a high tone for a while, a medium auditory tone appears higher

  • A. After running your fingers over fine sandpaper, medium sandpaper feels coarser (and vice versa)
  • B. After listening to a high tone for a while, a medium auditory tone appears higher
  • C. Holding your hand under running cold (or hot) water before testing the temperature of baby's bath water will lead you to misperceive how comfortable the water will be for the baby
  • D. After eating chocolate, orange juice tastes more tart

Explanation

After adapting to a high tone, a medium tone is generally perceived as lower, not higher, because of auditory pitch adaptation. The other examples describe genuine sensory after-effects or contrast effects across touch, temperature and taste.

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