GRE Reading Comprehension: Maggoosh-GRE阅读Maggoosh - 1P1LV05D2XRXKRS4M

Which of the following is NOT supported by the passage? A. Subjects only exhibit a learned response to a pleasant or unpleasant smell upon waking. B. The conditioning observed in the experiment tends to involve, almost exclusively, higher brain areas. C. The process of learning during sleep includes a combination of both REM and non-REM sleep.