Final answer:
EEG studies of people with narcolepsy reveal abnormalities in brain wave activity, including increased alpha waves during wakefulness, decreased delta waves during deep sleep, and excessive theta waves during drowsiness. There are also abnormalities in the REM sleep pattern.
Step-by-step explanation:
EEG studies of people suffering from narcolepsy reveal several abnormalities in brain wave activity. These abnormalities include increased alpha waves during wakefulness, decreased delta waves during deep sleep, and excessive theta waves during drowsiness. However, the studies also show abnormalities in the REM sleep pattern. During REM sleep, the brain waves of individuals with narcolepsy display patterns that are similar to those observed when a person is awake.