Stimuli that are rare and intrusive are more likely to elicit the classic parietal P300 in REM sleep.
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It has been found that an event related potential across the parieto-central area of the skull that is usually around 300 ms and called P300 is larger after the target stimulus.
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The P300 wave only occurs if the subject is actively engaged in the task of detecting the targets.
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Research to date indicates that P300 can be recorded during the transition to sleep and then reappears in REM sleep.
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Since P300 has been shown to be an attention-dependent cognitive component in wakefulness, one might suppose that it would be absent during sleep-a time in which information processing of external stimuli is commonly thought to be inhibited.
paradigm | Entity Paradigm | Narrative paradigm | device paradigm |