title: All intense bursts of rhythmic activity may not be phase III activity.
mesh_terms: D000818:Animals; D004285:Dogs; D004723:Endorphins / Q000494:pharmacology; D005769:Gastrointestinal Motility; D006801:Humans; D009020:Morphine / Q000494:pharmacology; D010507:Periodicity; D001615:beta-Endorphin
chemical_list: D004723:Endorphins; D001615:beta-Endorphin; D009020:Morphine