{'fraction_non_alphanumeric': 0.019148936170212766, 'fraction_numerical': 0.0, 'mean_word_length': 5.28, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
History of Serotonin and Serotonin Disorders

Recurring cycles of scientific interest in serotonin over past decades, with concomitant waves of new findings, reports, symposia and reviews, literally defy the imagination and challenge description. We have elected to divide this saga of serotonin into four fairly distinct periods (Eras I-IV) and by necessity have been selective in our choices of subjects and when convenient have risked being hoist with our own petard.