Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W159916630', 'doi': 'https://doi.org/10.1093/sleep/32.9.1229', 'title': 'Narcolepsy with Long Sleep Time: a Specific Entity?', 'display_name': 'Narcolepsy with Long Sleep Time: a Specific Entity?', 'publication_year': 2009, 'publication_date': '2009-09-01', 'ids': {'openalex': 'https://openalex.org/W159916630', 'doi': 'https://doi.org/10.1093/sleep/32.9.1229', 'mag': '159916630', 'pmid': 'https://pubmed.ncbi.nlm.nih.gov/19750928', 'pmcid': 'https://www.ncbi.nlm.nih.gov/pmc/articles/2737581'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1093/sleep/32.9.1229', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S42921845', 'display_name': 'SLEEP', 'issn_l': '0161-8105', 'issn': ['0161-8105', '1550-9109'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310311648', 'host_organization_name': 'Oxford University Press', 'host_organization_lineage': ['https://openalex.org/P4310311647', 'https://openalex.org/P4310311648'], 'host_organization_lineage_names': ['University of Oxford', 'Oxford University Press'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['crossref', 'pubmed'], 'open_access': {'is_oa': True, 'oa_status': 'green', 'oa_url': 'https://europepmc.org/articles/pmc2737581?pdf=render', 'any_repository_has_fulltext': True}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5109048028', 'display_name': 'Cyrille Vernet', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I154526488', 'display_name': 'Inserm', 'ror': 'https://ror.org/02vjkv261', 'country_code': 'FR', 'type': 'government', 'lineage': ['https://openalex.org/I154526488']}, {'id': 'https://openalex.org/I39804081', 'display_name': 'Sorbonne Université', 'ror': 'https://ror.org/02en5vm52', 'country_code': 'FR', 'type': 'education', 'lineage': ['https://openalex.org/I39804081']}], 'countries': ['FR'], 'is_corresponding': False, 'raw_author_name': 'Cyrille Vernet', 'raw_affiliation_strings': ['Sleep disorder unit, National reference center for narcolepsy and hypersomnia, Pitié-Salpêtrière hospital, Paris 6 University and INSERM UMRS 975, Paris, France.'], 'affiliations': [{'raw_affiliation_string': 'Sleep disorder unit, National reference center for narcolepsy and hypersomnia, Pitié-Salpêtrière hospital, Paris 6 University and INSERM UMRS 975, Paris, France.', 'institution_ids': ['https://openalex.org/I154526488', 'https://openalex.org/I39804081']}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5069591541', 'display_name': 'Isabelle Arnulf', 'orcid': 'https://orcid.org/0000-0002-2240-2516'}, 'institutions': [{'id': 'https://openalex.org/I154526488', 'display_name': 'Inserm', 'ror': 'https://ror.org/02vjkv261', 'country_code': 'FR', 'type': 'government', 'lineage': ['https://openalex.org/I154526488']}, {'id': 'https://openalex.org/I39804081', 'display_name': 'Sorbonne Université', 'ror': 'https://ror.org/02en5vm52', 'country_code': 'FR', 'type': 'education', 'lineage': ['https://openalex.org/I39804081']}], 'countries': ['FR'], 'is_corresponding': False, 'raw_author_name': 'Isabelle Arnulf', 'raw_affiliation_strings': ['Sleep disorder unit, National reference center for narcolepsy and hypersomnia, Pitié-Salpêtrière hospital, Paris 6 University and INSERM UMRS 975, Paris, France.'], 'affiliations': [{'raw_affiliation_string': 'Sleep disorder unit, National reference center for narcolepsy and hypersomnia, Pitié-Salpêtrière hospital, Paris 6 University and INSERM UMRS 975, Paris, France.', 'institution_ids': ['https://openalex.org/I154526488', 'https://openalex.org/I39804081']}]}], 'institution_assertions': [], 'countries_distinct_count': 1, 'institutions_distinct_count': 2, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': {'value': 4018, 'currency': 'USD', 'value_usd': 4018, 'provenance': 'doaj'}, 'apc_paid': None, 'fwci': 1.071, 'has_fulltext': True, 'fulltext_origin': 'pdf', 'cited_by_count': 48, 'citation_normalized_percentile': {'value': 0.843038, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 94, 'max': 95}, 'biblio': {'volume': '32', 'issue': '9', 'first_page': '1229', 'last_page': '1235'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T10985', 'display_name': 'Sleep and Wakefulness Research', 'score': 1.0, 'subfield': {'id': 'https://openalex.org/subfields/2805', 'display_name': 'Cognitive Neuroscience'}, 'field': {'id': 'https://openalex.org/fields/28', 'display_name': 'Neuroscience'}, 'domain': {'id': 'https://openalex.org/domains/1', 'display_name': 'Life Sciences'}}, 'topics': [{'id': 'https://openalex.org/T10985', 'display_name': 'Sleep and Wakefulness Research', 'score': 1.0, 'subfield': {'id': 'https://openalex.org/subfields/2805', 'display_name': 'Cognitive Neuroscience'}, 'field': {'id': 'https://openalex.org/fields/28', 'display_name': 'Neuroscience'}, 'domain': {'id': 'https://openalex.org/domains/1', 'display_name': 'Life Sciences'}}, {'id': 'https://openalex.org/T10316', 'display_name': 'Sleep and related disorders', 'score': 0.9951, 'subfield': {'id': 'https://openalex.org/subfields/3205', 'display_name': 'Experimental and Cognitive Psychology'}, 'field': {'id': 'https://openalex.org/fields/32', 'display_name': 'Psychology'}, 'domain': {'id': 'https://openalex.org/domains/2', 'display_name': 'Social Sciences'}}, {'id': 'https://openalex.org/T10342', 'display_name': 'Circadian rhythm and melatonin', 'score': 0.9542, 'subfield': {'id': 'https://openalex.org/subfields/2807', 'display_name': 'Endocrine and Autonomic Systems'}, 'field': {'id': 'https://openalex.org/fields/28', 'display_name': 'Neuroscience'}, 'domain': {'id': 'https://openalex.org/domains/1', 'display_name': 'Life Sciences'}}], 'keywords': [{'id': 'https://openalex.org/keywords/sleep', 'display_name': 'Sleep', 'score': 0.5554503}], 'concepts': [{'id': 'https://openalex.org/C2779494582', 'wikidata': 'https://www.wikidata.org/wiki/Q189561', 'display_name': 'Narcolepsy', 'level': 3, 'score': 0.9781095}, {'id': 'https://openalex.org/C2780163352', 'wikidata': 'https://www.wikidata.org/wiki/Q944473', 'display_name': 'Cataplexy', 'level': 4, 'score': 0.76751244}, {'id': 'https://openalex.org/C122980154', 'wikidata': 'https://www.wikidata.org/wiki/Q205555', 'display_name': 'Feeling', 'level': 2, 'score': 0.55712914}, {'id': 'https://openalex.org/C2775841894', 'wikidata': 'https://www.wikidata.org/wiki/Q4683692', 'display_name': 'Sleep (system call)', 'level': 2, 'score': 0.5554503}, {'id': 'https://openalex.org/C2777446050', 'wikidata': 'https://www.wikidata.org/wiki/Q1664214', 'display_name': 'Multiple Sleep Latency Test', 'level': 5, 'score': 0.4835129}, {'id': 'https://openalex.org/C1513209611', 'wikidata': 'https://www.wikidata.org/wiki/Q177190', 'display_name': 'Sleep disorder', 'level': 3, 'score': 0.47273102}, {'id': 'https://openalex.org/C71924100', 'wikidata': 'https://www.wikidata.org/wiki/Q11190', 'display_name': 'Medicine', 'level': 0, 'score': 0.45546138}, {'id': 'https://openalex.org/C15744967', 'wikidata': 'https://www.wikidata.org/wiki/Q9418', 'display_name': 'Psychology', 'level': 0, 'score': 0.44726247}, {'id': 'https://openalex.org/C2778205975', 'wikidata': 'https://www.wikidata.org/wiki/Q1754874', 'display_name': 'Polysomnography', 'level': 3, 'score': 0.42287445}, {'id': 'https://openalex.org/C118552586', 'wikidata': 'https://www.wikidata.org/wiki/Q7867', 'display_name': 'Psychiatry', 'level': 1, 'score': 0.39639854}, {'id': 'https://openalex.org/C187212893', 'wikidata': 'https://www.wikidata.org/wiki/Q123028', 'display_name': 'Pediatrics', 'level': 1, 'score': 0.3741333}, {'id': 'https://openalex.org/C2781210498', 'wikidata': 'https://www.wikidata.org/wiki/Q1869874', 'display_name': 'Insomnia', 'level': 2, 'score': 0.33450007}, {'id': 'https://openalex.org/C2781433485', 'wikidata': 'https://www.wikidata.org/wiki/Q3144201', 'display_name': 'Excessive daytime sleepiness', 'level': 4, 'score': 0.23915982}, {'id': 'https://openalex.org/C2780714222', 'wikidata': 'https://www.wikidata.org/wiki/Q410441', 'display_name': 'Modafinil', 'level': 2, 'score': 0.21497473}, {'id': 'https://openalex.org/C522805319', 'wikidata': 'https://www.wikidata.org/wiki/Q179965', 'display_name': 'Electroencephalography', 'level': 2, 'score': 0.09107435}, {'id': 'https://openalex.org/C41008148', 'wikidata': 'https://www.wikidata.org/wiki/Q21198', 'display_name': 'Computer science', 'level': 0, 'score': 0.0}, {'id': 'https://openalex.org/C111919701', 'wikidata': 'https://www.wikidata.org/wiki/Q9135', 'display_name': 'Operating system', 'level': 1, 'score': 0.0}, {'id': 'https://openalex.org/C77805123', 'wikidata': 'https://www.wikidata.org/wiki/Q161272', 'display_name': 'Social psychology', 'level': 1, 'score': 0.0}], 'mesh': [{'descriptor_ui': 'D009290', 'descriptor_name': 'Narcolepsy', 'qualifier_ui': 'Q000175', 'qualifier_name': 'diagnosis', 'is_major_topic': True}, {'descriptor_ui': 'D000328', 'descriptor_name': 'Adult', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D015331', 'descriptor_name': 'Cohort Studies', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D015897', 'descriptor_name': 'Comorbidity', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D003937', 'descriptor_name': 'Diagnosis, Differential', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D006970', 'descriptor_name': 'Disorders of Excessive Somnolence', 'qualifier_ui': 'Q000175', 'qualifier_name': 'diagnosis', 'is_major_topic': False}, {'descriptor_ui': 'D005260', 'descriptor_name': 'Female', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D006680', 'descriptor_name': 'HLA Antigens', 'qualifier_ui': 'Q000032', 'qualifier_name': 'analysis', 'is_major_topic': False}, {'descriptor_ui': 'D006801', 'descriptor_name': 'Humans', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D007407', 'descriptor_name': 'Interviews as Topic', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D008297', 'descriptor_name': 'Male', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D017286', 'descriptor_name': 'Polysomnography', 'qualifier_ui': 'Q000379', 'qualifier_name': 'methods', 'is_major_topic': False}, {'descriptor_ui': 'D011446', 'descriptor_name': 'Prospective Studies', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D012894', 'descriptor_name': 'Sleep Stages', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D012895', 'descriptor_name': 'Sleep, REM', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D011795', 'descriptor_name': 'Surveys and Questionnaires', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D014851', 'descriptor_name': 'Wakefulness', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}], 'locations_count': 4, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.1093/sleep/32.9.1229', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S42921845', 'display_name': 'SLEEP', 'issn_l': '0161-8105', 'issn': ['0161-8105', '1550-9109'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310311648', 'host_organization_name': 'Oxford University Press', 'host_organization_lineage': ['https://openalex.org/P4310311647', 'https://openalex.org/P4310311648'], 'host_organization_lineage_names': ['University of Oxford', 'Oxford University Press'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, {'is_oa': True, 'landing_page_url': 'https://europepmc.org/articles/pmc2737581', 'pdf_url': 'https://europepmc.org/articles/pmc2737581?pdf=render', 'source': {'id': 'https://openalex.org/S4306400806', 'display_name': 'Europe PMC (PubMed Central)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1303153112', 'host_organization_name': 'European Bioinformatics Institute', 'host_organization_lineage': ['https://openalex.org/I1303153112'], 'host_organization_lineage_names': ['European Bioinformatics Institute'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'publishedVersion', 'is_accepted': True, 'is_published': True}, {'is_oa': True, 'landing_page_url': 'https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2737581', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S2764455111', 'display_name': 'PubMed Central', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1299303238', 'host_organization_name': 'National Institutes of Health', 'host_organization_lineage': ['https://openalex.org/I1299303238'], 'host_organization_lineage_names': ['National Institutes of Health'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'publishedVersion', 'is_accepted': True, 'is_published': True}, {'is_oa': False, 'landing_page_url': 'https://pubmed.ncbi.nlm.nih.gov/19750928', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4306525036', 'display_name': 'PubMed', 'issn_l': None, 'issn': None, 'is_oa': False, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1299303238', 'host_organization_name': 'National Institutes of Health', 'host_organization_lineage': ['https://openalex.org/I1299303238'], 'host_organization_lineage_names': ['National Institutes of Health'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}], 'best_oa_location': {'is_oa': True, 'landing_page_url': 'https://europepmc.org/articles/pmc2737581', 'pdf_url': 'https://europepmc.org/articles/pmc2737581?pdf=render', 'source': {'id': 'https://openalex.org/S4306400806', 'display_name': 'Europe PMC (PubMed Central)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1303153112', 'host_organization_name': 'European Bioinformatics Institute', 'host_organization_lineage': ['https://openalex.org/I1303153112'], 'host_organization_lineage_names': ['European Bioinformatics Institute'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'publishedVersion', 'is_accepted': True, 'is_published': True}, 'sustainable_development_goals': [{'display_name': 'Good health and well-being', 'id': 'https://metadata.un.org/sdg/3', 'score': 0.7}], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 35, 'referenced_works': ['https://openalex.org/W1486366951', 'https://openalex.org/W1493410983', 'https://openalex.org/W1511275384', 'https://openalex.org/W1533063439', 'https://openalex.org/W1845447069', 'https://openalex.org/W197066864', 'https://openalex.org/W1985309260', 'https://openalex.org/W1990583835', 'https://openalex.org/W1996118183', 'https://openalex.org/W2027429673', 'https://openalex.org/W2036911899', 'https://openalex.org/W2037374696', 'https://openalex.org/W2044635723', 'https://openalex.org/W2054493900', 'https://openalex.org/W2079731894', 'https://openalex.org/W2086598729', 'https://openalex.org/W2088680559', 'https://openalex.org/W2114211541', 'https://openalex.org/W2114242035', 'https://openalex.org/W2131265935', 'https://openalex.org/W2148493378', 'https://openalex.org/W2159953069', 'https://openalex.org/W2166281097', 'https://openalex.org/W2334875551', 'https://openalex.org/W2409487943', 'https://openalex.org/W2419408570', 'https://openalex.org/W2520837860', 'https://openalex.org/W2557901763', 'https://openalex.org/W3022302886', 'https://openalex.org/W4246370350', 'https://openalex.org/W4248046254', 'https://openalex.org/W4249811109', 'https://openalex.org/W4298057029', 'https://openalex.org/W4300525701', 'https://openalex.org/W4300927816'], 'related_works': ['https://openalex.org/W4220788460', 'https://openalex.org/W2401803076', 'https://openalex.org/W2142801163', 'https://openalex.org/W2106670492', 'https://openalex.org/W2097842946', 'https://openalex.org/W2090971663', 'https://openalex.org/W2089911845', 'https://openalex.org/W1985076823', 'https://openalex.org/W1809738934', 'https://openalex.org/W1486715685'], 'abstract_inverted_index': {'The': [0, 202], 'classical': [1], 'narcolepsy': [2, 43, 197, 222], 'patient': [3], 'reports': [4], 'intense': [5], 'feelings': [6], 'of': [7, 42, 54, 141, 204, 213, 220], 'sleepiness': [8], '(with/out': [9], 'cataplexy),': [10], 'normal': [11, 163], 'or': [12], 'disrupted': [13], 'nighttime': [14], 'sleep,': [15], 'and': [16, 19, 37, 83, 98, 103, 122, 138, 156, 176, 185, 199, 225, 231], 'takes': [17], 'short': [18, 152], 'restorative': [20], 'naps.': [21], 'However,': [22, 167], 'with': [23, 32, 44, 79, 94, 129, 162, 206, 240], 'long-term': [24], 'monitoring,': [25], 'we': [26], 'identified': [27], 'some': [28], 'narcoleptics': [29, 56, 78, 161, 205], 'resembling': [30], 'patients': [31], 'idiopathic': [33, 226], 'hypersomnia.': [34], 'To': [35], 'isolate': [36], 'describe': [38], 'a': [39, 67, 134, 207, 238], 'new': [40], 'subtype': [41], 'long': [45, 68, 88, 95, 130, 208], 'sleep': [46, 69, 89, 96, 119, 126, 131, 143, 147, 154, 164, 171, 178, 209, 229], 'time).': [47], 'University': [48], 'Hospital': [49], 'Controlled,': [50], 'prospective': [51], 'cohort': [52], 'Out': [53], '160': [55], 'newly': [57], 'diagnosed': [58], 'within': [59], 'the': [60, 218], 'past': [61], '3': [62], 'years,': [63], '29': [64], '(18%)': [65], 'had': [66, 133, 169, 195], 'time': [70, 90, 97, 132, 165, 172, 210, 230], '(more': [71], 'than': [72], '11': [73], 'h/24': [74], 'h).': [75], 'We': [76], 'compared': [77], '(n': [80, 85], '=': [81, 86], '23)': [82], 'without': [84], '29)': [87], 'to': [91], '25': [92], 'hypersomniacs': [93], '20': [99], 'healthy': [100], 'subjects.': [101], 'Patients': [102], 'controls': [104], 'underwent': [105], 'face-to': [106], 'face': [107], 'interviews,': [108], 'questionnaires,': [109], 'human': [110], 'leukocyte': [111], 'antigen': [112], '(HLA)': [113], 'genotype,': [114], 'an': [115], 'overnight': [116], 'polysomnography,': [117], 'multiple': [118, 146, 241], 'latency': [120], 'tests,': [121], '24-h': [123], 'ad': [124], 'libitum': [125], 'monitoring.': [127], 'Narcoleptics': [128], 'similar': [135, 139], 'disease': [136], 'course': [137], 'frequencies': [140], 'cataplexy,': [142], 'paralysis,': [144], 'hallucinations,': [145], 'onset': [148], 'in': [149], 'REM': [150], 'periods,': [151], 'mean': [153], 'latencies,': [155], 'HLA': [157], 'DQB1*0602': [158], 'positivity': [159], 'as': [160], 'did.': [166], 'they': [168, 235], 'longer': [170], 'during': [173], '24': [174], 'h,': [175], 'higher': [177], 'efficiency,': [179], 'lower': [180], 'Epworth': [181], 'Sleepiness': [182], 'Scale': [183], 'scores,': [184], 'reported': [186], 'their': [187], 'naps': [188], 'were': [189], 'more': [190], 'often': [191], 'unrefreshing.': [192], 'Only': [193], '3/23': [194], 'core': [196], '(HLA': [198], 'cataplexy': [200], 'positive).': [201], 'subgroup': [203], 'comprises': [211], '18%': [212], 'narcoleptics.': [214], 'Their': [215], 'symptoms': [216], 'combine': [217], 'disabilities': [219], 'both': [221], '(severe': [223], 'sleepiness)': [224], 'hypersomnia': [227], '(long': [228], 'unrefreshing': [232], 'naps).': [233], 'Thus,': [234], 'may': [236], 'constitute': [237], 'group': [239], 'arousal': [242], 'system': [243], 'dysfunctions.': [244]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W159916630', 'counts_by_year': [{'year': 2024, 'cited_by_count': 4}, {'year': 2023, 'cited_by_count': 3}, {'year': 2022, 'cited_by_count': 5}, {'year': 2021, 'cited_by_count': 7}, {'year': 2020, 'cited_by_count': 3}, {'year': 2019, 'cited_by_count': 1}, {'year': 2017, 'cited_by_count': 3}, {'year': 2016, 'cited_by_count': 5}, {'year': 2015, 'cited_by_count': 3}, {'year': 2014, 'cited_by_count': 1}, {'year': 2013, 'cited_by_count': 3}, {'year': 2012, 'cited_by_count': 3}], 'updated_date': '2024-12-13T17:20:28.288205', 'created_date': '2016-06-24'}