Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W2460546465', 'doi': 'https://doi.org/10.1016/s0140-6736(64)90999-7', 'title': 'Age and Sleep', 'display_name': 'Age and Sleep', 'publication_year': 1964, 'publication_date': '1964-11-01', 'ids': {'openalex': 'https://openalex.org/W2460546465', 'doi': 'https://doi.org/10.1016/s0140-6736(64)90999-7', 'mag': '2460546465', 'pmid': 'https://pubmed.ncbi.nlm.nih.gov/14206022'}, 'language': None, 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1016/s0140-6736(64)90999-7', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4394735484', 'display_name': '\x98The \x9cLancet', 'issn_l': '0099-5355', 'issn': ['0099-5355'], 'is_oa': False, 'is_in_doaj': False, 'is_core': False, 'host_organization': None, 'host_organization_name': None, 'host_organization_lineage': [], 'host_organization_lineage_names': [], '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': False, 'oa_status': 'closed', 'oa_url': None, 'any_repository_has_fulltext': False}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5054938101', 'display_name': 'D Mattingly', 'orcid': 'https://orcid.org/0000-0002-8285-459X'}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'D MATTINGLY', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5058690991', 'display_name': 'P. M. Dennis', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'P M DENNIS', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5020277338', 'display_name': 'Jacqueline Pearson', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'J PEARSON', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5016379737', 'display_name': 'C. L. Cope', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'C L COPE', 'raw_affiliation_strings': [], 'affiliations': []}], 'institution_assertions': [], 'countries_distinct_count': 0, 'institutions_distinct_count': 0, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': None, 'apc_paid': None, 'fwci': 4.295, 'has_fulltext': True, 'fulltext_origin': 'ngrams', 'cited_by_count': 254, 'citation_normalized_percentile': {'value': 0.981317, 'is_in_top_1_percent': False, 'is_in_top_10_percent': True}, 'cited_by_percentile_year': {'min': 99, 'max': 100}, 'biblio': {'volume': '284', 'issue': '7368', 'first_page': '1053', 'last_page': '1054'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T10316', 'display_name': 'Sleep and related disorders', 'score': 0.2282, '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'}}, 'topics': [{'id': 'https://openalex.org/T10316', 'display_name': 'Sleep and related disorders', 'score': 0.2282, '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/T10985', 'display_name': 'Sleep and Wakefulness Research', 'score': 0.2226, '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'}}], 'keywords': [{'id': 'https://openalex.org/keywords/sleep', 'display_name': 'Sleep', 'score': 0.56399435}], 'concepts': [{'id': 'https://openalex.org/C2775841894', 'wikidata': 'https://www.wikidata.org/wiki/Q4683692', 'display_name': 'Sleep (system call)', 'level': 2, 'score': 0.56399435}, {'id': 'https://openalex.org/C71924100', 'wikidata': 'https://www.wikidata.org/wiki/Q11190', 'display_name': 'Medicine', 'level': 0, 'score': 0.4884571}, {'id': 'https://openalex.org/C41008148', 'wikidata': 'https://www.wikidata.org/wiki/Q21198', 'display_name': 'Computer science', 'level': 0, 'score': 0.12954614}, {'id': 'https://openalex.org/C111919701', 'wikidata': 'https://www.wikidata.org/wiki/Q9135', 'display_name': 'Operating system', 'level': 1, 'score': 0.0}], 'mesh': [{'descriptor_ui': 'D012890', 'descriptor_name': 'Sleep', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': True}, {'descriptor_ui': 'D012893', 'descriptor_name': 'Sleep Wake Disorders', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': True}, {'descriptor_ui': 'D006801', 'descriptor_name': 'Humans', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}], 'locations_count': 2, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.1016/s0140-6736(64)90999-7', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4394735484', 'display_name': '\x98The \x9cLancet', 'issn_l': '0099-5355', 'issn': ['0099-5355'], 'is_oa': False, 'is_in_doaj': False, 'is_core': False, 'host_organization': None, 'host_organization_name': None, 'host_organization_lineage': [], 'host_organization_lineage_names': [], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, {'is_oa': False, 'landing_page_url': 'https://pubmed.ncbi.nlm.nih.gov/14206022', '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': None, 'sustainable_development_goals': [], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 6, 'referenced_works': ['https://openalex.org/W1976281869', 'https://openalex.org/W2039548737', 'https://openalex.org/W2051672372', 'https://openalex.org/W2077547034', 'https://openalex.org/W2330628190', 'https://openalex.org/W2747195489'], 'related_works': ['https://openalex.org/W4389568370', 'https://openalex.org/W3108674512', 'https://openalex.org/W3032375762', 'https://openalex.org/W3031052312', 'https://openalex.org/W2748952813', 'https://openalex.org/W2148612803', 'https://openalex.org/W2080531066', 'https://openalex.org/W1995515455', 'https://openalex.org/W1506200166', 'https://openalex.org/W1489783725'], 'abstract_inverted_index': None, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2460546465', 'counts_by_year': [{'year': 2021, 'cited_by_count': 1}, {'year': 2020, 'cited_by_count': 1}, {'year': 2019, 'cited_by_count': 2}, {'year': 2018, 'cited_by_count': 1}, {'year': 2017, 'cited_by_count': 2}, {'year': 2016, 'cited_by_count': 8}, {'year': 2015, 'cited_by_count': 5}, {'year': 2014, 'cited_by_count': 8}, {'year': 2013, 'cited_by_count': 6}, {'year': 2012, 'cited_by_count': 4}], 'updated_date': '2024-12-16T15:01:32.741899', 'created_date': '2016-07-22'}