Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W2409617527', 'doi': 'https://doi.org/10.1093/sleep/12.4.299', 'title': 'Sleep and Wakefulness in Normal Preadolescent Children', 'display_name': 'Sleep and Wakefulness in Normal Preadolescent Children', 'publication_year': 1989, 'publication_date': '1989-07-01', 'ids': {'openalex': 'https://openalex.org/W2409617527', 'doi': 'https://doi.org/10.1093/sleep/12.4.299', 'mag': '2409617527', 'pmid': 'https://pubmed.ncbi.nlm.nih.gov/2762685'}, 'language': 'en', 'primary_location': {'is_oa': True, 'landing_page_url': 'https://doi.org/10.1093/sleep/12.4.299', 'pdf_url': 'https://academic.oup.com/sleep/article-pdf/12/4/299/13659136/120401.pdf', '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': 'publishedVersion', 'is_accepted': True, 'is_published': True}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['crossref', 'pubmed'], 'open_access': {'is_oa': True, 'oa_status': 'bronze', 'oa_url': 'https://academic.oup.com/sleep/article-pdf/12/4/299/13659136/120401.pdf', 'any_repository_has_fulltext': False}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5031388843', 'display_name': 'Lars Palm', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I187531555', 'display_name': 'Lund University', 'ror': 'https://ror.org/012a77v79', 'country_code': 'SE', 'type': 'education', 'lineage': ['https://openalex.org/I187531555']}], 'countries': ['SE'], 'is_corresponding': True, 'raw_author_name': 'Lars Palm', 'raw_affiliation_strings': ['*Departments of Clinical Neurophysiology, University Hospital, Lund, Sweden', '†Departments of Pediatrics, University Hospital, Lund, Sweden'], 'affiliations': [{'raw_affiliation_string': '†Departments of Pediatrics, University Hospital, Lund, Sweden', 'institution_ids': ['https://openalex.org/I187531555']}, {'raw_affiliation_string': '*Departments of Clinical Neurophysiology, University Hospital, Lund, Sweden', 'institution_ids': ['https://openalex.org/I187531555']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5051022475', 'display_name': 'Elin Persson', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I187531555', 'display_name': 'Lund University', 'ror': 'https://ror.org/012a77v79', 'country_code': 'SE', 'type': 'education', 'lineage': ['https://openalex.org/I187531555']}], 'countries': ['SE'], 'is_corresponding': False, 'raw_author_name': 'Elin Persson', 'raw_affiliation_strings': ['*Departments of Clinical Neurophysiology, University Hospital, Lund, Sweden'], 'affiliations': [{'raw_affiliation_string': '*Departments of Clinical Neurophysiology, University Hospital, Lund, Sweden', 'institution_ids': ['https://openalex.org/I187531555']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5112204641', 'display_name': 'Dan Elmqvist', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I187531555', 'display_name': 'Lund University', 'ror': 'https://ror.org/012a77v79', 'country_code': 'SE', 'type': 'education', 'lineage': ['https://openalex.org/I187531555']}], 'countries': ['SE'], 'is_corresponding': False, 'raw_author_name': 'Dan Elmqvist', 'raw_affiliation_strings': ['*Departments of Clinical Neurophysiology, University Hospital, Lund, Sweden'], 'affiliations': [{'raw_affiliation_string': '*Departments of Clinical Neurophysiology, University Hospital, Lund, Sweden', 'institution_ids': ['https://openalex.org/I187531555']}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5110012312', 'display_name': 'Gösta Blennow', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I187531555', 'display_name': 'Lund University', 'ror': 'https://ror.org/012a77v79', 'country_code': 'SE', 'type': 'education', 'lineage': ['https://openalex.org/I187531555']}], 'countries': ['SE'], 'is_corresponding': False, 'raw_author_name': 'Gösta Blennow', 'raw_affiliation_strings': ['†Departments of Pediatrics, University Hospital, Lund, Sweden'], 'affiliations': [{'raw_affiliation_string': '†Departments of Pediatrics, University Hospital, Lund, Sweden', 'institution_ids': ['https://openalex.org/I187531555']}]}], 'institution_assertions': [], 'countries_distinct_count': 1, 'institutions_distinct_count': 1, 'corresponding_author_ids': ['https://openalex.org/A5031388843'], 'corresponding_institution_ids': ['https://openalex.org/I187531555'], 'apc_list': {'value': 4018, 'currency': 'USD', 'value_usd': 4018, 'provenance': 'doaj'}, 'apc_paid': None, 'fwci': 1.861, 'has_fulltext': True, 'fulltext_origin': 'ngrams', 'cited_by_count': 89, 'citation_normalized_percentile': {'value': 0.918467, 'is_in_top_1_percent': False, 'is_in_top_10_percent': True}, 'cited_by_percentile_year': {'min': 96, 'max': 97}, 'biblio': {'volume': '12', 'issue': '4', 'first_page': '299', 'last_page': '308'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T10316', 'display_name': 'Sleep and related disorders', 'score': 0.999, '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': 0.999, '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': 0.9986, '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/T11373', 'display_name': 'Sleep and Work-Related Fatigue', 'score': 0.9778, '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'}}], 'keywords': [{'id': 'https://openalex.org/keywords/sleep', 'display_name': 'Sleep', 'score': 0.6457094}, {'id': 'https://openalex.org/keywords/sleep-stages', 'display_name': 'Sleep Stages', 'score': 0.58503747}, {'id': 'https://openalex.org/keywords/vigilance', 'display_name': 'Vigilance (psychology)', 'score': 0.4872014}, {'id': 'https://openalex.org/keywords/electrooculography', 'display_name': 'Electrooculography', 'score': 0.41328335}], 'concepts': [{'id': 'https://openalex.org/C110539466', 'wikidata': 'https://www.wikidata.org/wiki/Q3964845', 'display_name': 'Slow-wave sleep', 'level': 3, 'score': 0.6755625}, {'id': 'https://openalex.org/C2777446050', 'wikidata': 'https://www.wikidata.org/wiki/Q1664214', 'display_name': 'Multiple Sleep Latency Test', 'level': 5, 'score': 0.6597191}, {'id': 'https://openalex.org/C2775841894', 'wikidata': 'https://www.wikidata.org/wiki/Q4683692', 'display_name': 'Sleep (system call)', 'level': 2, 'score': 0.6457094}, {'id': 'https://openalex.org/C2910364982', 'wikidata': 'https://www.wikidata.org/wiki/Q35831', 'display_name': 'Sleep Stages', 'level': 4, 'score': 0.58503747}, {'id': 'https://openalex.org/C548259974', 'wikidata': 'https://www.wikidata.org/wiki/Q569965', 'display_name': 'Audiology', 'level': 1, 'score': 0.56901604}, {'id': 'https://openalex.org/C20566671', 'wikidata': 'https://www.wikidata.org/wiki/Q1752878', 'display_name': 'Non-rapid eye movement sleep', 'level': 3, 'score': 0.5689012}, {'id': 'https://openalex.org/C2779320081', 'wikidata': 'https://www.wikidata.org/wiki/Q246710', 'display_name': 'Wakefulness', 'level': 3, 'score': 0.5676614}, {'id': 'https://openalex.org/C63759246', 'wikidata': 'https://www.wikidata.org/wiki/Q7539762', 'display_name': 'Sleep onset', 'level': 3, 'score': 0.51944274}, {'id': 'https://openalex.org/C15744967', 'wikidata': 'https://www.wikidata.org/wiki/Q9418', 'display_name': 'Psychology', 'level': 0, 'score': 0.48820335}, {'id': 'https://openalex.org/C192769605', 'wikidata': 'https://www.wikidata.org/wiki/Q1418914', 'display_name': 'Vigilance (psychology)', 'level': 2, 'score': 0.4872014}, {'id': 'https://openalex.org/C42219234', 'wikidata': 'https://www.wikidata.org/wiki/Q131130', 'display_name': 'Anesthesia', 'level': 1, 'score': 0.48346716}, {'id': 'https://openalex.org/C2778205975', 'wikidata': 'https://www.wikidata.org/wiki/Q1754874', 'display_name': 'Polysomnography', 'level': 3, 'score': 0.45910692}, {'id': 'https://openalex.org/C71924100', 'wikidata': 'https://www.wikidata.org/wiki/Q11190', 'display_name': 'Medicine', 'level': 0, 'score': 0.42981264}, {'id': 'https://openalex.org/C153050134', 'wikidata': 'https://www.wikidata.org/wiki/Q760256', 'display_name': 'Eye movement', 'level': 2, 'score': 0.41986233}, {'id': 'https://openalex.org/C2778681526', 'wikidata': 'https://www.wikidata.org/wiki/Q420647', 'display_name': 'Electrooculography', 'level': 3, 'score': 0.41328335}, {'id': 'https://openalex.org/C82876162', 'wikidata': 'https://www.wikidata.org/wiki/Q17096504', 'display_name': 'Latency (audio)', 'level': 2, 'score': 0.41010138}, {'id': 'https://openalex.org/C1513209611', 'wikidata': 'https://www.wikidata.org/wiki/Q177190', 'display_name': 'Sleep disorder', 'level': 3, 'score': 0.32916594}, {'id': 'https://openalex.org/C2781326671', 'wikidata': 'https://www.wikidata.org/wiki/Q754424', 'display_name': 'Apnea', 'level': 2, 'score': 0.29625028}, {'id': 'https://openalex.org/C522805319', 'wikidata': 'https://www.wikidata.org/wiki/Q179965', 'display_name': 'Electroencephalography', 'level': 2, 'score': 0.29078847}, {'id': 'https://openalex.org/C2781433485', 'wikidata': 'https://www.wikidata.org/wiki/Q3144201', 'display_name': 'Excessive daytime sleepiness', 'level': 4, 'score': 0.28305975}, {'id': 'https://openalex.org/C2781210498', 'wikidata': 'https://www.wikidata.org/wiki/Q1869874', 'display_name': 'Insomnia', 'level': 2, 'score': 0.21729308}, {'id': 'https://openalex.org/C118552586', 'wikidata': 'https://www.wikidata.org/wiki/Q7867', 'display_name': 'Psychiatry', 'level': 1, 'score': 0.1713298}, {'id': 'https://openalex.org/C118487528', 'wikidata': 'https://www.wikidata.org/wiki/Q161437', 'display_name': 'Ophthalmology', 'level': 1, 'score': 0.10795537}, {'id': 'https://openalex.org/C119599485', 'wikidata': 'https://www.wikidata.org/wiki/Q43035', 'display_name': 'Electrical engineering', 'level': 1, 'score': 0.0}, {'id': 'https://openalex.org/C127413603', 'wikidata': 'https://www.wikidata.org/wiki/Q11023', 'display_name': 'Engineering', 'level': 0, 'score': 0.0}, {'id': 'https://openalex.org/C169760540', 'wikidata': 'https://www.wikidata.org/wiki/Q207011', 'display_name': 'Neuroscience', 'level': 1, 'score': 0.0}, {'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}], 'mesh': [{'descriptor_ui': 'D002657', 'descriptor_name': 'Child Development', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': True}, {'descriptor_ui': 'D004569', 'descriptor_name': 'Electroencephalography', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': True}, {'descriptor_ui': 'D012894', 'descriptor_name': 'Sleep Stages', 'qualifier_ui': 'Q000502', 'qualifier_name': 'physiology', 'is_major_topic': True}, {'descriptor_ui': 'D014851', 'descriptor_name': 'Wakefulness', 'qualifier_ui': 'Q000502', 'qualifier_name': 'physiology', 'is_major_topic': True}, {'descriptor_ui': 'D001143', 'descriptor_name': 'Arousal', 'qualifier_ui': 'Q000502', 'qualifier_name': 'physiology', 'is_major_topic': False}, {'descriptor_ui': 'D001143', 'descriptor_name': 'Arousal', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D002540', 'descriptor_name': 'Cerebral Cortex', 'qualifier_ui': 'Q000502', 'qualifier_name': 'physiology', 'is_major_topic': False}, {'descriptor_ui': 'D002540', 'descriptor_name': 'Cerebral Cortex', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D002648', 'descriptor_name': 'Child', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D004569', 'descriptor_name': 'Electroencephalography', 'qualifier_ui': 'Q000295', 'qualifier_name': 'instrumentation', 'is_major_topic': False}, {'descriptor_ui': 'D006801', 'descriptor_name': 'Humans', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D008991', 'descriptor_name': 'Monitoring, Physiologic', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D008991', 'descriptor_name': 'Monitoring, Physiologic', 'qualifier_ui': 'Q000295', 'qualifier_name': 'instrumentation', 'is_major_topic': False}, {'descriptor_ui': 'D011930', 'descriptor_name': 'Reaction Time', 'qualifier_ui': 'Q000502', 'qualifier_name': 'physiology', 'is_major_topic': False}, {'descriptor_ui': 'D011930', 'descriptor_name': 'Reaction Time', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D012016', 'descriptor_name': 'Reference Values', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D012815', 'descriptor_name': 'Signal Processing, Computer-Assisted', 'qualifier_ui': 'Q000295', 'qualifier_name': 'instrumentation', 'is_major_topic': False}, {'descriptor_ui': 'D012815', 'descriptor_name': 'Signal Processing, Computer-Assisted', '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': 'Q000502', 'qualifier_name': 'physiology', 'is_major_topic': False}, {'descriptor_ui': 'D012895', 'descriptor_name': 'Sleep, REM', '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': 2, 'locations': [{'is_oa': True, 'landing_page_url': 'https://doi.org/10.1093/sleep/12.4.299', 'pdf_url': 'https://academic.oup.com/sleep/article-pdf/12/4/299/13659136/120401.pdf', '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': 'publishedVersion', 'is_accepted': True, 'is_published': True}, {'is_oa': False, 'landing_page_url': 'https://pubmed.ncbi.nlm.nih.gov/2762685', '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://doi.org/10.1093/sleep/12.4.299', 'pdf_url': 'https://academic.oup.com/sleep/article-pdf/12/4/299/13659136/120401.pdf', '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': 'publishedVersion', 'is_accepted': True, 'is_published': True}, 'sustainable_development_goals': [{'id': 'https://metadata.un.org/sdg/3', 'score': 0.64, 'display_name': 'Good health and well-being'}], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 0, 'referenced_works': [], 'related_works': ['https://openalex.org/W2799317519', 'https://openalex.org/W2577668486', 'https://openalex.org/W2468549908', 'https://openalex.org/W2409617527', 'https://openalex.org/W2339383267', 'https://openalex.org/W2319772445', 'https://openalex.org/W2275376217', 'https://openalex.org/W2096149130', 'https://openalex.org/W2079867952', 'https://openalex.org/W2050363193'], 'abstract_inverted_index': {'Eighteen': [0], 'healthy': [1, 181], 'children,': [2], '9': [3, 6, 39], 'boys': [4], 'and': [5, 10, 26, 49, 160, 235], 'girls,': [7], 'between': [8, 99], '8': [9], '12': [11], 'years': [12], 'of': [13, 28, 57, 92, 154, 187, 204, 226], 'age': [14, 214, 225], 'were': [15, 64, 74, 96, 135, 219, 238], 'examined': [16], 'with': [17, 152], 'polygraphic': [18], 'sleep': [19, 22, 50, 106, 141, 150, 185, 196, 202, 230, 233], 'records,': [20], 'multiple': [21], 'latency': [23, 186, 203], 'tests': [24], '(MSLTs),': [25], 'measurements': [27], 'reaction': [29, 217, 236], 'times.': [30], 'Sleep': [31], 'was': [32, 52, 107, 120, 143], 'recorded': [33, 90], 'at': [34, 137], 'home': [35], 'on': [36, 81, 192], 'Oxford': [37], 'Medilog': [38], 'channel': [40], 'cassette': [41], 'tape': [42], 'recorders': [43], '(Oxford': [44], 'Medical': [45], 'Systems,': [46], 'Abingdon,': [47], 'U.K.)': [48], 'staging': [51], 'performed': [53, 136], 'from': [54], 'the': [55, 58, 70, 85, 88, 116, 130, 133, 176, 224, 227], 'screen': [56], 'display': [59], 'unit.': [60], 'Two': [61], 'consecutive': [62], 'nights': [63], 'recorded.': [65], 'MSL': [66], 'Twas': [67], 'done': [68], 'in': [69, 109, 145, 165, 180, 212, 241], 'laboratory.': [71], 'The': [72, 139, 216], 'subjects': [73], 'given': [75], '30': [76], 'min': [77, 189], 'to': [78, 113, 129], 'fall': [79], 'asleep': [80], 'four': [82], 'occasions': [83], 'during': [84], 'day': [86], 'after': [87], 'last': [89], 'night': [91, 118], 'sleep.': [93], 'Reaction': [94], 'times': [95, 218, 237], 'measured': [97], 'repeatedly': [98], 'each': [100], 'MSLT': [101, 174], 'trial.': [102], 'More': [103], 'slow': [104], 'wave': [105], 'found': [108], 'this': [110, 126, 166, 213], 'study': [111], 'compared': [112], 'others.': [114], 'Also,': [115], 'first': [117], 'effect': [119], 'slight.': [121], 'It': [122], 'is': [123, 127, 209], 'proposed': [124], 'that': [125, 132], 'due': [128], 'fact': [131], 'recordings': [134], 'home.': [138], 'initial': [140], 'cycle': [142], 'incomplete': [144], 'almost': [146], 'all': [147], 'subjects.': [148, 228], 'A': [149, 184], 'stage': [151], 'traits': [153], 'both': [155], 'rapid': [156], 'eye': [157], 'movement': [158], '(REM)': [159], 'nonREM': [161], 'could': [162], 'be': [163], 'seen': [164, 211], 'cycle,': [167], 'probably': [168], 'representing': [169], 'an': [170], 'abortive': [171], 'REM': [172], 'period.': [173], 'confirmed': [175], 'low': [177], 'daytime': [178, 232], 'sleepiness': [179], 'preadolescent': [182], 'children.': [183, 244], '10': [188], 'or': [190, 194, 198], 'less': [191, 205], 'two': [193], 'more': [195], 'trials,': [197], 'a': [199], 'daily': [200], 'mean': [201], 'than': [206], '20': [207], 'min,': [208], 'rarely': [210], 'group.': [215], 'within': [220], 'normal': [221], 'limits': [222], 'for': [223], 'Nighttime': [229], 'values,': [231], 'latencies,': [234], 'not': [239], 'correlated': [240], 'these': [242], 'normal-sleeping': [243]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2409617527', 'counts_by_year': [{'year': 2024, 'cited_by_count': 4}, {'year': 2023, 'cited_by_count': 2}, {'year': 2022, 'cited_by_count': 1}, {'year': 2021, 'cited_by_count': 1}, {'year': 2020, 'cited_by_count': 1}, {'year': 2019, 'cited_by_count': 3}, {'year': 2018, 'cited_by_count': 1}, {'year': 2017, 'cited_by_count': 2}, {'year': 2015, 'cited_by_count': 1}, {'year': 2014, 'cited_by_count': 2}, {'year': 2013, 'cited_by_count': 4}, {'year': 2012, 'cited_by_count': 7}], 'updated_date': '2024-12-18T02:27:41.733433', 'created_date': '2016-06-24'}