Scimago Journal & Country Rank

Sleep

Country

United States

Universities and research institutions in United States

Subject Area and Category

Publisher

Oxford University Press

H-Index

207

Publication type

Journals

ISSN

01618105, 15509109

Coverage

1978-2020

Information

Homepage

How to publish in this journal

rszym@ucla.edu

Scope

SLEEP® publishes findings from studies conducted at any level of analysis, including: Genes Molecules Cells Physiology Neural systems and circuits Behavior and cognition Self-report SLEEP® publishes articles that use a wide variety of scientific approaches and address a broad range of topics. These may include, but are not limited to: Basic and neuroscience studies of sleep and circadian mechanisms In vitro and animal models of sleep, circadian rhythms, and human disorders Pre-clinical human investigations, including the measurement and manipulation of sleep and circadian rhythms Studies in clinical or population samples. These may address factors influencing sleep and circadian rhythms (e.g., development and aging, and social and environmental influences) and relationships between sleep, circadian rhythms, health, and disease Clinical trials, epidemiology studies, implementation, and dissemination research. Join the conversation about this journal
Quartiles

The set of journals have been ranked according to their SJR and divided into four equal groups, four quartiles. Q1 (green) comprises the quarter of the journals with the highest values, Q2 (yellow) the second highest values, Q3 (orange) the third highest values and Q4 (red) the lowest values.

CategoryYearQuartile
Neurology (clinical)1999Q1
Neurology (clinical)2000Q1
Neurology (clinical)2001Q1
Neurology (clinical)2002Q1
Neurology (clinical)2003Q1
Neurology (clinical)2004Q1
Neurology (clinical)2005Q1
Neurology (clinical)2006Q1
Neurology (clinical)2007Q1
Neurology (clinical)2008Q1
Neurology (clinical)2009Q1
Neurology (clinical)2010Q1
Neurology (clinical)2011Q1
Neurology (clinical)2012Q1
Neurology (clinical)2013Q1
Neurology (clinical)2014Q1
Neurology (clinical)2015Q1
Neurology (clinical)2016Q1
Neurology (clinical)2017Q1
Neurology (clinical)2018Q1
Neurology (clinical)2019Q1
Neurology (clinical)2020Q1
Physiology (medical)1999Q1
Physiology (medical)2000Q1
Physiology (medical)2001Q1
Physiology (medical)2002Q1
Physiology (medical)2003Q2
Physiology (medical)2004Q1
Physiology (medical)2005Q1
Physiology (medical)2006Q1
Physiology (medical)2007Q1
Physiology (medical)2008Q1
Physiology (medical)2009Q1
Physiology (medical)2010Q1
Physiology (medical)2011Q1
Physiology (medical)2012Q1
Physiology (medical)2013Q1
Physiology (medical)2014Q1
Physiology (medical)2015Q1
Physiology (medical)2016Q1
Physiology (medical)2017Q1
Physiology (medical)2018Q1
Physiology (medical)2019Q1
Physiology (medical)2020Q1
SJR

The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.

YearSJR
19991.178
20001.276
20011.281
20021.197
20031.113
20041.401
20051.651
20062.148
20072.011
20082.235
20092.530
20102.681
20112.407
20122.517
20132.618
20142.434
20152.668
20162.436
20172.370
20182.090
20191.910
20202.222
Total Documents

Evolution of the number of published documents. All types of documents are considered, including citable and non citable documents.

YearDocuments
1999126
2000144
200195
2002101
2003159
2004216
2005222
2006201
2007198
2008199
2009201
2010222
2011234
2012225
2013266
2014235
2015248
2016247
2017251
2018216
2019254
2020246
Citations per document

This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.

Cites per documentYearValue
Cites / Doc. (4 years)19992.371
Cites / Doc. (4 years)20003.185
Cites / Doc. (4 years)20013.519
Cites / Doc. (4 years)20023.487
Cites / Doc. (4 years)20033.785
Cites / Doc. (4 years)20043.731
Cites / Doc. (4 years)20054.785
Cites / Doc. (4 years)20064.825
Cites / Doc. (4 years)20074.466
Cites / Doc. (4 years)20085.106
Cites / Doc. (4 years)20095.554
Cites / Doc. (4 years)20106.512
Cites / Doc. (4 years)20116.163
Cites / Doc. (4 years)20126.144
Cites / Doc. (4 years)20135.608
Cites / Doc. (4 years)20145.074
Cites / Doc. (4 years)20155.051
Cites / Doc. (4 years)20164.652
Cites / Doc. (4 years)20175.001
Cites / Doc. (4 years)20184.738
Cites / Doc. (4 years)20194.939
Cites / Doc. (4 years)20205.150
Cites / Doc. (3 years)19992.371
Cites / Doc. (3 years)20003.196
Cites / Doc. (3 years)20013.269
Cites / Doc. (3 years)20023.564
Cites / Doc. (3 years)20033.065
Cites / Doc. (3 years)20043.800
Cites / Doc. (3 years)20054.670
Cites / Doc. (3 years)20064.737
Cites / Doc. (3 years)20074.319
Cites / Doc. (3 years)20084.831
Cites / Doc. (3 years)20095.652
Cites / Doc. (3 years)20106.470
Cites / Doc. (3 years)20115.559
Cites / Doc. (3 years)20125.592
Cites / Doc. (3 years)20135.167
Cites / Doc. (3 years)20144.640
Cites / Doc. (3 years)20154.840
Cites / Doc. (3 years)20164.529
Cites / Doc. (3 years)20174.947
Cites / Doc. (3 years)20184.425
Cites / Doc. (3 years)20194.517
Cites / Doc. (3 years)20204.896
Cites / Doc. (2 years)19992.187
Cites / Doc. (2 years)20002.719
Cites / Doc. (2 years)20013.270
Cites / Doc. (2 years)20022.690
Cites / Doc. (2 years)20032.893
Cites / Doc. (2 years)20043.692
Cites / Doc. (2 years)20054.387
Cites / Doc. (2 years)20064.400
Cites / Doc. (2 years)20073.813
Cites / Doc. (2 years)20084.777
Cites / Doc. (2 years)20095.463
Cites / Doc. (2 years)20105.560
Cites / Doc. (2 years)20115.035
Cites / Doc. (2 years)20124.936
Cites / Doc. (2 years)20134.464
Cites / Doc. (2 years)20144.014
Cites / Doc. (2 years)20154.495
Cites / Doc. (2 years)20164.377
Cites / Doc. (2 years)20174.461
Cites / Doc. (2 years)20184.038
Cites / Doc. (2 years)20194.109
Cites / Doc. (2 years)20204.413
Total Cites 
Self-Cites

Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years.
Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.

CitesYearValue
Self Cites1999111
Self Cites2000138
Self Cites200192
Self Cites2002115
Self Cites200391
Self Cites2004235
Self Cites2005237
Self Cites2006288
Self Cites2007278
Self Cites2008177
Self Cites2009280
Self Cites2010288
Self Cites2011286
Self Cites2012244
Self Cites2013322
Self Cites2014253
Self Cites2015250
Self Cites2016286
Self Cites2017247
Self Cites2018195
Self Cites2019246
Self Cites2020202
Total Cites19991022
Total Cites20001173
Total Cites20011180
Total Cites20021301
Total Cites20031042
Total Cites20041349
Total Cites20052223
Total Cites20062828
Total Cites20072760
Total Cites20083000
Total Cites20093380
Total Cites20103869
Total Cites20113458
Total Cites20123674
Total Cites20133519
Total Cites20143364
Total Cites20153514
Total Cites20163392
Total Cites20173611
Total Cites20183301
Total Cites20193225
Total Cites20203530
External Cites per Doc 
Cites per Doc

Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years. External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents.

CitesYearValue
External Cites per document19992.261
External Cites per document20003.080
External Cites per document20013.257
External Cites per document20023.478
External Cites per document20032.935
External Cites per document20043.514
External Cites per document20054.953
External Cites per document20065.582
External Cites per document20075.086
External Cites per document20085.749
External Cites per document20096.114
External Cites per document20107.063
External Cites per document20116.319
External Cites per document20126.609
External Cites per document20136.172
External Cites per document20145.636
External Cites per document20155.777
External Cites per document20165.151
External Cites per document20175.470
External Cites per document20184.757
External Cites per document20194.562
External Cites per document20205.042
Cites per document19992.371
Cites per document20003.196
Cites per document20013.269
Cites per document20023.564
Cites per document20033.065
Cites per document20043.800
Cites per document20054.670
Cites per document20064.737
Cites per document20074.319
Cites per document20084.831
Cites per document20095.652
Cites per document20106.470
Cites per document20115.559
Cites per document20125.592
Cites per document20135.167
Cites per document20144.640
Cites per document20154.840
Cites per document20164.529
Cites per document20174.947
Cites per document20184.425
Cites per document20194.517
Cites per document20204.896
% International Collaboration

International Collaboration accounts for the articles that have been produced by researchers from several countries. The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address.

YearInternational Collaboration
19994.76
20002.08
20010.00
20020.99
200313.84
200419.44
200514.86
200623.88
200720.20
200826.13
200923.88
201023.42
201127.35
201224.44
201322.56
201429.36
201526.21
201630.36
201739.44
201840.74
201935.43
202036.99
Citable documents 
Non-citable documents

Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.

DocumentsYearValue
Non-citable documents199928
Non-citable documents200031
Non-citable documents200127
Non-citable documents200224
Non-citable documents200316
Non-citable documents200438
Non-citable documents200575
Non-citable documents2006142
Non-citable documents2007151
Non-citable documents2008130
Non-citable documents200991
Non-citable documents201091
Non-citable documents2011120
Non-citable documents2012138
Non-citable documents2013163
Non-citable documents2014173
Non-citable documents2015161
Non-citable documents2016146
Non-citable documents2017115
Non-citable documents201893
Non-citable documents201961
Non-citable documents202061
Citable documents1999403
Citable documents2000336
Citable documents2001334
Citable documents2002341
Citable documents2003324
Citable documents2004317
Citable documents2005401
Citable documents2006455
Citable documents2007488
Citable documents2008491
Citable documents2009507
Citable documents2010507
Citable documents2011502
Citable documents2012519
Citable documents2013518
Citable documents2014552
Citable documents2015565
Citable documents2016603
Citable documents2017615
Citable documents2018653
Citable documents2019653
Citable documents2020660
Cited documents 
Uncited documents

Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. those not cited during the following year.

DocumentsYearValue
Uncited documents1999131
Uncited documents200098
Uncited documents200192
Uncited documents200280
Uncited documents200374
Uncited documents200463
Uncited documents200590
Uncited documents2006134
Uncited documents2007144
Uncited documents2008134
Uncited documents200984
Uncited documents201080
Uncited documents201198
Uncited documents201295
Uncited documents2013122
Uncited documents2014158
Uncited documents2015139
Uncited documents2016138
Uncited documents2017103
Uncited documents2018107
Uncited documents201992
Uncited documents202093
Cited documents1999300
Cited documents2000269
Cited documents2001269
Cited documents2002285
Cited documents2003266
Cited documents2004292
Cited documents2005386
Cited documents2006463
Cited documents2007495
Cited documents2008487
Cited documents2009514
Cited documents2010518
Cited documents2011524
Cited documents2012562
Cited documents2013559
Cited documents2014567
Cited documents2015587
Cited documents2016611
Cited documents2017627
Cited documents2018639
Cited documents2019622
Cited documents2020628
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