ImpaQ Ecosystem•Clarivate, Scopus & CORE Data
Clarivate WoS 2024 / 2025 Data
IMPAQ
WoS ESCI Q4Scopus Q4SCImago #20,486Hybrid

Somnologie

Acronym:ssus
•
Identifier (ISSN):1432-9123(Print)/1439-054X(Online)
•
Publisher:Springer Nature
Clarivate JCR Index Advisory: Active (ESCI)
Clarivate IF (2026)
0.8↑ +0.3
Journal Impact Factor
IF Trend↓
WoS Quartile
Q4
WoS ESCIJCR Quartile
Clarivate WoS JCR
WoS Categories↓
JCR Release Date: 2026-06-17

Impact Factor Trend (2023–2026)

Clarivate IF trend for Somnologie

WoS Q4
01121.420230.620240.520250.82026
Annual Impact Factor Metric
Current (2026):0.8
Scopus SJR & RankScopus Q4
0.225
#20,486

SCImago Journal Rank citation prestige weighting

Scopus Year: 2025
H-Index (2025)
32

32 papers with at least that number of citations each

WoS: ESCIQ4
Self-Citation Rate16.7%
Safe Level (< 15%)Warning Level (> 20%)
Self-citation below 15% indicates strong scholarly independence.
Volume & Open AccessHybrid
30articles/year
59.81% Gold OA•80% Original Research

Aims & Scope

Die Zeitschrift Somnologie ist das offizielle Organ der Deutschen Gesellschaft für Schlafforschung und Schlafmedizin (DGSM), der Österreichischen Gesellschaft für Schlafmedizin und Schlafforschung (ÖGSM) und der Schweizerischen Gesellschaft für Schlafforschung, Schlafmedizin und Chronobiologie (SGSSC). Auf der Basis von aktuellen, klinisch relevanten Forschungsergebnissen befasst sich die Somnologie mit der Ätiologie, Pathophysiologie, Differentialdiagnostik und Therapie der verschiedenen Schlafstörungen. Eine wissenschaftlich hochqualifizierte Analyse der Ätiologie, Pathophysiologie, Epidemiologie, Diagnose und Therapie verschiedener Schlafstörungen erfordert die Kooperation einer Vielzahl von medizinischen Fachdisziplinen. Durch die Zusammenarbeit von Vertretern aus den Bereichen der Epidemiologie, Humangenetik, HNO, Mund-, Kiefer- und Gesichtschirurgie, Innere Medizin, Pneumologie, Kardiologie, Gastroenterologie, Neurologie, Neurophysiologie, Physiologie, Psychologie, Pädiatrie und Pharmakologie erfüllt die Somnologie die multidisziplinären Anforderungen der Schlafforschung und Schlafmedizin. Besonderes Augenmerk liegt hierbei auch auf methodischen Neuerungen der Biomedizinischen Technik. Neben experimentellen oder klinischen Originalarbeiten und Übersichtsarbeiten werden Empfehlungen, Positionspapiere und Leitlinien der DGSM publiziert. Regelmäßig erscheinende Schwerpunktthemen und die Einrichtung einer CME-Rubrik in der Somnologie erfüllen den Aus- und Weiterbildungsanspruch dieser Zeitschrift und der beteiligten Fachgesellschaften.Auf eine ausgewogene Kombination von wissenschaftlichen Inhalten und praxisnahen Inhalten, die der Aus- und Weiterbildung dienen, wird bei der Zusammenstellung der einzelnen Ausgaben Wert gelegt.  Based on current, clinically relevant research results, the journal Somnologie focuses on the etiology, pathophysiology, differential diagnostics and treatment of various sleep disorders.A scientific, comprehensive analysis of the various causes of sleep disorders requires the cooperation of several branches of medicine. Through the collaboration of specialists in the areas of epidemiology, human genetics, ENT, OMF, internal medicine, pneumology, cardiology, gastroenterology, neurology, neurophysiology, physiology, psychology, pediatrics, and pharmacology, Somnologie fulfills the multidisciplinary requirements of sleep research and sleep medicine. Special attention is paid to methodological innovations of biomedical engineering.In addition to experimental and original clinical articles, reviews, case reports, recommendations and guidelines of the DGSM are published. Focus issues and and CME-articles fulfill the continuing education requirements of this journal and the involved professional societies.A balanced combination of scientific content and articles fostering education in sleep medicine is provided in each single issue of Somnologie.

Topics Covered (Recognized by AI)
Medicine74.4%Psychology39%Gynecology36.4%Computer science31.7%Biology31.5%Psychiatry28%Internal medicine26.9%Neuroscience24.2%
Primary Research Areas

WoS Categories & Quartiles

Detailed JCR / JCI category rankings and quartile breakdown from Clarivate

Clarivate JCR & JCI
JCRESCI2026

CLINICAL NEUROLOGY

Q4
Rank265/296
IndexESCI
JCIESCI2026

CLINICAL NEUROLOGY

Q4
Rank279/296
IndexESCI

Annual Historical Statistics & Publications

Track annual publication volume, total citations, and Impact Factor evolution

12 year
2026Latest
IF0.8
Articles / Year25
Total Citations1
2025
IF0.5
Articles / Year45
Total Citations27
2024
IF0.6
Articles / Year51
Total Citations82
2023
IF1.4
Articles / Year41
Total Citations59
2022
IF—
Articles / Year54
Total Citations88

SCImago & Scopus Journal Intelligence

Global SCImago ranking, SJR prestige index, Scopus coverage, and societal policy impact

Rank #20,486Scopus Q4SCImago Profile
Scopus Coverage:1997-2026
Scopus Broad Areas:Medicine
Scopus Citation Rank (SJR)Q4
0.225

Weighted prestige citation metric per document indexed in the Scopus database.

Quartile: Scopus Q4
Citations / Doc (2 years)
0.54

Average citations received per document published in the 2-year window.

2-Year Citation Window
Estimated Publication Fee (APC)
$2,678 USD

Estimated Article Processing Charge for Open Access publication.

Estimated cost / article

Scopus 3-Year Publication & Citation Window

3-Year Citations61
3-Year Documents119
Citable Documents91

Aggregated from Scopus database across the 3-year SJR evaluation window.

Societal Impact & Inclusivity (SCImago)

Policy Citations (Overton)0

Citations in government and international policy documents

Female Author Rate37.1%

Percentage of female authors published in the journal

Real-world societal policy reach and author gender diversity tracked by SCImago.

Scopus Subject Categories

Physiology (medical)Q4
Academic Metric Intelligence

Journal Metrics & Citation Visualizations

Total Cites vs Self-Cites

Evaluation of scholarly independence and citation reach

Total citations steady growth
Self-citation: 16.7%

Citations per Document

Citation metric windows across 2, 3, and 4 years

Cites / Doc (4 years)Cites / Doc (3 years)Cites / Doc (2 years)

Chinese Academy of Sciences (CAS) Classification

Major / minor zone classification and CAS Early Warning List history

Major Category (Broad Field):
4区 (Zone 4)Medicine
Minor Category (Specific Field):
4区CLINICAL NEUROLOGY
CAS Early Warning List History:
Updated annually: 2020 – 2024
2020
Not warned
2021
Not warned
2022
Not warned
2023
Not warned
2024
Not warned

Academic Intelligence Overview & Context

ImpaQ Analysis

Somnologie (acronym: ssus, ISSN: 1432-9123) is a peer-reviewed international scholarly journal in the field of CLINICAL NEUROLOGY, published by Springer Nature in Germany. The periodical holds a Journal Impact Factor (JIF) of 0.80, ranking in quartile Q4 of Web of Science (ESCI), a Scopus SJR indicator of 0.225 (Q4), an H-index of 32.

The journal enforces rigorous peer evaluation with a publication frequency of 4 issues per year, an annual output of approximately 30 scientific articles. In terms of accessibility and author fees, it operates under the Hybrid model with an estimated APC of $2,678 USD. It serves as a benchmark publication platform for academics, researchers, and doctoral candidates seeking global research visibility.

Publishing & Editorial Information

Detailed publisher, peer-review turnaround, and publication cycle specifications

Open Access Model
Hybrid
Publisher
Springer Nature
Publication Language
English
Frequency
4 issues per year
Indexing & Databases
ESCIScopusPubMed

Similar Journals in Discipline

Journals in the same research field with comparable impact metrics

Record UUID: adba15c1-0612-403f-b3bf-030d7d0dec81
Database Updated: 2026-10-01