Igor Ondrejka

1.2k total citations
65 papers, 884 citations indexed

About

Igor Ondrejka is a scholar working on Cardiology and Cardiovascular Medicine, Psychiatry and Mental health and Cognitive Neuroscience. According to data from OpenAlex, Igor Ondrejka has authored 65 papers receiving a total of 884 indexed citations (citations by other indexed papers that have themselves been cited), including 25 papers in Cardiology and Cardiovascular Medicine, 24 papers in Psychiatry and Mental health and 16 papers in Cognitive Neuroscience. Recurrent topics in Igor Ondrejka's work include Heart Rate Variability and Autonomic Control (24 papers), Attention Deficit Hyperactivity Disorder (16 papers) and Tryptophan and brain disorders (9 papers). Igor Ondrejka is often cited by papers focused on Heart Rate Variability and Autonomic Control (24 papers), Attention Deficit Hyperactivity Disorder (16 papers) and Tryptophan and brain disorders (9 papers). Igor Ondrejka collaborates with scholars based in Slovakia, Czechia and Hungary. Igor Ondrejka's co-authors include Ingrid Tonhajzerová, Igor Hrtánek, Zuzana Višňovcová, Michal Javorka, Michal Mestanik, K Javorka, Andrea Mestanikova, Andrea Čalkovská, Veronika Husarova and Zuzana Turianiková and has published in prestigious journals such as SHILAP Revista de lepidopterología, Scientific Reports and International Journal of Molecular Sciences.

In The Last Decade

Igor Ondrejka

64 papers receiving 863 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Igor Ondrejka Slovakia 18 301 270 249 147 127 65 884
Milos Milic United States 14 282 0.9× 177 0.7× 142 0.6× 138 0.9× 103 0.8× 30 904
Zuzana Višňovcová Slovakia 16 359 1.2× 174 0.6× 118 0.5× 103 0.7× 62 0.5× 54 695
Jiliang Fang China 16 356 1.2× 578 2.1× 187 0.8× 157 1.1× 90 0.7× 50 1.3k
Po Lai Yau United States 15 221 0.7× 213 0.8× 187 0.8× 79 0.5× 112 0.9× 17 1.3k
Takamasa Noda Japan 21 249 0.8× 518 1.9× 290 1.2× 182 1.2× 133 1.0× 52 1.5k
Sandy Berger Germany 21 682 2.3× 279 1.0× 189 0.8× 203 1.4× 136 1.1× 29 1.1k
Salvador M. Guinjoan Argentina 20 494 1.6× 485 1.8× 280 1.1× 355 2.4× 203 1.6× 77 1.3k
Shenghong Pu Japan 19 387 1.3× 609 2.3× 311 1.2× 215 1.5× 149 1.2× 43 1.4k
Ripu D. Jindal United States 18 128 0.4× 429 1.6× 185 0.7× 320 2.2× 121 1.0× 30 920
M.W. Agelink Germany 24 909 3.0× 339 1.3× 406 1.6× 229 1.6× 114 0.9× 60 1.8k

Countries citing papers authored by Igor Ondrejka

Since Specialization
Citations

This map shows the geographic impact of Igor Ondrejka's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Igor Ondrejka with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Igor Ondrejka more than expected).

Fields of papers citing papers by Igor Ondrejka

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Igor Ondrejka. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Igor Ondrejka. The network helps show where Igor Ondrejka may publish in the future.

Co-authorship network of co-authors of Igor Ondrejka

This figure shows the co-authorship network connecting the top 25 collaborators of Igor Ondrejka. A scholar is included among the top collaborators of Igor Ondrejka based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Igor Ondrejka. Igor Ondrejka is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Višňovcová, Zuzana, et al.. (2024). Mechanisms Involved in the Link between Depression, Antidepressant Treatment, and Associated Weight Change. International Journal of Molecular Sciences. 25(8). 4511–4511. 11 indexed citations
2.
Kováčová, Veronika, et al.. (2024). Effect of Acute Ketamine Treatment on Sympathetic Regulation Indexed by Electrodermal Activity in Adolescent Major Depression. Pharmaceuticals. 17(3). 358–358. 1 indexed citations
3.
Višňovcová, Zuzana, et al.. (2024). COVID-19 pandemic as a huge stressor of the 21st century. Bratislavské lekárske listy/Bratislava medical journal. 125(11). 677–684. 1 indexed citations
4.
Kováčová, Veronika, et al.. (2024). Effects of Ketamine vs. Midazolam in Adolescent Treatment Resistant Depression. Pharmaceuticals. 17(12). 1627–1627. 2 indexed citations
5.
Tonhajzerová, Ingrid, et al.. (2023). Cardiac Autonomic Balance Is Altered during the Acute Stress Response in Adolescent Major Depression—Effect of Sex. Life. 13(11). 2230–2230. 1 indexed citations
6.
Višňovcová, Zuzana, et al.. (2023). Effects of Vortioxetine on Sleep Architecture of Adolescents with Major Depressive Disorder. SHILAP Revista de lepidopterología. 5(4). 627–638. 6 indexed citations
7.
Dvorská, Dana, Dušan Braný, Zuzana Daňková, et al.. (2023). The VEGF protein levels, miR-101-3p, and miR-122-5p are dysregulated in plasma from adolescents with major depression. Journal of Affective Disorders. 334. 60–68. 8 indexed citations
8.
Višňovcová, Zuzana, et al.. (2023). Peripheral Inflammatory Markers in Autism Spectrum Disorder and Attention Deficit/Hyperactivity Disorder at Adolescent Age. International Journal of Molecular Sciences. 24(14). 11710–11710. 35 indexed citations
9.
Tonhajzerová, Ingrid, et al.. (2022). Major depressive disorder at adolescent age is associated with impaired cardiovascular autonomic regulation and vasculature functioning. International Journal of Psychophysiology. 181. 14–22. 16 indexed citations
10.
Višňovcová, Zuzana, et al.. (2020). Spectral and Nonlinear Analysis of Electrodermal Activity in Adolescent Anorexia Nervosa. Applied Sciences. 10(13). 4514–4514. 7 indexed citations
11.
Ondrejka, Igor, et al.. (2020). Simultaneous determination of fluoxetine, venlafaxine, vortioxetine and their active metabolites in human plasma by LC–MS/MS using one-step sample preparation procedure. Journal of Pharmaceutical and Biomedical Analysis. 181. 113098–113098. 20 indexed citations
12.
Husarova, Veronika, et al.. (2018). Anxiolytic effects of venlafaxine/olanzapine combination in treatment of anxious depression.. PubMed. 38(8). 579–585. 2 indexed citations
13.
Ondrejka, Igor, et al.. (2018). QTc prolongation after ADHD medication.. PubMed. 38(8). 549–554. 5 indexed citations
14.
Mestanikova, Andrea, Igor Ondrejka, Michal Mestanik, et al.. (2017). Pupillary Light Reflex is Altered in Adolescent Depression. Physiological Research. 66(Suppl 2). S277–S284. 23 indexed citations
15.
Mahmood, Silvia, et al.. (2016). Association of EGF, IGFBP-3 and TP53 Gene Polymorphisms with Major Depressive Disorder in Slovak Population. Central European Journal of Public Health. 24(3). 223–230. 16 indexed citations
16.
Husarova, Veronika, Michal Bittšanský, Igor Ondrejka, & Dušan Dobrota. (2014). Correlations of ADHD symptoms with neurometabolites measured by 1H magnetic resonance spectroscopy. Bratislavské lekárske listy/Bratislava medical journal. 115(10). 635–642. 8 indexed citations
17.
Tonhajzerová, Ingrid, Igor Ondrejka, Zuzana Višňovcová, et al.. (2012). Heart rate time irreversibility is impaired in adolescent major depression. Progress in Neuro-Psychopharmacology and Biological Psychiatry. 39(1). 212–217. 35 indexed citations
18.
Ondrejka, Igor, et al.. (2012). Coexisting Depression and Anxiety: Classification and Treatment. SHILAP Revista de lepidopterología. 12(2). 32–38. 2 indexed citations
19.
Tonhajzerová, Ingrid, et al.. (2010). Cardiac autonomic regulation is impaired in girls with major depression. Progress in Neuro-Psychopharmacology and Biological Psychiatry. 34(4). 613–618. 67 indexed citations
20.
Tonhajzerová, Ingrid, Igor Ondrejka, Michal Javorka, et al.. (2009). Respiratory sinus arrhythmia is reduced in adolescent major depressive disorder. European journal of medical research. 14(Suppl 4). 280–280. 31 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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