Semi Helin

3.2k total citations
64 papers, 2.1k citations indexed

About

Semi Helin is a scholar working on Physiology, Psychiatry and Mental health and Cellular and Molecular Neuroscience. According to data from OpenAlex, Semi Helin has authored 64 papers receiving a total of 2.1k indexed citations (citations by other indexed papers that have themselves been cited), including 37 papers in Physiology, 22 papers in Psychiatry and Mental health and 13 papers in Cellular and Molecular Neuroscience. Recurrent topics in Semi Helin's work include Alzheimer's disease research and treatments (23 papers), Dementia and Cognitive Impairment Research (16 papers) and Diet and metabolism studies (12 papers). Semi Helin is often cited by papers focused on Alzheimer's disease research and treatments (23 papers), Dementia and Cognitive Impairment Research (16 papers) and Diet and metabolism studies (12 papers). Semi Helin collaborates with scholars based in Finland, Sweden and United States. Semi Helin's co-authors include Juha O. Rinne, Riitta Parkkola, Kjell Någren, Matti Viitanen, Sargo Aalto, Jussi Hirvonen, Pirjo Nuutila, Mika Scheinin, Lauri Nummenmaa and Vesa Oikonen and has published in prestigious journals such as Journal of Neuroscience, NeuroImage and Brain.

In The Last Decade

Semi Helin

63 papers receiving 2.1k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Semi Helin Finland 23 1.0k 680 432 364 338 64 2.1k
Ivonne Suridjan United Kingdom 21 525 0.5× 640 0.9× 497 1.2× 294 0.8× 673 2.0× 51 2.4k
Swen Hesse Germany 32 583 0.6× 422 0.6× 711 1.6× 637 1.8× 137 0.4× 134 3.1k
Silvia Bagnoli Italy 29 1.0k 1.0× 431 0.6× 363 0.8× 261 0.7× 342 1.0× 135 2.4k
Alex C. Birdsill United States 15 819 0.8× 470 0.7× 100 0.2× 290 0.8× 296 0.9× 28 1.8k
Pierre Payoux France 29 902 0.9× 1.3k 1.9× 501 1.2× 691 1.9× 478 1.4× 153 3.6k
Sang‐Yoon Lee South Korea 19 1.0k 1.0× 838 1.2× 288 0.7× 427 1.2× 255 0.8× 59 2.0k
Meredith N. Braskie United States 28 768 0.7× 676 1.0× 175 0.4× 638 1.8× 265 0.8× 79 2.0k
C H van Dyck United States 9 515 0.5× 636 0.9× 968 2.2× 355 1.0× 129 0.4× 12 2.1k
Frode Willoch Norway 30 1.7k 1.6× 902 1.3× 530 1.2× 1.5k 4.2× 642 1.9× 55 3.7k
Roberta Diehl Rodriguez Brazil 20 797 0.8× 579 0.9× 268 0.6× 315 0.9× 434 1.3× 46 1.7k

Countries citing papers authored by Semi Helin

Since Specialization
Citations

This map shows the geographic impact of Semi Helin'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 Semi Helin with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Semi Helin more than expected).

Fields of papers citing papers by Semi Helin

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Semi Helin. 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 Semi Helin. The network helps show where Semi Helin may publish in the future.

Co-authorship network of co-authors of Semi Helin

This figure shows the co-authorship network connecting the top 25 collaborators of Semi Helin. A scholar is included among the top collaborators of Semi Helin 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 Semi Helin. Semi Helin 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.
Pak, Kyoungjune, Jouni Tuisku, Henry K. Karlsson, et al.. (2025). Anorexia nervosa is associated with higher brain mu-opioid receptor availability. Molecular Psychiatry. 30(7). 2840–2847. 2 indexed citations
2.
Joutsa, Juho, Juha O. Rinne, Mira Karrasch, et al.. (2025). Progression of Amyloid Accumulation in Late Adulthood Among People With Childhood-Onset Epilepsy. Neurology. 104(3). e210303–e210303. 1 indexed citations
3.
Tuisku, Jouni, Lihua Sun, Semi Helin, et al.. (2024). Aberrant type 2 dopamine receptor availability in violent offenders with psychopathy. NeuroImage. 297. 120724–120724. 3 indexed citations
4.
Tuisku, Jouni, Tero Vahlberg, Lars Ekblad, et al.. (2024). Neuroinflammation in Parkinson’s disease: A study with [11C]PBR28 PET and cerebrospinal fluid markers. Parkinsonism & Related Disorders. 130. 107177–107177. 6 indexed citations
5.
Ekblad, Laura L., Juan Lantero‐Rodriguez, Nicholas J. Ashton, et al.. (2024). Blood biomarkers of neurodegeneration associate differently with amyloid deposition, medial temporal atrophy, and cerebrovascular changes in APOE ε4-enriched cognitively unimpaired elderly. Alzheimer s Research & Therapy. 16(1). 112–112. 8 indexed citations
6.
Ekblad, Laura L., Virva Saunavaara, Semi Helin, et al.. (2024). Cognitively healthy APOE4/4 carriers show white matter impairment associated with serum NfL and amyloid-PET. Neurobiology of Disease. 192. 106439–106439. 4 indexed citations
7.
Jern, Patrick, Jouni Tuisku, Tiina Saanijoki, et al.. (2023). Endogenous Opioid Release After Orgasm in Man: A Combined PET/Functional MRI Study. Journal of Nuclear Medicine. 64(8). 1310–1313. 4 indexed citations
8.
Kantonen, Tatu, Tomi Karjalainen, Marco Bucci, et al.. (2021). Obesity risk is associated with altered cerebral glucose metabolism and decreased μ-opioid and CB1 receptor availability. International Journal of Obesity. 46(2). 400–407. 19 indexed citations
9.
Karlsson, Henry K., Lauri Tuominen, Semi Helin, et al.. (2021). Mesolimbic opioid-dopamine interaction is disrupted in obesity but recovered by weight loss following bariatric surgery. Translational Psychiatry. 11(1). 259–259. 15 indexed citations
10.
Martikainen, Ilkka K., Nina Kemppainen, Jan Johansson, et al.. (2019). Brain beta-Amyloid and Atrophy in Individuals at Increased Risk of Cognitive Decline. STM:n Hallinnonalan avoin julkaisuarkisto (Julkari). 2 indexed citations
11.
Li, Xiang‐Guo, Heidi Liljenbäck, Semi Helin, et al.. (2019). Folate receptor-targeted positron emission tomography of experimental autoimmune encephalomyelitis in rats. Journal of Neuroinflammation. 16(1). 252–252. 14 indexed citations
12.
Martikainen, Ilkka K., Nina Kemppainen, Jarkko Johansson, et al.. (2018). Brain β-Amyloid and Atrophy in Individuals at Increased Risk of Cognitive Decline. American Journal of Neuroradiology. 40(1). 80–85. 13 indexed citations
13.
Tuulari, Jetro J., Lauri Tuominen, Jussi Hirvonen, et al.. (2017). Feeding Releases Endogenous Opioids in Humans. Journal of Neuroscience. 37(34). 8284–8291. 57 indexed citations
14.
Tuominen, Lauri, Jetro J. Tuulari, Hasse Karlsson, et al.. (2015). Aberrant mesolimbic dopamine–opiate interaction in obesity. NeuroImage. 122. 80–86. 51 indexed citations
15.
Karlsson, Linnéa, Lauri Tuominen, Sami Leppämäki, et al.. (2013). Serotonin transporter in attention-deficit hyperactivity disorder – preliminary results from a positron emission tomography study. Psychiatry Research Neuroimaging. 212(2). 164–165. 15 indexed citations
16.
Brück, Anna, Jere Virta, J. Koivunen, et al.. (2013). [11C]PIB, [18F]FDG and MR imaging in patients with mild cognitive impairment. European Journal of Nuclear Medicine and Molecular Imaging. 40(10). 1567–1572. 44 indexed citations
17.
Koivunen, J., Mira Karrasch, Noora M. Scheinin, et al.. (2012). Cognitive Decline and Amyloid Accumulation in Patients with Mild Cognitive Impairment. Dementia and Geriatric Cognitive Disorders. 34(1). 31–37. 15 indexed citations
18.
Koivunen, J., Noora M. Scheinin, Jere Virta, et al.. (2011). Amyloid PET imaging in patients with mild cognitive impairment. Neurology. 76(12). 1085–1090. 134 indexed citations
19.
Rinne, Juha O., et al.. (2008). Effects of intravenous placebo with glucose expectation on human basal ganglia dopaminergic function. Synapse. 62(9). 682–688. 31 indexed citations
20.
Asola, Markku, Kirsi A. Virtanen, Kjell Någren, et al.. (2008). Amino-acid-based peritoneal dialysis solution improves amino-acid transport into skeletal muscle. Kidney International. 73(108). S131–S136. 15 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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