Robert Siman

4.4k total citations
43 papers, 3.7k citations indexed

About

Robert Siman is a scholar working on Molecular Biology, Cellular and Molecular Neuroscience and Physiology. According to data from OpenAlex, Robert Siman has authored 43 papers receiving a total of 3.7k indexed citations (citations by other indexed papers that have themselves been cited), including 26 papers in Molecular Biology, 19 papers in Cellular and Molecular Neuroscience and 16 papers in Physiology. Recurrent topics in Robert Siman's work include Neuroscience and Neuropharmacology Research (15 papers), Calpain Protease Function and Regulation (14 papers) and Alzheimer's disease research and treatments (14 papers). Robert Siman is often cited by papers focused on Neuroscience and Neuropharmacology Research (15 papers), Calpain Protease Function and Regulation (14 papers) and Alzheimer's disease research and treatments (14 papers). Robert Siman collaborates with scholars based in United States, Canada and Hungary. Robert Siman's co-authors include Robert B. Nelson, J. Patrick Card, Robert W. Neumar, John T. Povlishock, András Büki, William L. Klein, Ying Xu, John Q. Trojanowski, Rodney P. Guttmann and Hemal Gada and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Journal of Biological Chemistry and Neuron.

In The Last Decade

Robert Siman

43 papers receiving 3.6k citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Robert Siman United States	31	2.0k	1.4k	930	885	811	43	3.7k
Robert Siman United States	40	2.9k 1.4×	1.5k 1.1×	1.7k 1.9×	1.4k 1.6×	994 1.2×	63	5.4k
Frank Gillardon Germany	37	2.2k 1.1×	1.5k 1.0×	1.0k 1.1×	499 0.6×	1.5k 1.8×	98	4.6k
Shobu Namura Japan	28	2.7k 1.3×	1.0k 0.7×	563 0.6×	320 0.4×	442 0.5×	41	4.7k
Ryuji Hata Japan	36	2.1k 1.0×	1.3k 0.9×	767 0.8×	256 0.3×	447 0.6×	70	4.7k
Inger Lauritzen France	33	2.7k 1.3×	1.6k 1.2×	1.2k 1.3×	545 0.6×	219 0.3×	47	4.5k
Christoph Wießner Switzerland	33	1.4k 0.7×	986 0.7×	684 0.7×	235 0.3×	549 0.7×	60	3.7k
Bingren Hu United States	28	1.4k 0.7×	772 0.5×	330 0.4×	478 0.5×	309 0.4×	51	2.5k
Gareth W. Roberts United Kingdom	27	1.5k 0.7×	775 0.6×	1.8k 1.9×	285 0.3×	602 0.7×	49	3.6k
Giuseppina Tesco United States	27	1.2k 0.6×	619 0.4×	1.4k 1.5×	412 0.5×	370 0.5×	45	2.6k
Günter Mies Germany	30	1.3k 0.6×	859 0.6×	342 0.4×	250 0.3×	575 0.7×	60	3.3k

Countries citing papers authored by Robert Siman

Since Specialization

Citations

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

Fields of papers citing papers by Robert Siman

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Robert Siman

This figure shows the co-authorship network connecting the top 25 collaborators of Robert Siman. A scholar is included among the top collaborators of Robert Siman 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 Robert Siman. Robert Siman is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Siman, Robert, Pashtun Shahim, Yelverton Tegner, et al.. (2014). Serum SNTF Increases in Concussed Professional Ice Hockey Players and Relates to the Severity of Postconcussion Symptoms. Journal of Neurotrauma. 32(17). 1294–1300. 81 indexed citations

Reyn, Catherine R. von, et al.. (2012). Mechanisms of calpain mediated proteolysis of voltage gated sodium channel α‐subunits followingin vitrodynamic stretch injury. Journal of Neurochemistry. 121(5). 793–805. 40 indexed citations

Siman, Robert, Nicholas Giovannone, Suzanne Frangos, et al.. (2011). Evidence that a Panel of Neurodegeneration Biomarkers Predicts Vasospasm, Infarction, and Outcome in Aneurysmal Subarachnoid Hemorrhage. PLoS ONE. 6(12). e28938–e28938. 35 indexed citations

Curtis, Kevin M., et al.. (2005). Neuroprotection with delayed initiation of prolonged hypothermia after in vitro transient global brain ischemia. Resuscitation. 64(3). 383–388. 20 indexed citations

Siman, Robert, et al.. (2005). Novel Surrogate Markers for Acute Brain Damage: Cerebrospinal Fluid Levels Corrrelate with Severity of Ischemic Neurodegeneration in the Rat. Journal of Cerebral Blood Flow & Metabolism. 25(11). 1433–1444. 39 indexed citations

Pang, Zhen, Vimala Bondada, Tomoko Sengoku, Robert Siman, & James W. Geddes. (2003). Calpain Facilitates the Neuron Death Induced by 3-Nitropropionic Acid and Contributes to the Necrotic Morphology. Journal of Neuropathology & Experimental Neurology. 62(6). 633–643. 44 indexed citations

Han, Byung Hee, Daigen Xu, Junjeong Choi, et al.. (2002). Selective, Reversible Caspase-3 Inhibitor Is Neuroprotective and Reveals Distinct Pathways of Cell Death after Neonatal Hypoxic-ischemic Brain Injury. Journal of Biological Chemistry. 277(33). 30128–30136. 141 indexed citations

Beesley, Jacqueline, et al.. (2001). Caspase‐3 activation in oligodendrocytes from the myelin‐deficient rat. Journal of Neuroscience Research. 64(4). 371–379. 9 indexed citations

Neumar, Robert W., Angela M. Mills, Ying Xu, et al.. (2001). Calpain Activity in the Rat Brain after Transient Forebrain Ischemia. Experimental Neurology. 170(1). 27–35. 109 indexed citations

10.

Okonkwo, David O., András Büki, Robert Siman, & John T. Povlishock. (1999). Cyclosporin A limits calcium-induced axonal damage following traumatic brain injury. Neuroreport. 10(2). 353–358. 164 indexed citations

11.

Büki, András, Robert Siman, John Q. Trojanowski, & John T. Povlishock. (1999). The Role of Calpail-Mediated Spectrin Proteolysis in Traumatically Induced Axonal Injury. Journal of Neuropathology & Experimental Neurology. 58(4). 365–375. 207 indexed citations

12.

Bi, Xiaoning, Vanessa Chang, Robert Siman, Georges Tocco, & Michel Baudry. (1996). Regional distribution and time-course of calpain activation following kainate-induced seizure activity in adult rat brain. Brain Research. 726(1-2). 98–108. 77 indexed citations

13.

Savage, Mary J., et al.. (1995). Elevated Aβ levels in Alzheimer's disease brain are associated with selective accumulation of Aβ42 in parenchymal amyloid plaques and both Aβ40 and Aβ42 in cerebrovascular deposits. Amyloid. 2(4). 234–240. 29 indexed citations

14.

Nelson, Robert B., Robert Siman, Mohamed Iqbal, & Huntington Potter. (1993). Identification of a Chymotrypsin‐Like Mast Cell Protease in Rat Brain Capable of Generating the N‐Terminus of the Alzheimer Amyloid β‐Protein. Journal of Neurochemistry. 61(2). 567–577. 40 indexed citations

15.

Marcy, Val R., et al.. (1993). Aurintricarboxylic Acid Protects Hippocampal Neurons from NMDA‐and Ischemia‐Induced Toxicity In Vivo. Journal of Neurochemistry. 61(1). 378–381. 78 indexed citations

16.

Siman, Robert. (1992). Proteolytic Mechanism for the Neurodegeneration of Alzheimer's Disease. Annals of the New York Academy of Sciences. 674(1). 193–202. 11 indexed citations

17.

Potter, Huntington, Robert B. Nelson, Saumya Das, et al.. (1992). The Involvement of Proteases, Protease Inhibitors, and an Acute Phase Response in Alzheimer's Disease ^a. Annals of the New York Academy of Sciences. 674(1). 161–173. 24 indexed citations

18.

Nelson, Robert B. & Robert Siman. (1990). Thrombin and its inhibitors regulate morphological and biochemical differentiation of astrocytes in vitro. Developmental Brain Research. 54(1). 93–104. 82 indexed citations

19.

Nelson, Robert B. & Robert Siman. (1990). Clipsin, a chymotrypsin-like protease in rat brain which is irreversibly inhibited by alpha-1-antichymotrypsin.. Journal of Biological Chemistry. 265(7). 3836–3843. 39 indexed citations

20.

Nelson, Robert B. & Robert Siman. (1989). Identification and Characterization of Calcium‐Dependent Metalloproteases in Rat Brain. Journal of Neurochemistry. 53(2). 641–647. 28 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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