Robert Ayer

1.8k total citations · 1 hit paper
29 papers, 1.5k citations indexed

About

Robert Ayer is a scholar working on Neurology, Molecular Biology and Neurology. According to data from OpenAlex, Robert Ayer has authored 29 papers receiving a total of 1.5k indexed citations (citations by other indexed papers that have themselves been cited), including 19 papers in Neurology, 6 papers in Molecular Biology and 5 papers in Neurology. Recurrent topics in Robert Ayer's work include Intracranial Aneurysms: Treatment and Complications (15 papers), Traumatic Brain Injury and Neurovascular Disturbances (8 papers) and Intracerebral and Subarachnoid Hemorrhage Research (7 papers). Robert Ayer is often cited by papers focused on Intracranial Aneurysms: Treatment and Complications (15 papers), Traumatic Brain Injury and Neurovascular Disturbances (8 papers) and Intracerebral and Subarachnoid Hemorrhage Research (7 papers). Robert Ayer collaborates with scholars based in United States, Japan and United Kingdom. Robert Ayer's co-authors include John H. Zhang, Takashi Sugawara, Vikram Jadhav, Wanqiu Chen, Jiping Tang, Richard E. Hartman, Hugo Rojas, Joel E. Kamper, Yu Hasegawa and Kenji Kanamaru and has published in prestigious journals such as SHILAP Revista de lepidopterología, Cancer Research and Stroke.

In The Last Decade

Robert Ayer

29 papers receiving 1.5k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

A new grading system evaluating bleeding scale in filament perforation subarachnoid hemorrhage rat model

2007 488 citations Takashi Sugawara, Robert Ayer et al. Journal of Neuroscience Methods profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Robert Ayer United States	16	931	397	311	134	130	29	1.5k
Orhan Altay United States	16	708 0.8×	383 1.0×	382 1.2×	156 1.2×	152 1.2×	22	1.2k
Jingyin Chen China	21	638 0.7×	505 1.3×	318 1.0×	127 0.9×	218 1.7×	31	1.4k
Damon Klebe United States	21	566 0.6×	349 0.9×	362 1.2×	246 1.8×	165 1.3×	36	1.3k
Zongduo Guo China	21	514 0.6×	520 1.3×	276 0.9×	85 0.6×	172 1.3×	66	1.3k
Chuanzhi Duan China	21	661 0.7×	470 1.2×	240 0.8×	70 0.5×	204 1.6×	82	1.4k
Yangdong He United States	15	565 0.6×	305 0.8×	186 0.6×	110 0.8×	304 2.3×	18	982
Fatima A. Sehba United States	24	2.0k 2.1×	356 0.9×	371 1.2×	343 2.6×	277 2.1×	35	2.4k
Michael Besselmann Germany	15	392 0.4×	330 0.8×	479 1.5×	151 1.1×	180 1.4×	19	1.4k
Wanchun You China	17	374 0.4×	338 0.9×	218 0.7×	54 0.4×	92 0.7×	54	874
Liansheng Gao China	22	292 0.3×	394 1.0×	169 0.5×	202 1.5×	190 1.5×	38	1.2k

Countries citing papers authored by Robert Ayer

Since Specialization

Citations

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

Fields of papers citing papers by Robert Ayer

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Robert Ayer

This figure shows the co-authorship network connecting the top 25 collaborators of Robert Ayer. A scholar is included among the top collaborators of Robert Ayer 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 Ayer. Robert Ayer 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

Ayer, Robert, Weidong Tong, Richard L. Applegate, et al.. (2011). Mucosal Tolerance to Brain Antigens Preserves Endogenous TGFβ-1 and Improves Neurological Outcomes Following Experimental Craniotomy. Acta neurochirurgica. Supplementum. 111. 283–287. 2 indexed citations

Ayer, Robert & Alexander Zouros. (2011). Encephalocraniocutaneous lipomatosis: a review of its clinical pathology and neurosurgical indications. Journal of Neurosurgery Pediatrics. 8(3). 316–320. 6 indexed citations

Ayer, Robert, Vikram Jadhav, Takashi Sugawara, & John H. Zhang. (2011). The Neuroprotective Effects of Cyclooxygenase-2 Inhibition in a Mouse Model of Aneurysmal Subarachnoid Hemorrhage. Acta neurochirurgica. Supplementum. 111. 145–149. 30 indexed citations

Suzuki, Hidenori, Yu Hasegawa, Robert Ayer, et al.. (2011). Effects of Recombinant Osteopontin on Blood-Brain Barrier Disruption After Subarachnoid Hemorrhage in Rats. Acta neurochirurgica. Supplementum. 111. 231–236. 11 indexed citations

Suzuki, Hidenori, Robert Ayer, Takashi Sugawara, et al.. (2010). Protective effects of recombinant osteopontin on early brain injury after subarachnoid hemorrhage in rats*. Critical Care Medicine. 38(2). 612–618. 97 indexed citations

Lekic, Tim, Richard E. Hartman, Hugo Rojas, et al.. (2010). Protective Effect of Melatonin upon Neuropathology, Striatal Function, and Memory Ability after Intracerebral Hemorrhage in Rats. Journal of Neurotrauma. 27(3). 627–637. 80 indexed citations

Zhang, John H. & Robert Ayer. (2009). Connecting the early brain injury of aneurysmal subarachnoid hemorrhage to clinical practice. Turkish Neurosurgery. 20(2). 159–66. 47 indexed citations

Ayer, Robert & John H. Zhang. (2009). The clinical significance of acute brain injury in subarachnoid hemorrhage and opportunity for intervention. Acta neurochirurgica. Supplementum. 105. 179–184. 20 indexed citations

Ayer, Robert, Wanqiu Chen, Takashi Sugawara, Hidenori Suzuki, & John H. Zhang. (2009). Role of gap junctions in early brain injury following subarachnoid hemorrhage. Brain Research. 1315. 150–158. 15 indexed citations

10.

Chen, Wanqiu, Richard E. Hartman, Robert Ayer, et al.. (2009). Matrix metalloproteinases inhibition provides neuroprotection against hypoxia‐ischemia in the developing brain. Journal of Neurochemistry. 111(3). 726–736. 98 indexed citations

11.

Hartman, Richard E., Hugo Rojas, Tim Lekic, et al.. (2009). Long-term effects of melatonin after intracerebral hemorrhage in rats. Acta neurochirurgica. Supplementum. 105. 99–100. 9 indexed citations

12.

Ayer, Robert, Takashi Sugawara, & John H. Zhang. (2008). Effects of melatonin in early brain injury following subarachnoid hemorrhage. Acta neurochirurgica. Supplementum. 102. 327–330. 8 indexed citations

13.

Sugawara, Takashi, Robert Ayer, & John H. Zhang. (2008). Role of statins in cerebral vasospasm. Acta neurochirurgica. Supplementum. 104. 287–290. 18 indexed citations

14.

Sugawara, Takashi, Robert Ayer, Vikram Jadhav, et al.. (2008). Simvastatin attenuation of cerebral vasospasm after subarachnoid hemorrhage in rats via increased phosphorylation of Akt and endothelial nitric oxide synthase. Journal of Neuroscience Research. 86(16). 3635–3643. 74 indexed citations

15.

Ayer, Robert & John H. Zhang. (2008). Oxidative stress in subarachnoid haemorrhage: significance in acute brain injury and vasospasm. Acta neurochirurgica. Supplementum. 104. 33–41. 189 indexed citations

16.

Lee, Steve, Vikram Jadhav, Robert Ayer, et al.. (2008). Dual effects of melatonin on oxidative stress after surgical brain injury in rats. Journal of Pineal Research. 46(1). 43–48. 17 indexed citations

17.

Lee, Steve, Vikram Jadhav, Robert Ayer, et al.. (2008). The antioxidant effects of melatonin in surgical brain injury in rats. Acta neurochirurgica. Supplementum. 102. 367–371. 6 indexed citations

18.

Sugawara, Takashi, Vikram Jadhav, Robert Ayer, & John H. Zhang. (2008). Simvastatin attenuates cerebral vasospasm and improves outcomes by upregulation of PI3K/Akt pathway in a rat model of subarachnoid hemorrhage. Acta neurochirurgica. Supplementum. 102. 391–394. 12 indexed citations

19.

Sugawara, Takashi, Robert Ayer, Vikram Jadhav, & John H. Zhang. (2007). A new grading system evaluating bleeding scale in filament perforation subarachnoid hemorrhage rat model. Journal of Neuroscience Methods. 167(2). 327–334. 488 indexed citations breakdown →

20.

Sharma, Himanshu, Robert Ayer, & GR Taylor. (2005). Complex Pediatric Elbow Injury: An Uncommon Case. BMC Musculoskeletal Disorders. 6(1). 13–13. 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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