Ronald P. Hammer

7.5k total citations · 1 hit paper
96 papers, 6.8k citations indexed

About

Ronald P. Hammer is a scholar working on Cellular and Molecular Neuroscience, Molecular Biology and Social Psychology. According to data from OpenAlex, Ronald P. Hammer has authored 96 papers receiving a total of 6.8k indexed citations (citations by other indexed papers that have themselves been cited), including 66 papers in Cellular and Molecular Neuroscience, 33 papers in Molecular Biology and 26 papers in Social Psychology. Recurrent topics in Ronald P. Hammer's work include Neurotransmitter Receptor Influence on Behavior (39 papers), Neuroscience and Neuropharmacology Research (33 papers) and Neuroendocrine regulation and behavior (26 papers). Ronald P. Hammer is often cited by papers focused on Neurotransmitter Receptor Influence on Behavior (39 papers), Neuroscience and Neuropharmacology Research (33 papers) and Neuroendocrine regulation and behavior (26 papers). Ronald P. Hammer collaborates with scholars based in United States, China and Japan. Ronald P. Hammer's co-authors include Ella M. Nikulina, Klaus A. Miczek, Miles Herkenham, Arnold B. Scheibel, Robert S. Bridges, Herbert E. Covington, Rémi Quirion, Candace B. Pert, Sanya Fanous and Daniel W. Clow and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Nucleic Acids Research and Journal of Neuroscience.

In The Last Decade

Ronald P. Hammer

96 papers receiving 6.7k citations

Hit Papers

align trajectories sort by overperformance

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.

Autoradiographic localization of dopamine D1 and D2 receptors in rat nucleus accumbens: Resistance to differential rearing conditions

1991 3.1k citations Ronald P. Hammer et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Ronald P. Hammer United States	37	4.1k	1.9k	1.5k	1.3k	1.2k	96	6.8k
Bart Ellenbroek Netherlands	45	3.5k 0.8×	2.0k 1.1×	1.2k 0.8×	1.5k 1.1×	1.6k 1.3×	173	7.1k
H. Simon France	43	4.6k 1.1×	1.7k 0.9×	2.0k 1.3×	1.8k 1.4×	2.4k 1.9×	80	7.7k
Maarten van den Buuse Australia	48	3.4k 0.8×	2.0k 1.0×	1.2k 0.8×	1.4k 1.0×	1.8k 1.5×	254	7.7k
Djoher Nora Abrous France	48	4.6k 1.1×	2.0k 1.1×	1.9k 1.3×	1.1k 0.8×	1.8k 1.5×	127	10.3k
Howard C. Becker United States	48	4.1k 1.0×	1.7k 0.9×	1.5k 1.0×	710 0.5×	1.2k 1.0×	173	7.3k
Alexander R. Cools Netherlands	39	2.7k 0.6×	1.4k 0.7×	1.0k 0.7×	1000 0.7×	830 0.7×	146	4.9k
Alain Gratton Canada	44	3.1k 0.7×	1.4k 0.7×	1.5k 1.0×	1.9k 1.4×	1.8k 1.4×	93	6.2k
Michael Koch Germany	49	4.0k 1.0×	1.7k 0.9×	2.4k 1.6×	1.1k 0.8×	1.1k 0.9×	148	7.3k
Stefano Puglisi‐Allegra Italy	54	4.9k 1.2×	2.7k 1.4×	2.3k 1.5×	1.9k 1.4×	2.3k 1.8×	244	9.5k
D. Eugene Redmond United States	50	4.2k 1.0×	2.5k 1.3×	1.4k 1.0×	719 0.5×	813 0.7×	124	8.1k

Countries citing papers authored by Ronald P. Hammer

Since Specialization

Citations

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

Fields of papers citing papers by Ronald P. Hammer

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ronald P. Hammer. 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 Ronald P. Hammer. The network helps show where Ronald P. Hammer may publish in the future.

Co-authorship network of co-authors of Ronald P. Hammer

This figure shows the co-authorship network connecting the top 25 collaborators of Ronald P. Hammer. A scholar is included among the top collaborators of Ronald P. Hammer 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 Ronald P. Hammer. Ronald P. Hammer 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

Hammer, Ronald P., et al.. (2020). Enhanced psychostimulant response, but not social avoidance, depends on GluA1 AMPA receptors in VTA dopamine neurons following intermittent social defeat stress in rats. European Journal of Neuroscience. 55(9-10). 2154–2169. 4 indexed citations

Huang, Zebing, Haiyan Wang, Jingke Wang, et al.. (2016). Cannabinoid receptor subtype 2 (CB2R) agonist, GW405833 reduces agonist-induced Ca2+ oscillations in mouse pancreatic acinar cells. Scientific Reports. 6(1). 29757–29757. 10 indexed citations

Hoffman, Ann N., et al.. (2015). Chronic stress enhanced fear memories are associated with increased amygdala zif268 mRNA expression and are resistant to reconsolidation. Neurobiology of Learning and Memory. 120. 61–68. 37 indexed citations

Fanous, Sanya, Ernest F. Terwilliger, Ronald P. Hammer, & Ella M. Nikulina. (2011). Viral depletion of VTA BDNF in rats modulates social behavior, consequences of intermittent social defeat stress, and long-term weight regulation. Neuroscience Letters. 502(3). 192–196. 23 indexed citations

Nikulina, Ella M., Isabel Arrillaga‐Romany, Klaus A. Miczek, & Ronald P. Hammer. (2008). Long‐lasting alteration in mesocorticolimbic structures after repeated social defeat stress in rats: time course of µ‐opioid receptor mRNA and FosB/ΔFosB immunoreactivity. European Journal of Neuroscience. 27(9). 2272–2284. 72 indexed citations

Petryshen, Tracey L., Andrew Kirby, Ronald P. Hammer, et al.. (2005). Two Quantitative Trait Loci for Prepulse Inhibition of Startle Identified on Mouse Chromosome 16 Using Chromosome Substitution Strains. Genetics. 171(4). 1895–1904. 30 indexed citations

Swerdlow, Neal R., et al.. (2005). Heritable Differences in the Dopaminergic Regulation of Behavior in Rats: Relationship to D2-Like Receptor G-Protein Function. Neuropsychopharmacology. 31(4). 721–729. 25 indexed citations

Hope, Bruce T., et al.. (2004). Repeated Quinpirole Treatment Increases cAMP-Dependent Protein Kinase Activity and CREB Phosphorylation in Nucleus Accumbens and Reverses Quinpirole-Induced Sensorimotor Gating Deficits in Rats. Neuropsychopharmacology. 29(10). 1823–1830. 31 indexed citations

Covington, Herbert E., et al.. (2004). Brief Social Defeat Stress: Long Lasting Effects on Cocaine Taking During a Binge and Zif268 mRNA Expression in the Amygdala and Prefrontal Cortex. Neuropsychopharmacology. 30(2). 310–321. 113 indexed citations

10.

Kaplan, Gary B. & Ronald P. Hammer. (2002). Brain circuitry and signaling in psychiatry. 3 indexed citations

11.

Zhou, Lei & Ronald P. Hammer. (1995). Gonadal steroid hormones upregulate medial preoptic μ-opioid receptors in the rat. European Journal of Pharmacology. 278(3). 271–274. 22 indexed citations

12.

Hammer, Ronald P., et al.. (1994). Gradual tolerance of metabolic activity is produced in mesolimbic regions by chronic cocaine treatment, while subsequent cocaine challenge activates extrapyramidal regions of rat brain. Journal of Neuroscience. 14(7). 4289–4298. 26 indexed citations

13.

Hammer, Ronald P., et al.. (1993). Chronic fluoxetine treatment up‐regulates dopamine receptors in the mesolimbic forebrain of the rat. 1(2). 82–87. 10 indexed citations

14.

Hammer, Ronald P., Washington Pires, A. Markou, & George F. Koob. (1993). Withdrawal following cocaine self‐administration decreases regional cerebral metabolic rate in critical brain reward regions. Synapse. 14(1). 73–80. 44 indexed citations

15.

Hammer, Ronald P., et al.. (1992). Hormonal Regulation of Medial Preoptic μ-Opiate Receptor Density before and after Parturition. Neuroendocrinology. 56(1). 38–45. 33 indexed citations

16.

Hammer, Ronald P., Kevin Hori, Robert J. Blanchard, & D. Caroline Blanchard. (1992). Domestication alters 5-HT1A receptor binding in rat brain. Pharmacology Biochemistry and Behavior. 42(1). 25–28. 25 indexed citations

17.

Bridges, Robert S. & Ronald P. Hammer. (1992). Parity-associated alterations of medial preoptic opiate receptors in female rats. Brain Research. 578(1-2). 269–274. 47 indexed citations

18.

Hammer, Ronald P., et al.. (1992). Dynamic Patterns of Medial Preoptic μ-Opiate Receptor Regulation by Gonadal Steroid Hormones. Neuroendocrinology. 55(1). 51–58. 36 indexed citations

19.

Hammer, Ronald P. & Robert S. Bridges. (1987). Preoptic area opioids and opiate receptors increase during pregnancy and decrease during lactation. Brain Research. 420(1). 48–56. 88 indexed citations

20.

Hammer, Ronald P.. (1984). The sexually dimorphic region of the preoptic area in rats contains denser opiate receptor binding sites in females. Brain Research. 308(1). 172–176. 87 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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