Ryoko Hiroi

1.2k total citations
24 papers, 959 citations indexed

About

Ryoko Hiroi is a scholar working on Behavioral Neuroscience, Genetics and Endocrinology, Diabetes and Metabolism. According to data from OpenAlex, Ryoko Hiroi has authored 24 papers receiving a total of 959 indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Behavioral Neuroscience, 10 papers in Genetics and 8 papers in Endocrinology, Diabetes and Metabolism. Recurrent topics in Ryoko Hiroi's work include Stress Responses and Cortisol (13 papers), Estrogen and related hormone effects (10 papers) and Menopause: Health Impacts and Treatments (7 papers). Ryoko Hiroi is often cited by papers focused on Stress Responses and Cortisol (13 papers), Estrogen and related hormone effects (10 papers) and Menopause: Health Impacts and Treatments (7 papers). Ryoko Hiroi collaborates with scholars based in United States and Brazil. Ryoko Hiroi's co-authors include John F. Neumaier, Robert J. Handa, Ross A. McDevitt, David L. Carbone, Damian G. Zuloaga, Heather A. Bimonte‐Nelson, Jaime F. Olavarría, Miriam Elizabeth Mendes Angelucci, Pedro Luiz Rosalen and Cláudio Da Cunha and has published in prestigious journals such as The Journal of Comparative Neurology, Biological Psychiatry and Brain Research.

In The Last Decade

Ryoko Hiroi

23 papers receiving 937 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Ryoko Hiroi United States	17	357	237	212	209	200	24	959
Brenda Bingham Canada	13	502 1.4×	329 1.4×	121 0.6×	173 0.8×	198 1.0×	14	947
Jonathan N. Flak United States	17	290 0.8×	198 0.8×	63 0.3×	128 0.6×	140 0.7×	24	1.1k
Judith K. McQueen United Kingdom	13	234 0.7×	152 0.6×	186 0.9×	236 1.1×	310 1.6×	22	994
Inga‐Maj Johansson Sweden	21	394 1.1×	285 1.2×	90 0.4×	175 0.8×	285 1.4×	28	1.1k
Huxing Cui United States	23	194 0.5×	119 0.5×	207 1.0×	105 0.5×	230 1.1×	47	1.7k
Yuuki Ooishi Japan	14	307 0.9×	165 0.7×	360 1.7×	277 1.3×	341 1.7×	27	930
Fabio Pibiri United States	15	357 1.0×	197 0.8×	156 0.7×	95 0.5×	391 2.0×	17	1.1k
Bettina Hermann Germany	11	602 1.7×	369 1.6×	100 0.5×	220 1.1×	462 2.3×	11	1.1k
Katie J. McLaughlin United States	10	627 1.8×	286 1.2×	151 0.7×	148 0.7×	234 1.2×	11	947
Joram D. Mul Netherlands	22	165 0.5×	122 0.5×	60 0.3×	123 0.6×	250 1.3×	44	1.2k

Countries citing papers authored by Ryoko Hiroi

Since Specialization

Citations

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

Fields of papers citing papers by Ryoko Hiroi

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ryoko Hiroi

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

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Hiroi, Ryoko, et al.. (2023). Correlation Between Intracranial Calcification and Extracranial Stenosis of the Internal Carotid Artery. Cureus. 15(6). e40234–e40234. 1 indexed citations

Koebele, Stephanie V., Ryoko Hiroi, Sarah E. Mennenga, et al.. (2021). Clinically Used Hormone Formulations Differentially Impact Memory, Anxiety-Like, and Depressive-Like Behaviors in a Rat Model of Transitional Menopause. Frontiers in Behavioral Neuroscience. 15. 696838–696838. 13 indexed citations

Hiroi, Ryoko, et al.. (2021). Age Impacts the Burden That Reference Memory Imparts on an Increasing Working Memory Load and Modifies Relationships With Cholinergic Activity. Frontiers in Behavioral Neuroscience. 15. 610078–610078. 9 indexed citations

Hiroi, Ryoko, et al.. (2017). Contrasting effects of individual versus combined estrogen and progestogen regimens as working memory load increases in middle-aged ovariectomized rats: one plus one does not equal two. Neurobiology of Aging. 64. 1–14. 31 indexed citations

Hiroi, Ryoko, David L. Carbone, Damian G. Zuloaga, Heather A. Bimonte‐Nelson, & Robert J. Handa. (2016). Sex-dependent programming effects of prenatal glucocorticoid treatment on the developing serotonin system and stress-related behaviors in adulthood. Neuroscience. 320. 43–56. 50 indexed citations

Hiroi, Ryoko, Stephanie V. Koebele, Sarah E. Mennenga, et al.. (2016). Benefits of Hormone Therapy Estrogens Depend on Estrogen Type: 17β-Estradiol and Conjugated Equine Estrogens Have Differential Effects on Cognitive, Anxiety-Like, and Depressive-Like Behaviors and Increase Tryptophan Hydroxylase-2 mRNA Levels in Dorsal Raphe Nucleus Subregions. Frontiers in Neuroscience. 10. 517–517. 40 indexed citations

Koebele, Stephanie V., Sarah E. Mennenga, Ryoko Hiroi, et al.. (2016). Cognitive changes across the menopause transition: A longitudinal evaluation of the impact of age and ovarian status on spatial memory. Hormones and Behavior. 87. 96–114. 43 indexed citations

Hiroi, Ryoko, et al.. (2015). Sex-specific effects of chronic antidepressant treatment in middle-aged rats: impact of citalopram on cognition and depressive-like behaviors. Maturitas. 81(1). 159–159. 1 indexed citations

Hiroi, Ryoko, et al.. (2013). The Androgen Metabolite, 5α-Androstane-3β,17β-Diol (3β-Diol), Activates the Oxytocin Promoter Through an Estrogen Receptor-β Pathway. Endocrinology. 154(5). 1802–1812. 41 indexed citations

10.

Acosta, Jazmin I., et al.. (2013). An update on the cognitive impact of clinically-used hormone therapies in the female rat: Models, mazes, and mechanisms. Brain Research. 1514. 18–39. 23 indexed citations

11.

Zuloaga, Damian G., et al.. (2012). Perinatal dexamethasone‐induced alterations in apoptosis within the hippocampus and paraventricular nucleus of the hypothalamus are influenced by age and sex. Journal of Neuroscience Research. 90(7). 1403–1412. 35 indexed citations

12.

Zuloaga, Damian G., et al.. (2011). Dexamethasone induces apoptosis in the developing rat amygdala in an age-, region-, and sex-specific manner. Neuroscience. 199. 535–547. 53 indexed citations

13.

McDevitt, Ross A., et al.. (2011). Serotonin 1B Autoreceptors Originating in the Caudal Dorsal Raphe Nucleus Reduce Expression of Fear and Depression-Like Behavior. Biological Psychiatry. 69(8). 780–787. 49 indexed citations

14.

Hiroi, Ryoko & John F. Neumaier. (2011). Complex Roles of Estrogen in Emotion: Sex Matters. Biological Psychiatry. 70(10). 908–909. 10 indexed citations

15.

Hiroi, Ryoko, Ross A. McDevitt, Paul A. Morcos, Michael Clark, & John F. Neumaier. (2010). Overexpression or knockdown of rat tryptophan hyroxylase-2 has opposing effects on anxiety behavior in an estrogen-dependent manner. Neuroscience. 176. 120–131. 17 indexed citations

16.

Hiroi, Ryoko & John F. Neumaier. (2008). Estrogen decreases 5-HT1B autoreceptor mRNA in selective subregion of rat dorsal raphe nucleus: Inverse association between gene expression and anxiety behavior in the open field. Neuroscience. 158(2). 456–464. 40 indexed citations

17.

Hiroi, Ryoko, Ross A. McDevitt, & John F. Neumaier. (2006). Estrogen Selectively Increases Tryptophan Hydroxylase-2 mRNA Expression in Distinct Subregions of Rat Midbrain Raphe Nucleus: Association between Gene Expression and Anxiety Behavior in the Open Field. Biological Psychiatry. 60(3). 288–295. 133 indexed citations

18.

Hiroi, Ryoko & John F. Neumaier. (2005). Differential effects of ovarian steroids on anxiety versus fear as measured by open field test and fear-potentiated startle. Behavioural Brain Research. 166(1). 93–100. 113 indexed citations

19.

Olavarría, Jaime F. & Ryoko Hiroi. (2003). Retinal influences specify cortico‐cortical maps by postnatal day six in rats and mice. The Journal of Comparative Neurology. 459(2). 156–172. 37 indexed citations

20.

Angelucci, Miriam Elizabeth Mendes, et al.. (2002). Effects of caffeine on learning and memory in rats tested in the Morris water maze. Brazilian Journal of Medical and Biological Research. 35(10). 1201–1208. 100 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.

Explore authors with similar magnitude of impact