J. A. Sim

1.0k citations

25 papers · 902 indexed · h-index 17

Impact in

Physiology top 1%
- Adenosine and Purinergic Signaling
Cellular and Molecular Neuroscience top 5%
- Neuroscience and Neuropharmacology Research

Papers in ⓘ

Cellular and Molecular Neuroscience 18
- Neuroscience and Neuropharmacology Research 17
- Neuroscience and Neural Engineering 5
Physiology 3
- Adenosine and Purinergic Signaling 3

Co-authors: Andrew Constanti (3 shared papers)Toshihiko Momiyama (2 shared papers)David A. Brown (5 shared papers)William H. Griffith (2 shared papers)T.G.J. Allen (2 shared papers)J. Robbins (2 shared papers)Urs Gerber (2 shared papers)Annmarie Surprenant (2 shared papers)
Journals: The Journal of Physiology (4 papers)European Journal of Neuroscience (3 papers)Pflügers Archiv - European Journal of Physiology (3 papers)British Journal of Pharmacology (3 papers)Scientific Reports (1 paper)
Partner nations: United Kingdom Germany United States

In The Last Decade

J. A. Sim

24 papers receiving 883 citations

Peers

Countries citing papers authored by J. A. Sim

Since Specialization

Citations

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

Fields of papers citing papers by J. A. Sim

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by J. A. Sim. 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 J. A. Sim. The network helps show where J. A. Sim may publish in the future.

Co-authors

The 25 scholars most cited alongside J. A. Sim, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with J. A. Sim Line = papers co-authored together J. A. Sim links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 25 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Calcium‐dependent potassium conductance in guinea‐pig olfactory cortex neurones in vitro. The Journal of Physiology ·Andrew Constanti, J. A. Sim	1987	149
2	Desensitization of the P2X₂ receptor controlled by alternative splicing FEBS Letters ·U. Brändle, Peter Spielmanns, Ralph Osteroth, J. A. Sim, Annmarie Surprenant, Gary Buell, J. P. Ruppersberg, P. K. Plinkert, Hans‐Peter Zenner, Elisabeth Glowatzki	1997	144
3	Amyloid-β and Alzheimer’s disease type pathology differentially affects the calcium signalling toolkit in astrocytes from different brain regions Cell Death and Disease ·Ambra A. Grolla, J. A. Sim, Dmitry Lim, José J. Rodrı́guez, Armando A. Genazzani, Alexei Verkhratsky	2013	83
4	The whole‐cell calcium current in acutely dissociated magnocellular cholinergic basal forebrain neurones of the rat. The Journal of Physiology ·T.G.J. Allen, J. A. Sim, David A. Brown	1993	57
5	Dopamine D1‐like receptor‐mediated presynaptic inhibition of excitatory transmission onto rat magnocellular basal forebrain neurones. The Journal of Physiology ·Toshihiko Momiyama, J. A. Sim, Dennis A. Brown	1996	49
6	P2X₁and P2X₄receptor currents in mouse macrophages British Journal of Pharmacology ·J. A. Sim, Chul‐Kee Park, Seog Bae Oh, Richard J. Evans, R. Alan North	2007	45
7	Modulation of Inhibitory Transmission by Dopamine in Rat Basal Forebrain Nuclei: Activation of Presynaptic D₁-like Dopaminergic Receptors Journal of Neuroscience ·Toshihiko Momiyama, J. A. Sim	1996	43
8	Muscarinic Inhibition of Glutamatergic Transmission onto Rat Magnocellular Basal Forebrain Neurons in a Thin‐slice Preparation European Journal of Neuroscience ·J. A. Sim, William H. Griffith	1996	38
9	Reduction of Potassium Conductances Mediated by Metabotropic Glutamate Receptors in Rat CA3 Pyramidal Cells Does Not Require Protein Kinase C or Protein Kinase A European Journal of Neuroscience ·Urs Gerber, J. A. Sim, B.H. Gähwiler	1992	35
10	A transient outward current in NG108-15 neuroblastoma � glioma hybrid cells Pflügers Archiv - European Journal of Physiology ·J. Robbins, J. A. Sim	1990	34
11	Muscarinic receptors mediating suppression of the M‐current in guinea‐pig olfactory cortex neurones may be of the M₂‐subtype British Journal of Pharmacology ·Andrew Constanti, J. A. Sim	1987	34
12	Submicromolar concentrations of zinc irreversibly reduce a calcium-dependent potassium current in rat hippocampal neurons in vitro Neuroscience ·J. A. Sim, Enrico Cherubini	1990	25
13	Ca²⁺‐inhibited non‐inactivating K⁺ channels in cultured rat hippocampal pyramidal neurones The Journal of Physiology ·A. A. Selyanko, J. A. Sim	1998	22
14	Single-channel activity correlated with medium-duration, Ca-dependent K current in cultured rat hippocampal neurones Neuroscience Letters ·Bradley E. Alger, J. A. Sim, David A. Brown	1994	20
15	Evidence Against a Role for Protein Kinase C in the Inhibition of the Calcium‐activated Potassium Current I_AHP by Muscarinic Stimulants in Rat Hippocampal Neurons European Journal of Neuroscience ·J. A. Sim, Urs Gerber, Thomas Knöpfel, David A. Brown	1992	19
16	Comparison of 4-aminopyridine and tetrahydroaminoacridine on basal forebrain neurons. Journal of Pharmacology and Experimental Therapeutics ·William H. Griffith, J. A. Sim	1990	18
17	Calcium-dependent inward currents in voltage-clamped guinea-pig olfactory cortex neurones Pflügers Archiv - European Journal of Physiology ·Andrew Constanti, M. Galvan, Peter Franz, J. A. Sim	1985	17
18	Increased P2X7R expression in atrial cardiomyocytes of caveolin-1 deficient mice Histochemistry and Cell Biology ·Kathrin Barth, Claudia Pfleger, Annett Linge, J. A. Sim, Annmarie Surprenant, Nadine Steinbronn, R. H. Strasser, Michael Kasper	2010	16
19	The naphthalenesulphonamide calmodulin antagonist W7 and its 5-iodo-1-C8 analogue inhibit potassium and calcium currents in NG108-15 neuroblastoma × glioma cells in a manner possibly unrelated to their antagonism of calmodulin Neuroscience Letters ·Malcolm P. Caulfield, J. Robbins, J. A. Sim, David A. Brown, S. Mac Neil, G. Michael Blackburn	1991	14
20	Morphological and Membrane Properties of Rat Magnocellular Basal Forebrain Neurons Maintained in Culture Journal of Neurophysiology ·J. A. Sim, T.G.J. Allen	1998	12

About J. A. Sim

J. A. Sim is a scholar working on Cellular and Molecular Neuroscience, Physiology, Sensory Systems, Molecular Biology and Dermatology, having authored 25 papers that have together received 902 indexed citations. Recurring topics across this work include Neuroscience and Neuropharmacology Research (17 papers), Ion channel regulation and function (14 papers), Neuroscience and Neural Engineering (5 papers), Nicotinic Acetylcholine Receptors Study (5 papers), Cardiac electrophysiology and arrhythmias (3 papers), Olfactory and Sensory Function Studies (3 papers), Adenosine and Purinergic Signaling (3 papers) and Receptor Mechanisms and Signaling (3 papers). The work is most often cited by research in Physiology (196 citations), Cellular and Molecular Neuroscience (590 citations), Endocrine and Autonomic Systems (129 citations), Sensory Systems (72 citations) and Neurology (76 citations). J. A. Sim has collaborated with scholars based in United Kingdom, Germany and United States. Frequent co-authors include Andrew Constanti, Toshihiko Momiyama, David A. Brown, William H. Griffith, T.G.J. Allen, J. Robbins, Urs Gerber, Annmarie Surprenant, Dennis A. Brown and Gary Buell. Their work appears in journals such as The Journal of Physiology, European Journal of Neuroscience, Pflügers Archiv - European Journal of Physiology, British Journal of Pharmacology and Scientific Reports.

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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