Professor Tomas Ryan

• McQueen J, Ryan TJ, McKay S, Marwick K, Baxter P, Carpanini SM, Wishart TM, Gillingwater TH, Manson JC, Wyllie DJA, Grant SGN, McColl BW, Hardingham GE, Pro-death NMDA receptor signaling is promoted by the GluN2B C-terminus independently of Dapk1., eLife, 2017Journal Article, 2017
• Queenan BN, Ryan TJ, Gazzaniga MS, Gallistel CR, On the research of time past: the hunt for the substrate of memory., Annals of the New York Academy of Sciences, 2017Journal Article, 2017
• Ryan TJ, Tonegawa S., Rehebbilitating Memory., Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 41, (1), 2016, p370-371Journal Article, 2016, DOI
• Poo MM, Pignatelli M, Ryan TJ, Tonegawa S, Bonhoeffer T, Martin KC, Rudenko A, Tsai LH, Tsien RW, Fishell G, Mullins C, Gonçalves JT, Shtrahman M, Johnston ST, Gage FH, Dan Y, Long J, Buzsáki G, Stevens C., What is memory? The present state of the engram., BMC Biology, 14, 2016, p40Journal Article, 2016, DOI
• Tonegawa S, Pignatelli M, Roy DS, Ryan TJ., Memory engram storage and retrieval., Current Opinion in Neurobiology, 35, 2015, p101-109Journal Article, 2015, DOI
• Ramirez, S., Liu, X., Lin, P.-A., Suh, J., Pignatelli, M., Redondo, R.L., Ryan, T.J., Tonegawa, S., Creating a false memory in the hippocampus, Science, 341, (6144), 2013, p387-391Journal Article, 2013
• Ryan, T.J., Kopanitsa, M.V., Indersmitten, T., Nithianantharajah, J., Afinowi, N.O., Pettit, C., Stanford, L.E., Sprengel, R., Saksida, L.M., Bussey, T.J., O'Dell, T.J., Grant, S.G.N., Komiyama, N.H., Evolution of GluN2A/B cytoplasmic domains diversified vertebrate synaptic plasticity and behavior, Nature Neuroscience, 16, (1), 2013, p25-32Journal Article, 2013
• Martel, M.-A., Ryan, T., Bell, K., Fowler, J., McMahon, A., Al-Mubarak, B., Komiyama, N., Horsburgh, K., Kind, P., Grant, S., Wyllie, D., Hardingham, G., The Subtype of GluN2 C-terminal Domain Determines the Response to Excitotoxic Insults, Neuron, 74, (3), 2012, p543-556Journal Article, 2012
• Ryan, T.J., Grant, S.G.N., The origin and evolution of synapses, Nature Reviews Neuroscience, 10, (10), 2009, p701-712Journal Article, 2009
• Ryan, T.J., Emes, R.D., Grant, S.G.N., Komiyama, N.H., Evolution of NMDA receptor cytoplasmic interaction domains: Implications for organisation of synaptic signalling complexes, BMC Neuroscience, 9, 2008Journal Article, 2008
• Frank RA, Komiyama NH, Ryan TJ, Zhu F, O'Dell TJ, Grant SG., NMDA receptors are selectively partitioned into complexes and supercomplexes during synapse maturation., Nature Communications, 7, 2016, p11264Journal Article, 2016, DOI
• Ortega-de San Luis, C. and Ryan, T.J., United states of amnesia: rescuing memory loss from diverse conditions, Disease Models and Mechanisms, 11, (5), 2018Journal Article, 2018, DOI
• Ryan, T.J. and Roy, D.S. and Pignatelli, M. and Arons, A. and Tonegawa, S., Engram cells retain memory under retrograde amnesia, Science, 348, (6238), 2015, p1007-1013Journal Article, 2015, DOI
• Chapman DP, Sarah Power, Stefano Vicini, Ryan TJ, Burns MP, Amnesia after Repeated Head Impact Is Caused by Impaired Synaptic Plasticity in the Memory Engram., Journal of Neuroscience, 2024, pe1560232024Journal Article, 2024
• Clara Ortega-de San Luis, Maurizio Pezzoli, Esteban Urrieta, Tomás J. Ryan, Engram cell connectivity as a mechanism for information encoding and memory function, Current Biology, 33, (24), 2023, p5368-5380.e5Journal Article, 2023
• Sarah D. Power, Erika Stewart, Louisa G. Zielke, Eric P. Byrne, Aaron Douglas, Clara Ortega-de San Luis, Lydia Lynch, Tomás J. Ryan, Immune activation state modulates infant engram expression across development, Science Advances, 9, (45), 2023Journal Article, 2023
• Autore L, O'Leary JD, Ortega-de San Luis C, Ryan TJ, Adaptive expression of engrams by retroactive interference., Cell Reports, 42, (8), 2023, p112999Journal Article, 2023
• O'Leary T, Hauser TU, Ryan TJ, Rezaval C, FENS-Kavli Network of Excellence: Science needs strong European cohesion., European journal of neuroscience, 2022Journal Article, 2022, DOI
• Donato F, Ryan TJ, Framing the future of neuroscience in a time of great upheaval: Introducing a series of essays by the scholars of the FENS-Kavli network., European Journal of Neuroscience, 2022Journal Article, 2022, DOI
• La Terra D, Ann-Sofie Bjerre, Marius Rosier, Masuda R, Ryan TJ, Lucy Palmer, The role of higher-order thalamus during learning and correct performance in goal-directed behavior. , eLife, 11, 2022Journal Article, 2022
• Ortega-de San Luis C, Ryan TJ, Understanding the physical basis of memory: Molecular mechanisms of the engram., Journal of Biological Chemistry, 2022Journal Article, 2022, DOI
• Ryan TJ, Frankland PW, Forgetting as a form of adaptive engram cell plasticity., Nature Reviews Neuroscience, 2022Journal Article, 2022, DOI
• Ryan TJ, Ortega-de San Luis C, Pezzoli M, Sen S, Engram cell connectivity: an evolving substrate for information storage., Current Opinion in Neurobiology, 2021Journal Article, 2021, DOI
• Autore L, Ryan TJ, Memory: It's Not a Lie if You Believe It., Current Biology, 2020Journal Article, 2020, DOI
• Antoine Harel, Tomás J Ryan, The memory toolbox: how genetic manipulations and cellular imaging are transforming our understanding of learned information, Current Opinion in Behavioral Sciences, 32, 2020, p136--147Journal Article, 2020, DOI
• O'Sullivan FM, Ryan TJ, If Engrams Are the Answer, What Is the Question?, Engrams: A Window into the Memory Trace, 2024, p273-302Journal Article, 2024
• Memory and Instinct as a Continuum of Information Storage in, editor(s)David Poeppel, George R. Mangun, Michael S. Gazzaniga , The Cognitive Neurosciences (Sixth Edition), MIT Press, 2020, [Ryan. T.J.]Book Chapter, 2020
• Erik Benson, Tommy Regen, Taras Kreslavsky, Ken-ichi Hanada, Leo Hanke, Iris Rocamonde-Lago, Tomás John Ryan, Thomas Heinrich Winkler, Jan Kisielow, Anatoly Dubnovitsky, Vivianne Malmstrom, Ari Waisman, Thomas Krey, Kewei Ye, Josefine Dunst, Anja Kramer, Lisa Vogg, Yuanyuan You, Amanda Borgenstam, Fanxi Meng, Nimmy Francis, Valentin Zollner, Stefanie Köhler, Direct interaction of V"7 TCRs with IL17RA drives the differentiation of TH1-like ""T cells, Science, 393, (6808), 2026Journal Article, 2026
• Louisa G. Zielke, Tomás J. Ryan, Rescuing specific memories by rejuvenating engram cells, Neuron, 114, (6), 2026, p975-977Journal Article, 2026
• Erika Stewart, Jozsef Csicsvari, Louisa G. Zielke, Antje R. de Boer, Gabrielle Guillaume Boulaire, Sarah D. Power, Tomás J. Ryan, Microglial activity during postnatal development is required for infantile amnesia in mice, PLOS Biology, 24, (1), 2026, pe3003538Journal Article, 2026
• Livia Autore, Michael R. Drew, Tomás J. Ryan, The cost of remembering: engram competition as a flexible mechanism of forgetting, Trends in Neurosciences, 48, (10), 2025, p728-738Journal Article, 2025
• E. Stewart, T.J. Ryan, Neuro-immune interactions in memory, Neurobiology of Learning and Memory, 221, 2025, p108077Journal Article, 2025
• Muñoz Zamora A, Douglas A, Conway PB, Urrieta E, Moniz T, O'Leary JD, Marks L, Denny CA, Ortega-de San Luis C, Lynch L, Ryan TJ, Cold memories control whole-body thermoregulatory responses., Nature, 641, (8064), 2025, p942-951Journal Article, 2025
• James D O'Leary, Rasmus Bruckner, Livia Autore, Tomás J Ryan, Natural forgetting reversibly modulates engram expression, eLife, 12, 2024Journal Article, 2024
• Tomás J. Ryan, Memory and Instinct as a Continuum of Information Storage, The Cognitive Neurosciences, 2020, p207-216Book Chapter, 2020
• Pignatelli M, Ryan TJ, Roy DS, Lovett C, Smith LM, Muralidhar S, Tonegawa S, Engram Cell Excitability State Determines the Efficacy of Memory Retrieval., Neuron, 2018Journal Article, 2018
• McKay S, Ryan TJ, McQueen J, Indersmitten T, Marwick KFM, Hasel P, Kopanitsa MV, Baxter PS, Martel MA, Kind PC, Wyllie DJA, O'Dell TJ, Grant SGN, Komiyama NH, The Developmental Shift of NMDA Receptor Composition Proceeds Independently of GluN2 Subunit-Specific GluN2 C-Terminal Sequences., Cell reports, 2018Journal Article, 2018
• Ortega-de San Luis C, Ryan TJ, United states of amnesia: rescuing memory loss from diverse conditions., Disease models & mechanisms, 2018Journal Article, 2018
• Daniel C. Burnston, Tomás J. Ryan, An alternative to encoding for thinking about neural representation, Philosophy and the Mind Sciences, 7, (1), 2026Journal Article, 2026
• Charlie Lovatt, Thomas O"Sullivan, Clara Ortega-de San Luis, Tomás J. Ryan, René A.W. Frank, Memory engram synapse 3D macromolecular architecture visualized by cryoCLEM-guided cryoET, Structure, 34, (1), 2026, p100-112.e3Journal Article, 2026
• Paul B. Conway, Livia Autore, Andrea Muñoz Zamora, Antoine Harel, Zijun Wang, Arman A. Tavallaei, Stephen M. Winston, Clara Ortega-de San Luis, James D. O"Leary, Mark A. Brimble, Gisella Vetere, Tomás J. Ryan, Extinction and subsequent updating of innate fear responses to a visual looming stimulus rely on hippocampus-dependent mechanisms, PLOS Biology, 23, (9), 2025, pe3003391Journal Article, 2025

• Joaquin Matias Alfei Palloni, Ralph R. Miller, Tomás Ryan, and Gonzalo P. Urcelay, Rethinking Memory Impairments: Retrieval Failure, PsyArXiv Preprints, 2024, phttps://doi.org/10.31234/osf.iJournal Article
• Marius Rosier; George Stuyt; Luca Godenzini; Tomás J. Ryan*; Lucy M. Palmer*, Learning-induced plasticity decreases cortical engram cell dendritic excitability during memory recall, bioRxiv, 2025Preprint
• Marius Rosier; George Stuyt; Luca Godenzini; Tomás J. Ryan*; Lucy M. Palmer*, Learning-induced plasticity decreases cortical engram cell dendritic excitability during memory recall, bioRxiv, 2025Preprint
• Marius Rosier; George Stuyt; Luca Godenzini; Tomás J. Ryan*; Lucy M. Palmer*, Learning-induced plasticity decreases cortical engram cell dendritic excitability during memory recall, bioRxiv, 2025Preprint
• Aaron Douglas, Andrea Muñoz Zamora, Paul Conway, Esteban Urrieta, Lydia Lynch, Tomás J Ryan, Sickness engrams modulate anticipatory immune responses, bioRxiv, 2025Preprint

Neurosciences, Clinical and health psychology,

• Wellcome Trust PhD Studentship (4 years) October 2005 - September 2009
• European Research Council (ERC) Staring Grant, European Union February 2017 - January 2023
• CIFAR-Azrieli Global Scholar, Canadian Institute for Advanced Research, Canada May 2021 - April 2024
• Scialog Fellow, Research Corporation for Science Advancement (RCSA), USA March 2022 - November 2024
• Jacobs Foundation Research Fellowship January 2017 - January 2020
• President of Ireland Young Researcher Award (PIYRA), Science Foundation Ireland, Ireland December 2016 - November 2022
• Junior Research Fellowship, Wolfson College, University of Cambridge, UK September 2009 - September 2010
• Discovery Early Career Research Award (DECRA), National Health and Medical Research Council, Australia (declined) January 2017
• FENS-Kavli Scholar, FENS-Kavli Network of Excellence, European Union September 2018 - August 2023
• Fellow of the CIFAR program in Child & Brain Development, Canadian Institute for Advanced Research, Canada April 2025 - March 2030
• Lister Institute Research Prize, Lister Institute of Preventative Medicine, UK September 2021
• Early Career Researcher of the Year Award, Science Foundation Ireland, Ireland October 2018
• Elected to Fellowship, Trinity College Dublin, Ireland May 2022
• Frontiers for the Future Award, Research Ireland, Ireland September 2025 - August 2030

• FENS-Kavli Network of Excellence (Federation of European Neuroscience Societies and Kavli Foundation) August 2023
• Molecular and Cellular Cognition Society (MCCS), USA Present
• British Neuroscience Association (BNA), UK September 2009
• Brain and Behavioural Sciences Discovery Award Advisory Group, Wellcome Trust, UK August 2029
• Society for Neuroscience, USA Present
• Neuroscience Ireland Present
• FENS-Kavli Alumni Present
• Canadian Institute for Advanced Research (CIFAR), Canada Present
• Eastern Psychological Association (EPA), USA March 2016

• Chair of Federation of European Neuroscience Societies (FENS) Advocacy Committee: https://www.fens.org/about-fens/our-organisation/fens-committees/advocacy-committee October 2024 - September 2027
• Speaker, Brain Innovation Days, Fast-tracking brain innovation in times of COVID-19, European Brain Council event, Brussels and online. https://live.eventtia.com/en/brain April 2021
• Member of the FENS (Federation of European Neuroscience Societies) Program Committee, FENS Forum 2024, Vienna, Austria. 2022 - 2024
• Board Member, European Brain Council (EBC): https://www.braincouncil.eu/ebc-board/ October 2024 - September 2027
• Secretary, Molecular and Cellular Cognition Society, USA. January 2023 - September 2023
• Treasurer, FENS-Kavli Alumni September 2025 - August 2027
• International Member of the US Society for Neuroscience (SFN)'s Government and Public Affairs Committee https://www.sfn.org/about/volunteer/committees/government-and-public-affairs-committee September 2024 - October 2026
• President, Molecular and Cellular Cognition Society, USA. October 2024 - September 2025
• Chair, FENS-Kavli Network of Excellence, Europe Union. August 2019 - December 2021
• Reviewing Editor, eLife 2024 - Present
• Past-Chair, FENS-Kavli Network of Excellence, European Union. December 2021 - September 2023
• Organizer of FENS Special Interest Event SiE15: Research Funding in Europe Post-COVID-19, FENS Virtual Forum 2020. July 2020
• Past-President, Molecular and Cellular Cognition Society, USA. October 2025 - November 2026
• Co-Organizer (with Prof. Timothy O'Leary (University of Cambridge), Prof. Tobias Hauser (Universiy College London), and Dr. Carolina Rezaval (University of Birmingham) of FENS Special Interest Event SiE04 - Strength through cohesion: protecting European neuroscience in a turbulent world, FENS Forum 2022, Paris, France. https://forum2022.fensforum.org/event/sie4-strength-through-cohesion-protecting-european-neuroscience-in-a-turbulent-world-1215-1315/ July 2022
• Brain and Behavioural Sciences Discovery Award Advisory Group, Wellcome Trust, UK August 2026 - July 2029
• Co-Editor (with Prof. Charan Ranganath, UC Davis) of Learning and Memory Section of 6th Edition of The Cognitive Neurosciences textbook (MIT Press, USA), published in 2020 https://mitpress.mit.edu/9780262043250/the-cognitive-neurosciences/ May 2017 - September 2019
• President Elect, Molecular and Cellular Cognition Society, USA. October 2023 - September 2024
• FENS-Kavli Network of Excellence - Selection Committee April 2026