{"acknowledgement":"We thank Andrea Navas-Olive and Rebecca J. Morse-Mora for critically reading an earlier version of the manuscript. We also thank Florian Marr and Christina Altmutter for excellent technical assistance, Alois Schlögl for programming and data-handling assistance, Todor Asenov for technical support, and Eleftheria Kralli-Beller for manuscript editing. This research was supported by the Scientific Services Units (SSUs) of ISTA. We are particularly grateful for assistance from the Imaging and Optics Facility, Preclinical Facility, Lab Support Facility, and Miba Machine Shop. The project received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (grant agreement no. 692692 to P.J., Marie Skłodowska-Curie Actions Individual Fellowship no. 101026635 to J.F.W., and an ISTplus Fellowship through Marie Skłodowska-Curie grant agreement no. 754411 to V.V.-B.), the Austrian Science Fund (P 36232-B, PAT 4178023, and Cluster of Excellence 10.55776/COE16 to P.J.), and a CONACyT fellowship (289638 to V.V.-B.) and was supported by a non-stipendiary EMBO fellowship (ALTF 756–2020 to J.F.W.).","_id":"20099","month":"08","year":"2025","file":[{"file_size":27695214,"checksum":"556ff9760661ecd23949d75031043b1f","success":1,"content_type":"application/pdf","creator":"dernst","access_level":"open_access","file_name":"2025_CellReports_Watson.pdf","date_updated":"2025-08-04T06:53:07Z","date_created":"2025-08-04T06:53:07Z","file_id":"20106","relation":"main_file"}],"status":"public","abstract":[{"lang":"eng","text":"The hippocampus, critical for learning and memory, is dogmatically described as a trisynaptic circuit where dentate gyrus granule cells (GCs), CA3 pyramidal neurons (PNs), and CA1 PNs are serially connected. However, CA3 also forms an autoassociative network, and its PNs have diverse morphologies, intrinsic properties, and GC input levels. How PN subtypes compose this recurrent network is unknown. To determine the synaptic arrangement of identified CA3 PNs, we combine multicellular patch-clamp recording and post hoc morphological analysis in mouse hippocampal slices. PNs can be divided into distinct “superficial” and “deep” subclasses, the latter including previously reported “athorny” cells. Subclasses have distinct input-output transformations and asymmetric connectivity, which is more abundant from superficial to deep PNs, splitting CA3 locally into two parallel recurrent networks. Coincident spontaneous inhibition occurs frequently within but not between subclasses, implying subclass-specific inhibitory innervation. Our results suggest two separately controlled sublayers for parallel information processing in hippocampal CA3."}],"project":[{"_id":"25B7EB9E-B435-11E9-9278-68D0E5697425","grant_number":"692692","name":"Biophysics and circuit function of a giant cortical glutamatergic synapse","call_identifier":"H2020"},{"call_identifier":"H2020","name":"Synaptic computations of the hippocampal CA3 circuitry","_id":"fc2be41b-9c52-11eb-aca3-faa90aa144e9","grant_number":"101026635"},{"name":"Mechanisms of GABA release in hippocampal circuits","_id":"bd88be38-d553-11ed-ba76-81d5a70a6ef5","grant_number":"P36232"},{"call_identifier":"H2020","name":"ISTplus - Postdoctoral Fellowships","_id":"260C2330-B435-11E9-9278-68D0E5697425","grant_number":"754411"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","language":[{"iso":"eng"}],"OA_place":"publisher","intvolume":"        44","doi":"10.1016/j.celrep.2025.116080","citation":{"short":"J. Watson, V.M. Vargas Barroso, P.M. Jonas, Cell Reports 44 (2025).","ama":"Watson J, Vargas Barroso VM, Jonas PM. Cell-specific wiring routes information flow through hippocampal CA3. <i>Cell Reports</i>. 2025;44(8). doi:<a href=\"https://doi.org/10.1016/j.celrep.2025.116080\">10.1016/j.celrep.2025.116080</a>","chicago":"Watson, Jake, Victor M Vargas Barroso, and Peter M Jonas. “Cell-Specific Wiring Routes Information Flow through Hippocampal CA3.” <i>Cell Reports</i>. Elsevier, 2025. <a href=\"https://doi.org/10.1016/j.celrep.2025.116080\">https://doi.org/10.1016/j.celrep.2025.116080</a>.","apa":"Watson, J., Vargas Barroso, V. M., &#38; Jonas, P. M. (2025). Cell-specific wiring routes information flow through hippocampal CA3. <i>Cell Reports</i>. Elsevier. <a href=\"https://doi.org/10.1016/j.celrep.2025.116080\">https://doi.org/10.1016/j.celrep.2025.116080</a>","mla":"Watson, Jake, et al. “Cell-Specific Wiring Routes Information Flow through Hippocampal CA3.” <i>Cell Reports</i>, vol. 44, no. 8, 116080, Elsevier, 2025, doi:<a href=\"https://doi.org/10.1016/j.celrep.2025.116080\">10.1016/j.celrep.2025.116080</a>.","ieee":"J. Watson, V. M. Vargas Barroso, and P. M. Jonas, “Cell-specific wiring routes information flow through hippocampal CA3,” <i>Cell Reports</i>, vol. 44, no. 8. Elsevier, 2025.","ista":"Watson J, Vargas Barroso VM, Jonas PM. 2025. Cell-specific wiring routes information flow through hippocampal CA3. Cell Reports. 44(8), 116080."},"OA_type":"gold","author":[{"orcid":"0000-0002-8698-3823","full_name":"Watson, Jake","last_name":"Watson","first_name":"Jake","id":"63836096-4690-11EA-BD4E-32803DDC885E"},{"first_name":"Victor M","full_name":"Vargas Barroso, Victor M","last_name":"Vargas Barroso","id":"2F55A9DE-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Peter M","last_name":"Jonas","full_name":"Jonas, Peter M","orcid":"0000-0001-5001-4804","id":"353C1B58-F248-11E8-B48F-1D18A9856A87"}],"volume":44,"department":[{"_id":"PeJo"}],"article_type":"original","tmp":{"short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","image":"/images/cc_by.png"},"DOAJ_listed":"1","oa":1,"article_processing_charge":"Yes","corr_author":"1","file_date_updated":"2025-08-04T06:53:07Z","publication":"Cell Reports","day":"01","date_created":"2025-08-03T22:01:30Z","date_updated":"2025-08-04T06:55:21Z","ddc":["570"],"publication_identifier":{"eissn":["2211-1247"],"issn":["2639-1856"]},"issue":"8","type":"journal_article","date_published":"2025-08-01T00:00:00Z","ec_funded":1,"acknowledged_ssus":[{"_id":"Bio"},{"_id":"PreCl"},{"_id":"LifeSc"},{"_id":"M-Shop"}],"title":"Cell-specific wiring routes information flow through hippocampal CA3","publisher":"Elsevier","PlanS_conform":"1","has_accepted_license":"1","publication_status":"published","quality_controlled":"1","scopus_import":"1","article_number":"116080","oa_version":"Published Version"}