{"title":"Learning in the overparametrized brain","authors":"N. Alex Cayco-Gajic","doi":"10.1038/s41583-025-01010-4","DOIUrl":"10.1038/s41583-025-01010-4","url":null,"abstract":"In this Journal Club, N. Alex Cayco-Gajic discusses a study published in 2004 that modelled the pyloric network of the lobster stomatogastric ganglion.","PeriodicalId":49142,"journal":{"name":"Nature Reviews Neuroscience","volume":"27 2","pages":"85-85"},"PeriodicalIF":26.7,"publicationDate":"2025-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145680118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"How distributed is the brain-wide network that is recruited for cognition?","authors":"Matthew C. Rosen, David J. Freedman","doi":"10.1038/s41583-025-00992-5","DOIUrl":"10.1038/s41583-025-00992-5","url":null,"abstract":"Half a century of neurophysiological recordings from single electrodes established a ‘localized’ viewpoint on function in the brain — that complex behaviour results from computations that are carried out and representations that occur across distinct brain areas, each of which has a specialized role. Data generated from new techniques for specific, high-throughput measurement of neuronal activity and behaviour in rodents have prompted an alternative viewpoint, which posits that neural encoding of behavioural variables is distributed across a wide range of areas: ‘everything, everywhere, all at once’. After briefly introducing these paradigms, we evaluate which of them better describes cognition — the manipulation of internal variables that enables flexible behaviour. Measurements of neuronal activity in both rodents and primates suggest that cognitive variables are reflected broadly but not ubiquitously across the brain, including, to a surprising degree, in regions engaged in controlling movement. We close by discussing why cognitive signals may appear in such areas, as well as the factors that affect the breadth of the brain-wide network that is recruited for cognition. Both localized and distributed views on the functional organization of the brain have been put forward. In this Perspective, Rosen and Freedman examine the degree to which these two views account for abstract cognition.","PeriodicalId":49142,"journal":{"name":"Nature Reviews Neuroscience","volume":"27 2","pages":"138-150"},"PeriodicalIF":26.7,"publicationDate":"2025-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145664511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Tiny recurrent neural networks for discovering cognitive strategies","authors":"Li Ji-An","doi":"10.1038/s41583-025-01007-z","DOIUrl":"10.1038/s41583-025-01007-z","url":null,"abstract":"In this Tools of the Trade article, Li Ji-An describes tiny recurrent neural networks, an interpretable and flexible modelling framework for discovering cognitive algorithms that govern biological decision-making.","PeriodicalId":49142,"journal":{"name":"Nature Reviews Neuroscience","volume":"27 2","pages":"83-83"},"PeriodicalIF":26.7,"publicationDate":"2025-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145674445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Joint modelling of brain and behaviour dynamics with artificial intelligence","authors":"Mackenzie Weygandt Mathis, Alexander Mathis","doi":"10.1038/s41583-025-00996-1","DOIUrl":"10.1038/s41583-025-00996-1","url":null,"abstract":"Artificial intelligence has created tremendous advances for many scientific and engineering applications. In this Review, we synthesize recent advances in joint brain–behaviour modelling of neural and behavioural data, with a focus on methodological innovations, scientific and technical motivations, and key areas for future innovation. We discuss how these tools reveal the shared structure between the brain and behaviour and how they can be used for both science and engineering aims. We highlight how three broad classes with differing aims — discriminative, generative and contrastive — are shaping joint modelling approaches. We also discuss recent advances in behavioural analysis approaches, including pose estimation, hierarchical behaviour analysis and multimodal-language models, which could influence the next generation of joint models. Finally, we argue that considering not only the performance of models but also their trustworthiness and interpretability metrics can help to advance the development of joint modelling approaches. Artificial intelligence is rapidly advancing our mechanistic understanding of the shared structure between the brain and higher-order behaviours. In this Review, Mathis and Mathis synthesize state-of-the-art methods in joint modelling of neural activity and behaviour, emphasizing both the technical innovations and the conceptual frameworks driving progress in this rapidly evolving field.","PeriodicalId":49142,"journal":{"name":"Nature Reviews Neuroscience","volume":"27 2","pages":"87-100"},"PeriodicalIF":26.7,"publicationDate":"2025-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145664345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Top-down and bottom-up neuroscience as collections of practices","authors":"Sander van Bree, David Poeppel","doi":"10.1038/s41583-025-01004-2","DOIUrl":"10.1038/s41583-025-01004-2","url":null,"abstract":"","PeriodicalId":49142,"journal":{"name":"Nature Reviews Neuroscience","volume":"27 1","pages":"79-79"},"PeriodicalIF":26.7,"publicationDate":"2025-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145656989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Reply to ‘Top-down and bottom-up neuroscience as collections of practices’","authors":"Andrea I. Luppi, Fernando E. Rosas","doi":"10.1038/s41583-025-01006-0","DOIUrl":"10.1038/s41583-025-01006-0","url":null,"abstract":"","PeriodicalId":49142,"journal":{"name":"Nature Reviews Neuroscience","volume":"27 1","pages":"80-80"},"PeriodicalIF":26.7,"publicationDate":"2025-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145656990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Oleg Butovsky, Neta Rosenzweig, Kilian L. Kleemann, Mehdi Jorfi, Vijay K. Kuchroo, Rudolph E. Tanzi, Howard L. Weiner
{"title":"Immune dysfunction in Alzheimer disease","authors":"Oleg Butovsky, Neta Rosenzweig, Kilian L. Kleemann, Mehdi Jorfi, Vijay K. Kuchroo, Rudolph E. Tanzi, Howard L. Weiner","doi":"10.1038/s41583-025-00997-0","DOIUrl":"10.1038/s41583-025-00997-0","url":null,"abstract":"Emerging evidence highlights the crucial role of peripheral immune cells in maintaining brain homeostasis and their influence on the pathology of Alzheimer disease (AD). Genome-wide association studies have identified numerous AD risk variants in genes expressed by immune cells, implicating innate and adaptive immune pathways in disease progression. Advances in neuroimmunology have revealed that immune cell crosstalk involving T cells, B cells, monocytes and/or macrophages and neutrophils can modulate the hallmark features of AD, including amyloid plaque accumulation, tau pathology and chronic neuroinflammation. Mechanistic insights suggest that chronic peripheral inflammation, immune exhaustion, metabolic dysfunction and epigenetic reprogramming exacerbate neurodegeneration in AD by promoting toxic inflammation and impairing protein clearance in the brain. These findings may catalyse the development of novel immunomodulatory strategies, such as immune checkpoint inhibition and cytokine targeting, among others, for AD. This Review examines peripheral immune alterations in AD, evaluates related therapeutic opportunities and highlights key knowledge gaps, particularly the need for human-derived data to advance translational progress. Future research should prioritize personalized approaches that integrate genetic risk, immune profiling and ageing to inform next-generation therapies for AD. The importance of peripheral immunity in Alzheimer disease has gained much traction in recent years, mainly due to multiple genome-wide association studies identifying risk loci associated with genes expressed predominantly in the periphery. This review discusses the importance of peripheral immune cells in shaping brain physiology and their role in Alzheimer disease.","PeriodicalId":49142,"journal":{"name":"Nature Reviews Neuroscience","volume":"27 3","pages":"196-218"},"PeriodicalIF":26.7,"publicationDate":"2025-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145614005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Mixed selectivity: when neurons stopped looking like specialists","authors":"Fanny Cazettes","doi":"10.1038/s41583-025-01009-x","DOIUrl":"10.1038/s41583-025-01009-x","url":null,"abstract":"In this Journal Club, Fanny Cazettes highlights a 2013 paper that demonstrated the importance of mixed selectivity for cortical computations.","PeriodicalId":49142,"journal":{"name":"Nature Reviews Neuroscience","volume":"27 2","pages":"84-84"},"PeriodicalIF":26.7,"publicationDate":"2025-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145599443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The on-site, on-demand, neuronal gene machine","authors":"Matthew L. Kraushar","doi":"10.1038/s41583-025-01005-1","DOIUrl":"10.1038/s41583-025-01005-1","url":null,"abstract":"In this Journal Club, Matthew Kraushar discusses a study published in 1996 that found a role for local protein translation in hippocampal synaptic plasticity.","PeriodicalId":49142,"journal":{"name":"Nature Reviews Neuroscience","volume":"27 1","pages":"6-6"},"PeriodicalIF":26.7,"publicationDate":"2025-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145545360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Edoardo Chidichimo, Andrea I. Luppi, Pedro A. M. Mediano, Victoria Leong, Guillaume Dumas, Andrés Canales-Johnson, Richard A. I. Bethlehem
{"title":"Towards an informational account of interpersonal coordination","authors":"Edoardo Chidichimo, Andrea I. Luppi, Pedro A. M. Mediano, Victoria Leong, Guillaume Dumas, Andrés Canales-Johnson, Richard A. I. Bethlehem","doi":"10.1038/s41583-025-00989-0","DOIUrl":"10.1038/s41583-025-00989-0","url":null,"abstract":"Human sociality is grounded in the dynamic coordination of individuals as they interact with one another. Indeed, various levels of interpersonal coordination — neural, behavioural, physiological, affective, linguistic — are hallmarks of successful social communication and cooperation. However, describing these complex, interdependent dynamics has been limited by current methodological approaches, owing to a restrictive repertoire of tools and the absence of a unified, standardized methodological framework. Here, we identify information theory — the mathematical theory of communication — as a particularly well-suited conceptual framework to address this shortfall, given its appropriate sensitivity to complex dynamics, including potential nonlinearity and higher-order interactions, and its data-driven, model-agnostic foundations. With deep roots in computational, cognitive and systems neuroscience, the formal introduction of information-theoretic quantities and methods into the study of interpersonal coordination is perhaps overdue. In this Perspective, we advance the case for a unified information-theoretic framework for the field while paving the way for a new generation of empirically testable, theoretically grounded research questions. Methodological shortcomings have constrained studies describing the complex dynamics of interpersonal coordination, which is essential to human sociality. In this Perspective, Chidichimo et al. advance the case for the formal introduction of information-theoretic quantities and methods to overcome existing limitations in studies of naturalistic human interactions.","PeriodicalId":49142,"journal":{"name":"Nature Reviews Neuroscience","volume":"27 2","pages":"121-137"},"PeriodicalIF":26.7,"publicationDate":"2025-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145536185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}