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Meter-scale heterostructure printing for high-toughness fiber electrodes in intelligent digital apparel

Nature Communications 2025年第1期16卷 1-10页

作者： Lee, Gun-Hee Lee, Yunheum Seo, Hyeonyeob Jo, Kyunghyun Yeo, Jinwook Kim, Semin Bae, Jae-Young Kim, Chul Majidi, Carmel Kang, Jiheong Kang, Seung-Kyun Ryu, Seunghwa Park, Seongjun Medical Research Center Seoul National University Seoul South Korea Departments of Cogno-Mechatronics Engineering and Optics & Mechatronics Engineering Pusan National University Busan South Korea Department of Bio and Brain Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon South Korea Program of Brain and Cognitive Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon South Korea Department of Mechanical Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon South Korea Graduate School of Semiconductor Technology Korea Advanced Institute of Science and Technology (KAIST) Daejeon South Korea Department of Materials Science and Engineering Seoul National University Seoul South Korea Department of Mechanical Engineering Carnegie Mellon University Pittsburgh PA United States Department of Chemistry Seoul National University Seoul Seoul South Korea School of Transdisciplinary Innovations Seoul National University Seoul South Korea Department of Biomedical Science College of Medicine Seoul National University Seoul South Korea Interdisciplinary Program in Bioengineering College of Engineering Seoul National University Seoul South Korea Department of Transdisciplinary Medicine Seoul National University Hospital Seoul South Korea

Intelligent digital apparel, which integrates electronic functionalities into clothing, represents the future of healthcare and ubiquitous control in wearable devices. Realizing such apparel necessitates developing meter-scale conductive fibers with high toughness, conductivity, stable conductance under deformation, and mechanical durability. In this study, we present a heterostructure printing method capable of producing meter-scale (~50 m) biphasic conductive fibers that meet these criteria. Our approach involves encapsulating deformable liquid metal particles (LMPs) within a functionalized thermoplastic polyurethane matrix. This encapsulation induces in situ assembly of LMPs during fiber formation, creating a heterostructure that seamlessly integrates the matrix’s durability with the LMPs’ superior electrical performance. Unlike rigid conductive materials, deformable LMPs offer stretchability and toughness with a low gauge factor. Through precise twisting using an engineered annealing machine, multiple fiber strands are transformed into robust, electrically stable meter-scale electrodes. This advancement enhances their practicality in various intelligent digital apparel applications, such as stretchable displays, wearable healthcare systems, and digital controls. © The Author(s) 2025.

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Spatiotemporal Learning of brain Dynamics from fMRI Using Frequency-Specific Multi-Band Attention for cognitive and Psychiatric Applications

arXiv

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arXiv 2025年

作者： Bae, Sangyoon Kwon, Junbeom Yoo, Shinjae Cha, Jiook Interdisciplinary Program in Artificial Intelligence Seoul National University Gwanak-ro 1 Seoul Seoul08826 Korea Republic of Department of Psychology University of Texas at Austin Dean Keeton Street AustinTX78712 United States Computational Science Initiative Brookhaven National Laboratory Brookhaven Avenue Shirley New York11967 United States Department of Psychology Seoul National University Gwanak-ro 1 Seoul Seoul08826 Korea Republic of Department of Brain and Cognitive Sciences Seoul National University Gwanak-ro 1 Seoul Seoul08826 Korea Republic of

A central challenge in neuroscience is understanding how the brain’s complex nonlinear dynamics give rise to emergent properties underlying adaptive cognition and behavior across spatial and temporal scales. These dynamics exhibit scale-free and multifractal properties, shaping the adaptive reconfiguration of neural networks. However, conventional neuroimaging models remain constrained by assumptions of linearity and stationarity, limiting their capacity to fully characterize these intricate processes. Transformer-based architectures, known for capturing long-range dependencies in sequential data, naturally align with the brain’s intrinsically hierarchical and temporal organization. Here, we introduce Multi-Band brain Net (MBBN), a transformer-based deep learning framework that explicitly models frequency-specific spatiotemporal brain dynamics from fMRI by integrating scale-free network principles with frequency-resolved multi-band self-attention mechanisms. Trained on three large-scale neuroimaging cohorts (UK Biobank, ABCD, ABIDE) totaling 45,951 individuals, MBBN reveals previously undetectable frequency-dependent intrinsic network interactions, shedding new light on distinct connectivity disruptions across psychiatric conditions (ADHD, ASD, depression). This extensive validation demonstrates robust generalizability and highlights core neural principles conserved across populations and developmental stages. Specifically, MBBN achieves up to 30.59% higher predictive accuracy than state-of-the-art deep learning and conventional connectome-based methods, demonstrating the advantage of frequency-informed spatiotemporal modeling in capturing latent neural computations. Furthermore, MBBN’s attention-based interpretability reveals novel frequency-specific biomarkers for neurodevelopmental disorders, offering mechanistic insights into the hierarchical organization of brain function. By providing a principled, interpretable framework for dissecting spatiotemporal learning

关键词： brain mapping

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64 – Neuropsychological correlates of N400 anomalies in patients with schizophrenia

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Schizophrenia Research 2008年 98卷 59-60页

作者： Jung, W.H. Shin, K.S. Kang, D.H. Kim, Y.Y. Kwon, J.S. Interdisciplinary Program in Cognitive and Brain Science Seoul National University Seoul Republic of Korea Department of Psychiatry Seoul National University College of Medicine Seoul Republic of Korea Clinical Cognitive Neuroscience Center Neuroscience Institute SNU-MRC Seoul Republic of Korea

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Self-packaged stretchable printed circuits with ligand-bound liquid metal particles in elastomer

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Nature Communications 2025年第1期16卷 1-11页

作者： Hyeonyeob Seo Gun-Hee Lee Dong-Yeong Kim Kum Seok Nam Jiwoo Park Yeonzu Son Semin Kim Congqi Yang Seongjun Park Joonhee Won Hyunjun Kim Steve Park Jae-Young Bae Seung-Kyun Kang Jiheong Kang Department of Bio and Brain Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon Republic of Korea Departments of Cogno-Mechatronics Engineering Pusan National University Busan Republic of Korea Departments of Optics and Mechatronics Engineering Pusan National University Busan Republic of Korea School of Electrical Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon Republic of Korea Program of Brain and Cognitive Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon South Korea Graduate School of Semiconductor Technology Korea Advanced Institute of Science and Technology (KAIST) Daejeon Republic of Korea Medical Research Center Seoul National University Seoul Republic of Korea Department of Biomedical Sciences College of Medicine Seoul National University Seoul Republic of Korea School of Transdisciplinary Innovations Seoul National University Seoul Republic of Korea Interdisciplinary Program in Bioengineering College of Engineering Seoul National University Seoul Republic of Korea Department of Transdisciplinary Medicine Seoul National University Hospital Seoul South Korea Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon Republic of Korea KAIST Institute for NanoCentury Daejeon Republic of Korea Department of Materials Science and Engineering Seoul National University Seoul Republic of Korea Department of Chemistry Seoul National University Seoul Republic of Korea

Packaging in stretchable electronics is crucial to protect components from environmental damage while preserving mechanical flexibility and providing electrical insulation. The conventional packaging process involves multiple steps that increase in complexity as the number of circuit layers multiply. In this study, we introduce a self-packaged stretchable printed circuit board enabled by the in situ phase separation of liquid metal particles (LMPs) within various polymer matrices during solution-based printing processes. The ligand-bound LMPs (LB-LMPs), engineered to inhibit oxide growth, undergo in situ sintering, prompting vertical phase separation. This synthesis strategy not only achieves high initial conductivity of the LMPs but also encapsulates them within the polymer matrix, preventing leakage and providing electrical insulation. Our method enables multi-layer circuit printing, eliminating the need for additional activation and packaging processes. Furthermore, by integrating conductive materials into packaging layers for selective electrical conductivity, vertical interconnect accesses and conductive pads can be formed, enabling large-scale, stretchable, and leakage-free multi-layer electrical circuits and bio-interfaces.

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West Side Story: Regional Inter-Troop Variation in Baboon Bark-Stripping at Gorongosa National Park, Mozambique

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American Journal of Biological Anthropology 2025年第1期187卷 e70057页

作者： Biro, Dora Muschinski, Jana Hammond, Philippa Bobe, René Bamford, Marion K. Capelli, Cristian d’Oliveira Coelho, João Farassi, Rassina Lüdecke, Tina Martinez, Felipe I. Mathe, Jacinto Silva, Maria Joana Ferreira Carvalho, Susana Department of Brain and Cognitive Sciences University of Rochester Rochester NY United States Primate Models for Behavioural Evolution Lab Institute of Human Sciences School of Anthropology and Museum Ethnography University of Oxford Oxford United Kingdom Interdisciplinary Center for Archaeology and Evolution of Human Behaviour (ICArEHB) University of Algarve Faro Portugal Department of Science Gorongosa National Park Sofala Mozambique Evolutionary Studies Institute University of the Witwatersrand Johannesburg South Africa Department of Chemistry Life Sciences and Environmental Sustainability University of Parma Parma Italy Centre for Functional Ecology (CFE) Department of Life Sciences Universidade de Coimbra Coimbra Portugal Departamento de Ciências da Vida Universidade de Coimbra Coimbra Portugal Emmy Noether Group for Hominin Meat Consumption Max Planck Institute for Chemistry Mainz Germany Escuela de Antropología Facultad de Ciencias Sociales Pontificia Universidad Católica de Chile Ciudad de México Chile CIBIO Centro de Investigação Em Biodiversidade e Recursos Genéticos InBIO Laboratório Associado Campus de Vairão Universidade do Porto Vairão Portugal BIOPOLIS Program in Genomics Biodiversity and Land Planning CIBIO Vairão Portugal One Organisms and Environment Division School of Biosciences Cardiff University Cardiff United Kingdom

Objectives: Baboons possess sophisticated physical and social cognitive abilities;hence, the lack of evidence to date of large-scale behavioral variation in these primates is puzzling. Here we studied a candidate for such variation—the stripping of bark from Acacia robusta trees for consumption of the sap and soft tissue underneath—in Gorongosa National Park, Mozambique. Materials and Methods: We surveyed an area inhabited by ~60 troops of chacma baboons, recording the availability and characteristics of the target trees, as well as the presence or absence of bark-stripping at 45 habitat plots distributed across a grid covering an area of ~300 km². Results: Camera traps confirmed the presence of baboons at all habitat plots, and we identified regional clumping in the distribution of the behavior, a pattern consistent across two consecutive years. Proportion and mean height/width of A. robusta did not predict whether bark-stripping behavior was present at a given site, nor did broader ecological variables such as habitat type and distance to the nearest water source. However, stripping sites had significantly higher numbers of A. robusta than non-stripping sites, and within a given bark-stripping site, baboons preferred to strip taller and wider trees among those available. Discussion: The prominent geographical clustering we uncovered may have been driven by opportunity (i.e., the prevalence of A. robusta at a given site), but is also consistent with a possible (non-mutually exclusive) cultural interpretation. We propose avenues for future research on Gorongosa's baboons to better quantify the relative contributions of ecology, genetics, and social learning to the prevalence of bark stripping. We also briefly consider the potential relevance of baboon bark stripping to elucidating early hominin foraging strategies. © 2025 Wiley Periodicals LLC.

关键词： a cacia bark-stripping behavioral variation chacma baboon habitat survey non-technological material traces

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Sex-mediated Gene Flow in Grayfoot Chacma Baboons (Papio ursinus griseipes) in Gorongosa National Park, Mozambique

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International Journal of Primatology 2025年 1-32页

作者： Ferreira da Silva, Maria Joana Tralma, Paula Colmonero-Costeira, Ivo Cravo-Mota, Mariana Farassi, Rassina Hammond, Philippa Lewis-Bevan, Lynn Bamford, Marion K. Biro, Dora Lüdecke, Tina Mathe, Jacinto Bobe, René Capelli, Cristian Carvalho, Susana Martínez, Felipe I. CIBIO Centro de Investigação Em Biodiversidade E Recursos Genéticos InBIO Laboratório Associado Universidade do Porto Campus de Vairão Vairão 4485 - 661 Portugal BIOPOLIS Program in Genomics Biodiversity and Land Planning CIBIO Campus de Vairão Vairão 4485 - 661 Portugal ONE Organisms and Environment Division School of Biosciences Cardiff University Sir Martin Evans Building The Museum Ave Cardiff CF10 3 AX United Kingdom Departamento de Arqueología Universidad Austral de Chile Los Ríos Chile CIAS Research Centre for Anthropology and Health Department of Life Sciences University of Coimbra Coimbra Portugal Departamento de Ciências da Vida Centre for Functional Ecology Universidade de Coimbra Coimbra Portugal Gorongosa National Park Sofala Mozambique Primate Models for Behavioural Evolution Lab Institute of Human Sciences School of Anthropology and Museum Ethnography University of Oxford Oxford United Kingdom Department of Biology University of Oxford Oxford United Kingdom Evolutionary Studies Institute University of the Witwatersrand Johannesburg South Africa Department of Brain and Cognitive Sciences University of Rochester Rochester 14627 NY United States Emmy Noether Group for Hominin Meat Consumption Max Planck Institute for Chemistry Mainz 55128 Germany Department of Science Gorongosa National Park Sofala Mozambique ICArEHB Interdisciplinary Centre for Archaeology and the Evolution of Human Behaviour Universidade do Algarve Faro Portugal Department of Chemistry Life Sciences and Environmental Sustainability University of Parma Parma Italy Escuela de Antropología Facultad de Ciencias Sociales Pontificia Universidad Católica de Chile Santiago Chile

Dispersal behavior influences gene flow and the spatial distribution of genetic diversity, which is crucial for a species' evolutionary trajectory and population persistence under environmental changes. We used gene flow as a proxy to investigate dispersal patterns in the grayfoot chacma baboon (Papio ursinus griseipes) in Gorongosa National Park (GNP), central Mozambique. The baboons inhabit a mosaic landscape with a seasonally variable environment. Thirty-two years ago, GNP was the epicenter of a major war that severely reduced apex predators, resulting in limited mammalian predation on baboons. We aimed to characterize genetic diversity, examine the extent and direction of sex-biased gene flow at different time frames and investigate changes in population size and recent migration events. We collected 121 non-invasive DNA samples and analyzed uni- and bi-parentally inherited markers, comprising mitochondrial DNA, autosomal and Y-linked microsatellites, at two geographic locations (GNP and Catapú Forest Reserve) 150 km apart. We observed high genetic diversity and no evidence of a recent population decline. We identified six mitochondrial haplotypes, including a genetically distinct one in Catapu Forest Reserve. We found molecular evidence for historical and current male-mediated gene flow and female philopatry. Our results highlight the resilience of dispersal patterns in Papio sp. in diverse and seasonally variable ecosystems which have been disturbed by anthropogenic activities. © The Author(s) 2025.

关键词： Behavioral flexibility Male-biased dispersal Southern Africa Warfare Zambezi River

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An octopamine-specific GRAB sensor reveals a monoamine relay circuitry that boosts aversive learning

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National science Review 2024年第5期11卷 186-201页

作者： Mingyue Lv Ruyi Cai Renzimo Zhang Xiju Xia Xuelin Li Yipan Wang Huan Wang Jianzhi Zeng Yifei Xue Lanqun Mao Yulong Li State Key Laboratory of Membrane Biology School of Life SciencesPeking University State Key Laboratory of Brain and Cognitive Science Institute of Biophysics Chinese Academy of Sciences PKU-IDG/Mc Govern Institute for Brain Research Yuanpei College Peking University Peking-Tsinghua Center for Life Sciences Academy for Advanced Interdisciplinary Studies Peking University Peking University–Tsinghua University–National Institute of Biological Sciences Joint Graduate Program Academy for Advanced Interdisciplinary Studies Peking University Institute of Molecular Physiology Shenzhen Bay Laboratory College of Chemistry Beijing Normal University Chinese Institute for Brain Research

Octopamine（OA）,analogous to norepinephrine in vertebrates,is an essential monoamine neurotransmitter in invertebrates that plays a significant role in various biological functions,including olfactory associative ***,the spatial and temporal dynamics of OA in vivo remain poorly understood due to limitations associated with the currently available methods used to detect *** overcome these limitations,we developed a genetically encoded GPCR activation-based（GRAB） OA sensor called *** sensor is highly selective for OA and exhibits a robust and rapid increase in fluorescence in response to extracellular *** GRABOA1.0,we monitored OA release in the Drosophila mushroom body（MB）,the fly's learning center,and found that OA is released in response to both odor and shock stimuli in an aversive learning *** OA release requires acetylcholine（ACh） released from Kenyon cells,signaling via nicotinic ACh ***,we discovered that OA amplifies aversive learning behavior by augmenting dopamine-mediated punishment signals via Octβ1R in dopaminergic neurons,leading to alterations in synaptic plasticity within the ***,our new GRABOA1.0sensor can be used to monitor OA release in real time under physiological conditions,providing valuable insights into the cellular and circuit mechanisms that underlie OA signaling.

关键词： octopamine dopamine GRAB sensor learning and memory

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Over the Quantum Rainbow: Explaining Hybrid Quantum Reinforcement Learning

Over the Quantum Rainbow: Explaining Hybrid Quantum Reinforc...

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Quantum Computing and Engineering (QCE), IEEE International Conference on

作者： Junghoon Park Jiook Cha Samuel Yen-Chi Chen Shinjae Yoo Huan-Hsin Tseng Interdisciplinary Program in Artificial Intelligence Seoul National University Department of Psychology Seoul National University Department of Brain and Cognitive Sciences Seoul National University Graduate School of Data Science Seoul National University Wells Fargo Computational Science Initiative Brookhaven National Laboratory

ISBN: (数字)9798331541378

ISBN: (纸本)9798331541385

In the realm of artificial intelligence, deep rein-forcement learning (RL) agents struggle with generalizability and require substantial computational resources, unlike humans who easily adapt and generalize across tasks. To address these challenges, we introduce Quantum Rainbow, a hybrid algorithm that leverages the neural mechanisms of human decision-making and the efficiency of quantum computing. Quantum Rainbow combines variational quantum circuits with the Rainbow Deep Q-Network (DQN) model to create a novel approach in rein-forcement learning that integrates quantum principles into deep learning paradigms. We evaluate our model using behavioral experiments through the Iowa Gambling Task and 4-Armed Bandit Task. Our investigations reveal a significant relationship between the architecture of quantum circuits and the performance of quantum RL agents. Specifically, using causal discovery methods, we demonstrate the critical role of quantum entanglement in enhancing model performance. These findings not only show promising results but also pave the way for future explorations into optimizing quantum circuit architectures for reinforcement learning applications. This study underscores the potential of quantum-enhanced algorithms to achieve “quantum advantage” by addressing fundamental limitations in conventional deep RL methods.

关键词： Analytical models Quantum computing Quantum algorithm Quantum advantage Quantum entanglement Computational modeling Reinforcement learning Quantum state Integrated circuit modeling Quantum circuit

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A nigroincertal projection mediates aversion and enhances coping responses to potential threat

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FASEB Journal 2023年第12期37卷 e23322-e23322页

作者： Ho, Ping-Chen Hsiao, Fu-Yun Chiu, Shi-Hong Lee, Syun-Ruei Yau, Hau-Jie The Laboratory for Neural Circuits and Behaviors Graduate Institute of Brain and Mind Sciences National Taiwan University Taipei Taiwan School of Medicine National Taiwan University Taipei Taiwan Neurobiology and Cognitive Science Center National Taiwan University Taipei Taiwan Taiwan International Graduate Program in Interdisciplinary Neuroscience National Taiwan University and Academia Sinica Taipei Taiwan Ph.D. Program in Translational Medicine National Taiwan University and Academia Sinica Taipei Taiwan

Recent studies have shown that the non-DA neurons in the ventral tegmental area (VTA) and substantia nigra (SN) not only modulate motivational behaviors but also regulate defensive behaviors. While zona incerta (ZI) is a threat-responsive substrate and receives innervations from the ventral midbrain, the function of the ventral midbrain-to-ZI connection remains poorly defined. Here, we demonstrate that the ZI receives heterogenous innervations from the ventral midbrain. By utilizing a retrograde AAV preferentially labeling non-DA neurons in the ventral midbrain, we found that ZI-projecting non-DA cells in the ventral midbrain are activated by restraint stress. We focused on the SN and found that SN-to-ZI GABAergic input is engaged by a predatory odor. Sustained pan-neuronal SN-to-ZI activation results in aversion and enhances defensive behaviors, likely through a disinhibition mechanism to recruit downstream brain regions that regulate defensive behaviors. Collectively, our results reveal a novel role of nigroincertal projection in mediating negative valence and regulating defensive behaviors. © 2023 Federation of American Societies for Experimental Biology.

关键词： defensive behavior stress substantia nigra ventral tegmental area zona increta

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brain MRI Synthesis from Amyloid PET/CT via Enhanced Denoising Diffusion Probabilistic Model

Brain MRI Synthesis from Amyloid PET/CT via Enhanced Denoisi...

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IEEE Symposium on Nuclear science (NSS/MIC)

作者： Y.J. Seol H.B. Yoo E.J. Yoon Y.K. Kim J.S. Lee Integrated Major in Innovative Medical Science Seoul National University Seoul Republic of Korea Seoul National University Interdisciplinary Program in Bioengineering Seoul Republic of Korea Department of Nuclear Medicine and WCU Department of Brain and Cognitive Sciences Seoul National University Seoul Republic of Korea Department of Nuclear Medicine Seoul National University-Seoul Metropolitan Government Boramae Medical Center Seoul Republic of Korea Department of Nuclear Medicine Seoul National University Seoul Republic of Korea Brightonix Imaging Inc Seoul Republic of Korea

ISBN: (数字)9798350388152

ISBN: (纸本)9798350388169

In this study, we presents a novel method for generating synthetic brain MRI images from amyloid PET/CT scans using an enhanced Denoising Diffusion Probabilistic Model (DDPM) conditioned with the joint probability distribution. We explored the use of early and late-phase 18 F -Florbetaben PET scans to guide the synthesis process within our DDPM framework, verifying that early-phase scans significantly improved the quality of synthetic MRI generation compared to other deep learning models. In addition, the proposed DDPMs using early-phase PET/CT suggest promising results, particularly for enhancing the accuracy of regional gray matter volume measurements and facilitating PET partial volume corrections in settings where traditional MRI is unavailable.

关键词： Temperature measurement Temperature distribution Microwave integrated circuits Semiconductor detectors Magnetic resonance imaging Volume measurement Noise reduction

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