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Advancing brain tumor diagnostics and therapy (2023–2025): A global bibliometric perspective on innovation and collaboration 推进脑肿瘤诊断和治疗(2023-2025):创新和合作的全球文献计量学视角
Pub Date : 2025-12-21 DOI: 10.1016/j.neuri.2025.100250
Rosnah Sutan , Afzal Hussain , Rizal Abdul Manaf , Zaleha Md Isa , Ashfaq Hussain

Background

Brain tumors present a daunting clinical challenge, necessitating unwavering innovation in diagnostics, imaging, and therapeutics. Emerging advances in artificial intelligence (AI), molecular biomarkers, and neuroimaging have transformed the research landscape.

Objective

The current research conducted bibliometric analysis to map global research trends in brain tumor diagnosis, imaging, and treatment strategies between 2023 and 2025, with a particular focus on AI applicability and biomarker-driven precision medicine.

Methods

A systematic literature search of the Scopus database was performed in July 2025 for English original research articles between 2023 and 2025. The search keywords included: “brain tumor,” “glioma,” “glioblastoma,” “meningioma,” “astrocytoma,” “diagnosis,” “MRI,” “CT,” “artificial intelligence,” “deep learning,” “machine learning,” “radiotherapy,” “chemotherapy,” “surgery,” “biomarkers,” “prognosis,” “segmentation,” and “classification.” Bibliographic data were analyzed using Biblioshiny to explore publication output, citation impact, prominent authors, institutional productivity, keyword trends, and collaboration networks.

Results

The analysis included 23,496 papers from over 93,000 researchers. It indicated a research boom in AI-enhanced diagnostics, radiomics, and individualized treatments. Both China and the U.S. were leading producers, but the U.S. recorded greater international collaboration and citation impact. Glioma classification, MRI-based segmentation, and deep learning applications were the most common topics. Collaboration networks were geographically focused, with a particular concentration in East Asia.

Conclusion

Brain tumor research is rapidly moving towards precision and AI-driven strategies. While there is a growing scientific output, more international and intersectoral collaboration is needed to make these advances translate to equitable clinical gain.
脑肿瘤是一项令人生畏的临床挑战,需要在诊断、成像和治疗方面进行坚定不移的创新。人工智能(AI)、分子生物标志物和神经影像学的新兴进展已经改变了研究领域。本研究通过文献计量学分析,绘制2023年至2025年全球脑肿瘤诊断、成像和治疗策略的研究趋势,特别关注人工智能的适用性和生物标志物驱动的精准医学。方法于2025年7月对Scopus数据库中2023 - 2025年间的英文原创研究论文进行系统的文献检索。搜索关键词包括:“脑肿瘤”、“胶质瘤”、“胶质母细胞瘤”、“脑膜瘤”、“星形细胞瘤”、“诊断”、“MRI”、“CT”、“人工智能”、“深度学习”、“机器学习”、“放疗”、“化疗”、“手术”、“生物标志物”、“预后”、“分割”和“分类”。使用Biblioshiny对书目数据进行分析,以探索出版物产出、引文影响、知名作者、机构生产力、关键词趋势和合作网络。该分析包括来自93,000多名研究人员的23,496篇论文。它预示着人工智能增强诊断、放射组学和个性化治疗方面的研究热潮。中国和美国都是主要生产国,但美国的国际合作和引用影响更大。胶质瘤分类、基于mri的分割和深度学习应用是最常见的主题。协作网络在地理上是集中的,尤其集中在东亚。结论脑肿瘤研究正迅速向精准化和人工智能驱动的方向发展。虽然科学产出不断增加,但需要更多的国际和部门间合作,以使这些进展转化为公平的临床收益。
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引用次数: 0
Advances in deep learning for multimodal brain imaging: A comprehensive survey 深度学习多模态脑成像研究进展综述
Pub Date : 2025-12-19 DOI: 10.1016/j.neuri.2025.100252
Saif M. Balsabti , Rasool M. Al-Gburi , Raid gaib , Ali Mustafa , Shaimaa Khamees Ahmed , Ali Mahmoud Issa , Taha Mahmoud Al-Naimi , Rawan AlSaad , Ali M. Elhenidy
In recent years, the field of medical brain imaging has witnessed remarkable advancements with the integration of artificial intelligence (AI) and deep learning techniques. Traditional unimodal imaging methods, such as MRI and CT, often fall short in providing comprehensive insights into neurological disorders. To address these limitations, multimodal imaging, which combines various imaging modalities like MRI, CT, PET, and SPECT, has emerged as a powerful tool for enhanced diagnosis and treatment planning. This survey presents an in-depth review of the state-of-the-art deep learning models, including Convolutional Neural Networks (CNNs) and Vision Transformers (ViTs), used for brain tumor classification, segmentation, forecasting, and object detection. We also explore the potential of hybrid models that integrate machine learning and deep learning approaches. Furthermore, we highlight the significant developments in multimodal brain imaging techniques from 2019 to 2024 and discuss the future research directions needed to advance this field. By synthesizing the latest findings, this survey aims to provide a comprehensive understanding of the current landscape and future possibilities in multimodal medical brain imaging.
近年来,随着人工智能(AI)和深度学习技术的融合,医学脑成像领域取得了显著进展。传统的单峰成像方法,如MRI和CT,往往无法提供对神经系统疾病的全面了解。为了解决这些限制,多模态成像,结合了各种成像方式,如MRI、CT、PET和SPECT,已经成为增强诊断和治疗计划的有力工具。本调查深入回顾了最先进的深度学习模型,包括卷积神经网络(cnn)和视觉变压器(ViTs),用于脑肿瘤分类、分割、预测和目标检测。我们还探索了整合机器学习和深度学习方法的混合模型的潜力。此外,我们重点介绍了2019年至2024年多模态脑成像技术的重大发展,并讨论了未来需要推进该领域的研究方向。通过综合最新研究结果,本调查旨在提供对多模态医学脑成像的现状和未来可能性的全面了解。
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引用次数: 0
15 Years of optimizers in medical deep learning: A systematic review 15年的医学深度学习优化器:系统回顾
Pub Date : 2025-12-19 DOI: 10.1016/j.neuri.2025.100249
Selorm Adablanu , Utpal Barman , Dulumani Das
Optimization algorithms are pivotal in training deep learning (DL) models for medical imaging, determining how efficiently models learn, generalize, and perform across modalities. This systematic review analyzed 69 peer-reviewed studies (2010–2025) on optimizer performance in classification, segmentation, and object detection tasks using MRI, CT, X-ray, ultrasound, histopathology, and ECG data, following PRISMA 2020 guidelines. Adaptive optimizers such as Adam and its variants were most common, offering rapid convergence in CNN-based classification, whereas SGD and momentum-based methods yielded stronger generalization in large-scale segmentation. Emerging techniques—Sharpness-Aware Minimization (SAM), Ranger, and AdamW—improved robustness under domain shift or noisy conditions. Hybrid and metaheuristic optimizers provided marginal accuracy gains but at higher computational cost. Common limitations included inconsistent hyperparameter reporting, limited external validation, and dataset bias toward North American cohorts. Optimizer effectiveness was found to be task- and architecture-dependent: adaptive methods suit small or noisy datasets, while momentum-based and hybrid methods enhance generalization for complex imaging. Future studies should emphasize standardized evaluation, transparent reporting, and diverse data to enable equitable and reproducible deployment of medical AI.
优化算法是训练医学成像深度学习(DL)模型的关键,它决定了模型学习、泛化和跨模式执行的效率。本系统综述分析了69项同行评议的研究(2010-2025),根据PRISMA 2020指南,使用MRI、CT、x射线、超声、组织病理学和ECG数据,分析了优化器在分类、分割和目标检测任务中的性能。Adam及其变体等自适应优化器是最常见的,在基于cnn的分类中提供快速收敛,而SGD和基于动量的方法在大规模分割中产生了更强的泛化。新兴技术——锐度感知最小化(SAM)、Ranger和adamw——提高了在域移位或噪声条件下的鲁棒性。混合和元启发式优化器提供了边际精度增益,但计算成本较高。常见的限制包括不一致的超参数报告,有限的外部验证,以及对北美队列的数据集偏差。优化器的有效性取决于任务和架构:自适应方法适用于小数据集或有噪声的数据集,而基于动量和混合方法增强了复杂成像的泛化。未来的研究应强调标准化评估、透明报告和多样化数据,以实现医疗人工智能的公平和可重复部署。
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引用次数: 0
Exploring the effects of wavelet types and windowing on EMG-based IONM through deep learning architectures 通过深度学习架构探索小波类型和窗口对基于肌电图的IONM的影响
Pub Date : 2025-12-18 DOI: 10.1016/j.neuri.2025.100253
Abdalla Nabil Elsharkawy , Nourhan Zayed
Intraoperative neuromonitoring (IONM) plays a critical role in preserving nerve function during high-risk surgeries through real-time monitoring of electromyographic (EMG) activity. Routine EMG analysis, in real-time, is complex and prone to variability. This work presents an end-to-end deep learning-based framework for accurate EMG signal classification of the nerve status using the discrete wavelet transform (DWT) mathematical technique. Four state-of-the-art deep learning architectures, including Convolutional Neural Networks (CNN), Long Short-Term Memory (LSTM), a CNN-LSTM ensemble, and a Transformer model, were tested with various Daubechies wavelet families (db1–db6) and window sizes (50–500 samples). The Transformer model performed superiorly in classification, achieving an outstanding accuracy of 98.13 %, an F1-score of 98.14 %, and a recall of 97.50 % using db1 and a 400-sample window. The results summed up that the use of wavelet-based time-frequency decomposition has a significant influence on enhancing classification performance, especially when utilized with deep learning models.
术中神经监测(IONM)通过实时监测肌电图(EMG)活动,在高危手术中起到保护神经功能的关键作用。常规的实时肌电图分析是复杂的,而且容易发生变化。这项工作提出了一个端到端的基于深度学习的框架,用于使用离散小波变换(DWT)数学技术对神经状态进行准确的肌电信号分类。四种最先进的深度学习架构,包括卷积神经网络(CNN)、长短期记忆(LSTM)、CNN-LSTM集成和Transformer模型,在不同的Daubechies小波家族(db1-db6)和窗口大小(50-500个样本)下进行了测试。Transformer模型在分类方面表现优异,使用db1和400个样本窗口时,准确率达到98.13%,f1得分为98.14%,召回率为97.50%。结果表明,使用基于小波的时频分解对提高分类性能有显著影响,特别是当与深度学习模型结合使用时。
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引用次数: 0
Evaluating the effect of point-sampling on univariate point and interval forecasting of cerebral physiologic signals using ARIMA modeling in acute traumatic neural injury 用ARIMA模型评价点采样对急性创伤性神经损伤脑生理信号单变量点区间预测的效果
Pub Date : 2025-12-17 DOI: 10.1016/j.neuri.2025.100248
Nuray Vakitbilir , Kevin Y. Stein , Tobias Bergmann , Noah Silvaggio , Amanjyot Singh Sainbhi , Abrar Islam , Logan Froese , Rakibul Hasan , Mansoor Hayat , Marcel Aries , Frederick A. Zeiler
High-resolution physiological signals, such as intracranial pressure (ICP) and regional cerebral oxygen saturation (rSO2), are critical for managing traumatic brain injury (TBI) by enabling continuous monitoring of cerebral autoregulation and vascular reactivity. These signals provide essential insights into brain perfusion dynamics, supporting timely clinical interventions. However, the high temporal resolution of these data introduces challenges in real-time use, integration into predictive models, and computational efficiency. Consequently, resolution reduction techniques are essential for simplifying the data while retaining critical features necessary for accurate prediction and modeling. Using the Multi-omic Analytics and Integrative Neuroinformatics in the HUman Brain (MAIN-HUB) Lab database, high-frequency cerebral physiologic dataset, we aimed to evaluate the effects of point-sampling resolution reduction on point and interval predictions using the autoregressive integrated moving average (ARIMA) model for both raw signals and derived indices. Temporal resolution was reduced by selecting the first value within non-overlapping intervals, ranging from 1-min (min) to 12-h windows. A total of 125 patient data was analyzed across various temporal resolutions. The results indicated that ARIMA models performed well at higher resolutions (e.g., 1-min), capturing short-term physiological dynamics with lower errors. However, as resolution decreased, errors and variability increased, particularly for signals like mean arterial pressure (MAP) and cerebral perfusion pressure (CPP), which exhibit rapid or complex physiological changes. The findings underscore the need to carefully balance temporal resolution, model performance, and computational efficiency, especially when dealing with high-frequency physiological data in clinical settings.
高分辨率的生理信号,如颅内压(ICP)和区域脑氧饱和度(rSO2),通过连续监测大脑自动调节和血管反应性,对治疗创伤性脑损伤(TBI)至关重要。这些信号提供了脑灌注动力学的基本见解,支持及时的临床干预。然而,这些数据的高时间分辨率在实时使用、集成到预测模型和计算效率方面带来了挑战。因此,分辨率降低技术对于简化数据,同时保留准确预测和建模所需的关键特征是必不可少的。利用人脑多组学分析和综合神经信息学(MAIN-HUB)实验室数据库、高频脑生理学数据集,我们旨在利用原始信号和衍生指数的自回归综合移动平均(ARIMA)模型,评估点采样分辨率降低对点和区间预测的影响。通过选择非重叠间隔内的第一个值来降低时间分辨率,范围从1分钟(min)到12小时窗口。在不同的时间分辨率下,共分析了125例患者的数据。结果表明,ARIMA模型在高分辨率(例如1分钟)下表现良好,以较低的误差捕获短期生理动力学。然而,随着分辨率的降低,误差和变异性增加,特别是对于平均动脉压(MAP)和脑灌注压(CPP)等信号,它们表现出快速或复杂的生理变化。研究结果强调了仔细平衡时间分辨率、模型性能和计算效率的必要性,特别是在临床环境中处理高频生理数据时。
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引用次数: 0
EEG-based classification in psychiatry using motif discovery 基于脑电图的精神病学基序发现分类
Pub Date : 2025-11-12 DOI: 10.1016/j.neuri.2025.100242
Melanija Kraljevska , Kateřina Hlaváčková-Schindler , Lukas Miklautz , Claudia Plant
In current medical practice, patients undergoing treatment for depression typically must wait four to six weeks before clinicians can assess their response to medication, due to the delayed onset of noticeable effects from antidepressants. Identifying treatment response at an earlier stage is of great importance, as it can reduce both the emotional and economic burden associated with prolonged treatment. We present a novel Motif Discovery Framework (MDF) that extracts dynamic features from EEG time series data to distinguish between treatment responders and non-responders in depression. Our findings show that MDF can predict treatment response with high precision as early as the 7th day of treatment, significantly reducing the waiting time for patients. Furthermore, we demonstrate that MDF generalizes well to classification tasks in other psychiatric conditions, including schizophrenia, Alzheimer’s disease, and dementia. Overall, our experiments show that MDF outperforms relevant benchmarks. The high precision of our classification framework underscores the potential of EEG dynamic properties-represented as motifs-to support clinical decision-making and ultimately enhance patient quality of life.
在目前的医疗实践中,由于抗抑郁药的明显效果延迟发作,接受抑郁症治疗的患者通常必须等待4到6周,临床医生才能评估他们对药物的反应。在早期阶段确定治疗反应是非常重要的,因为它可以减少与长期治疗相关的情绪和经济负担。我们提出了一种新的Motif发现框架(MDF),从脑电图时间序列数据中提取动态特征,以区分抑郁症治疗反应者和无反应者。我们的研究结果表明,MDF早在治疗第7天就可以高精度地预测治疗反应,显著减少患者的等待时间。此外,我们证明MDF可以很好地推广到其他精神疾病的分类任务,包括精神分裂症、阿尔茨海默病和痴呆症。总的来说,我们的实验表明MDF优于相关基准测试。我们的分类框架的高精度强调了EEG动态特性的潜力——以基序表示——以支持临床决策并最终提高患者的生活质量。
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引用次数: 0
Attention-Gated CNN and discrete wavelet transform based ensemble framework for brain hemorrhage classification 基于注意力门控CNN和离散小波变换的脑出血分类集成框架
Pub Date : 2025-11-12 DOI: 10.1016/j.neuri.2025.100243
Srutanik Bhaduri , Rasel Mondal , Prateek Sarangi , Vinod Kumar Kurmi , Swati Goyal , Lovely Kaushal , Mahek Sodani , Tanmay Basu
Brain hemorrhage, or Intracranial Hemorrhage (ICH), is a critical medical condition requiring rapid diagnosis. Existing Convolutional Neural Network (CNN) models often struggle to differentiate similar hemorrhage subtypes like Epidural (EDH) and Subdural (SDH) due to a lack of specific spatial feature identification. This study aims to develop a robust classification framework to address this challenge. We propose an ensemble framework combining two complementary models. The first is an attention-gated 2D CNN designed to highlight subtle hemorrhagic regions. The second is a multi-level Discrete Wavelet Transform (DWT) model that analyzes images in the frequency domain to capture deeper contextual and textural information from the 3D brain volume. The proposed ensemble model was evaluated on the RSNA, CQ500, and a new GMC clinical dataset. The empirical study demonstrates that our model consistently outperforms state-of-the-art methods across standard evaluation metrics, including accuracy, macro-averaged AUC-ROC, specificity, sensitivity, and F1-score. The novel ensembling of an attention-gated CNN and a DWT-based model provides a more comprehensive feature representation, leading to significantly improved accuracy and robustness in ICH classification, particularly in distinguishing challenging subtypes like EDH and SDH.
脑出血或颅内出血(ICH)是一种需要快速诊断的危重医学病症。由于缺乏特定的空间特征识别,现有的卷积神经网络(CNN)模型往往难以区分类似的出血亚型,如硬膜外(EDH)和硬膜下(SDH)。本研究旨在开发一个强大的分类框架来应对这一挑战。我们提出了一个结合两个互补模型的集成框架。第一个是注意门控的二维CNN,用来突出细微的出血区域。第二种是多层离散小波变换(DWT)模型,该模型在频域分析图像,从3D脑体积中捕获更深层次的上下文和纹理信息。在RSNA、CQ500和一个新的GMC临床数据集上对所提出的集成模型进行了评估。实证研究表明,我们的模型在标准评估指标上始终优于最先进的方法,包括准确性、宏观平均AUC-ROC、特异性、敏感性和f1评分。注意力门控CNN和基于dwt的模型的新颖组合提供了更全面的特征表示,从而显著提高了ICH分类的准确性和鲁棒性,特别是在区分EDH和SDH等具有挑战性的亚型方面。
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引用次数: 0
Deep learning for fetal brain imaging: A systematic review and framework towards privacy-preserving neurodevelopmental informatics 胎儿脑成像的深度学习:对隐私保护神经发育信息学的系统回顾和框架
Pub Date : 2025-10-28 DOI: 10.1016/j.neuri.2025.100241
Sayma Alam Suha, Rifat Shahriyar
Fetal neurodevelopment is a complex process of neural growth during pregnancy, where early detection of abnormalities is vital, and deep learning offers promising techniques for this purpose. The objective of this systematic review is to investigate deep learning applications in fetal neurodevelopment, aiming to synthesize cutting-edge research, examine methodologies, identify research gaps, and propose a federated learning framework. Following PRISMA 2020 guidelines, 55 peer-reviewed articles were selected from an initial 900 records across major databases and additional sources where each article was examined through six specific data extraction criteria. Peer-reviewed articles from 2005 to 2025, specifically those exploring automated deep learning for fetal neurodevelopment using clinical images were included, while non-deep learning analyses were excluded. Risk of bias was qualitatively assessed based on design, data diversity, validation, and reporting. Key scopes of the studies included brain segmentation and regionalization (50.91%), structural measurement (12.73%), image reconstruction, enhancement and synthesis (21.82%) and predictive modeling and clinical classification (14.55%) which also distinguishes between tasks involving pixel-level analysis and image-level predictions. The 55 included studies used diverse datasets (753 to 433,000 images) as well as synthetic image data in some recent works covering wide-ranging gestational ages, mainly using MRI and ultrasound images. The systematic analysis explicitly categorizes each study by task type, applied methodology (U-Net variants, transformer-based models, CNNs, implicit neural representations), and corresponding evaluation metrics—segmentation (DSC, IoU, HD95), classification (Accuracy, Precision, AUC), regression (MAE, RMSE, R2), and reconstruction (PSNR, SSIM), facilitating standardized performance comparisons and establishing clear benchmarks for future research in automated fetal brain imaging. Significant gaps that were identified include inadequate data diversity, privacy measures, limited clinical interpretability and validity of AI models, and insufficient integration of multimodal data. To address these challenges, a unified framework is proposed that integrates multimodal data fusion, explainable artificial intelligence (XAI) paradigms, and federated learning architectures complemented by synthetic data generation techniques to ensure robust privacy preservation in real-world application. This work was not specifically funded, and the review was not registered.
胎儿神经发育是怀孕期间神经生长的一个复杂过程,早期发现异常是至关重要的,深度学习为这一目的提供了有前途的技术。本系统综述的目的是研究深度学习在胎儿神经发育中的应用,旨在综合前沿研究,检查方法,确定研究空白,并提出一个联合学习框架。根据PRISMA 2020指南,从主要数据库和其他来源的初始900条记录中选择了55篇同行评议的文章,其中每篇文章都通过六个特定的数据提取标准进行了检查。2005年至2025年的同行评审文章,特别是那些利用临床图像探索胎儿神经发育自动化深度学习的文章被纳入其中,而非深度学习分析被排除。偏倚风险根据设计、数据多样性、验证和报告进行定性评估。主要研究范围包括脑分割和区域化(50.91%)、结构测量(12.73%)、图像重建、增强和合成(21.82%)以及预测建模和临床分类(14.55%),并区分涉及像素级分析和图像级预测的任务。这55项纳入的研究使用了不同的数据集(753至43.3万张图像),以及一些近期作品中的合成图像数据,涵盖了广泛的胎龄,主要使用MRI和超声图像。系统分析根据任务类型、应用方法(U-Net变量、基于变压器的模型、cnn、隐式神经表征)和相应的评估指标(分割(DSC、IoU、HD95)、分类(准确度、精度、AUC)、回归(MAE、RMSE、R2)和重建(PSNR、SSIM)对每项研究进行了明确的分类,促进了标准化的性能比较,并为未来的自动化胎儿脑成像研究建立了明确的基准。发现的重大差距包括数据多样性不足、隐私措施、人工智能模型的临床可解释性和有效性有限,以及多模式数据整合不足。为了应对这些挑战,提出了一个统一的框架,该框架集成了多模态数据融合、可解释的人工智能(XAI)范式和联合学习架构,辅以合成数据生成技术,以确保在实际应用中健壮的隐私保护。这项工作没有特别资助,评论也没有注册。
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引用次数: 0
Detecting the depth of sedation in the intensive care unit using a 2-channel electroencephalogram: An analysis with 2 machine learning models 使用双通道脑电图检测重症监护病房镇静深度:两种机器学习模型的分析
Pub Date : 2025-10-28 DOI: 10.1016/j.neuri.2025.100238
Esteban A. Alarcón-Braga , Samuel Gruffaz , Cécile Delagarde , Axel Roques , Jean-Clément Riff , Laurent Oudre , Clément Dubost
Existing methods to detect depth of sedation do not fully adjust to the characteristics of the ICU population. The aim of this study is to evaluate the performance of a two-channel EEG in predicting the depth of sedation in ICU patients. The electroencephalographic signal of 21 patients admitted to the ICU were analyzed, and EEG features were calculated. These served as inputs in 2 machine learning models: Random Forest Classifier (RFC) and Support Vector Machine (SVM). The depth of sedation was assessed using the Richmond Agitation-Sedation Scale (RASS). Patients with RASS scores of −4/−5 were classified as “Deeply Sedated”, otherwise they were classified as “Not Deeply Sedated”. In the general models, all EEG features were used, after which sequential feature selection was conducted to improve performance and reduce the number of variables (reduced models). The general models showed a moderate ability to discriminate between sedation categories (RFC: average F1-score=0.60, SVM: average F1-score=0.59). This ability was improved in the reduced models (RFC: average F1-score=0.65, SVM: average F1-score=0.72). It was observed that decreasing the number of features in the reduced SVM model from 6 to 3 features could achieve a similar performance while simplifying the model (SVM: average F1-score=0.72). An exploratory analysis showed that the individual feature with the best performance was Beta Power–EEG2. Overall, the 2-channel EEG has a moderate power to discriminate between different states of sedation and may not be useful in this purpose if used as a single predictor.
现有的检测镇静深度的方法不能完全适应ICU患者的特点。本研究的目的是评估双通道脑电图在预测ICU患者镇静深度方面的表现。分析21例ICU住院患者的脑电图信号,计算脑电图特征。这些作为两种机器学习模型的输入:随机森林分类器(RFC)和支持向量机(SVM)。采用Richmond激动-镇静量表(RASS)评估镇静深度。RASS评分为−4/−5的患者被归类为“深度镇静”,否则被归类为“非深度镇静”。在一般模型中,使用所有EEG特征,然后进行顺序特征选择以提高性能并减少变量数量(简化模型)。一般模型显示出适度的镇静类别区分能力(RFC:平均f1评分=0.60,SVM:平均f1评分=0.59)。这种能力在简化模型中得到了提高(RFC:平均F1-score=0.65, SVM:平均F1-score=0.72)。我们观察到,在简化模型的同时,将简化后的SVM模型中的特征数从6个减少到3个,可以达到相似的性能(SVM:平均F1-score=0.72)。探索性分析表明,性能最好的单个特征是Beta Power-EEG2。总的来说,双通道脑电图在区分不同的镇静状态方面具有中等的能力,如果用作单一的预测器,可能在此目的中不起作用。
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引用次数: 0
Power-to-power cross-frequency coupling as a novel approach for temporal lobe seizure detection and analysis 功率-功率交叉频率耦合作为一种新的颞叶癫痫检测和分析方法
Pub Date : 2025-10-28 DOI: 10.1016/j.neuri.2025.100240
Bar Lehmann, Andrei V. Medvedev

Objective

Power-to-power cross-frequency coupling (CFC) is a novel method to index the dynamic spatio-temporal interactions between brain rhythms, including high frequency oscillations (HFOs). This research evaluates this promising method's capacity for seizure detection with intracranial EEG. Seizures can be conceptualized as composites of different electrographic patterns including (1) spike, (2) ripple-on-spike, and (3) ripple-on-oscillation. This study also performs a basic CFC analysis of each of these components which has potential to further the understanding of epileptogenic processes.

Methods

In this study, deep learning networks including Stacked Sparse Autoencoder (SSAE) and Long Short Term Memory (LSTM) are trained to detect seizures and help characterize CFC patterns for these three common seizure components. The analysis uses intracranial EEG (iEEG) records from the ieeg.org (Mayo Clinic files) database. Temporal Lobe Epilepsy (TLE) seizures (n=120) from 26 patients were analyzed along with segments of background activity. Power-to-power coupling was calculated between all frequencies 1–250 Hz pairwise using the EEGLAB toolbox. CFC matrices of seizure and background activity were used as training or testing inputs to the autoencoder.

Results

The trained network was able to recognize background and seizure segments (not used in training) with a sensitivity of 90.2%, specificity of 96.8% and overall accuracy of 93.4%. The three seizure components (spike, ripple-on-spike, ripple-on-oscillation) were also observed to have unique CFC signatures.

Conclusions

The results provide evidence both for (1) the relevance of power-to-power coupling (PPC) for TLE seizure detection in iEEG, as well as (2) there existing unique PPC signatures of three common seizure components.
目的功率-功率交叉频率耦合(CFC)是一种用于表征脑节律(包括高频振荡)之间动态时空相互作用的新方法。本研究评估了该方法在颅内脑电图检测癫痫发作中的应用前景。癫痫发作可以被定义为不同电图模式的复合,包括(1)尖峰,(2)尖峰上的波纹,(3)振荡上的波纹。本研究还对这些成分进行了基本的氯氟化碳分析,这有可能进一步了解癫痫发生过程。方法在本研究中,深度学习网络包括堆叠稀疏自编码器(SSAE)和长短期记忆(LSTM)进行训练,以检测癫痫发作,并帮助表征这三种常见癫痫发作成分的CFC模式。分析使用来自ieeg.org(梅奥诊所档案)数据库的颅内脑电图(iEEG)记录。对26例颞叶癫痫(TLE)发作(n=120)及其背景活动片段进行分析。使用EEGLAB工具箱两两计算所有频率1-250 Hz之间的功率-功率耦合。癫痫发作和背景活动的CFC矩阵被用作自动编码器的训练或测试输入。结果训练后的神经网络能够识别背景和未用于训练的癫痫片段,灵敏度为90.2%,特异性为96.8%,总体准确率为93.4%。三种发作成分(尖峰,尖峰上的波纹,振荡上的波纹)也被观察到具有独特的CFC特征。结论电-电耦合(power-to-power coupling, PPC)与eeg中TLE发作检测的相关性,以及三种常见发作成分存在独特的PPC特征。
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Neuroscience informatics
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