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Decision-making power enhances investors' neural processing of persuasive message in partnership investment. 在合伙投资中,决策力会增强投资者对说服信息的神经处理能力。
IF 4.7 2区 医学 Q1 NEUROIMAGING Pub Date : 2024-11-16 DOI: 10.1016/j.neuroimage.2024.120938
Jianbiao Li, Peikun Chen, Jingjing Pan, Chengkang Zhu

Partnership investment is a common form of business where investors have different levels of power and need to persuade each other to reach a consensus. This study investigated the neural mechanisms underlying the impact of decision-making power on persuasive communication in partnership investment, aiming to provide neural evidence to test two competing hypotheses: the power-responsibility hypothesis and the power-overconfidence hypothesis. Using functional near-infrared spectroscopy (fNIRS), we recorded brain activity from persuader-receiver dyads as they engaged in a partnership investment task. Behavioral results showed that receivers' decisions were more affected by persuaders' persuasive messages when receivers had dominant decision-making power. Neurally, the functional connectivity (FC) between the left and right temporo-parietal junctions (lTPJ and rTPJ) of the receiver was significantly increased by their decision-making power. Additionally, we identified four pairs of interpersonal neural synchronization (INS) that exhibited significant enhancement when persuaders used numeric persuasion rather than non-numeric persuasion: lTPJ-rTPJ, left superior temporal gyrus (lSTG)-rTPJ, left middle temporal gyrus (lMTG)-rTPJ, and medial prefrontal cortex (mPFC)-lTPJ. The decision-making power amplified the INS difference in the last three pairs. Furthermore, using a support vector machine (SVM) algorithm, the INS could accurately predict receivers' adoption of persuasive messages when they held dominant decision-making power. Finally, we found that FC at lTPJ-rTPJ and INS at lSTG-rTPJ were positively associated with receivers' adoption of persuasive messages as well. Our study clarifies how decision-making power alters the way individuals process persuasive messages in partnership investment, providing insights into the neural basis of persuasion in group decision-making contexts and supporting the power-responsibility hypothesis.

合伙投资是一种常见的商业形式,投资者拥有不同程度的权力,需要相互说服以达成共识。本研究调查了合伙投资中决策权对说服沟通影响的神经机制,旨在提供神经证据来验证两个相互竞争的假说:权力-责任假说和权力-过度自信假说。利用功能性近红外光谱(fNIRS),我们记录了劝说者和接受者在参与合伙投资任务时的大脑活动。行为结果表明,当接收者拥有主导决策权时,接收者的决策受劝说者的劝说信息影响更大。从神经学角度看,接受者左右颞顶叶交界处(lTPJ 和 rTPJ)之间的功能连接(FC)因其决策权而显著增加。此外,我们还发现当劝说者使用数字劝说而非非数字劝说时,有四对人际神经同步(INS)表现出明显的增强:lTPJ-rTPJ、左颞上回(lSTG)-rTPJ、左颞中回(lMTG)-rTPJ和内侧前额叶皮层(mPFC)-lTPJ。决策力放大了后三对的 INS 差异。此外,利用支持向量机(SVM)算法,当接收者拥有主导决策权时,INS 可以准确预测接收者对说服信息的接受程度。最后,我们发现lTPJ-rTPJ的FC和lSTG-rTPJ的INS与接受者对说服信息的采纳也呈正相关。我们的研究阐明了决策权是如何改变个体在合伙投资中处理说服信息的方式的,为研究群体决策情境中说服的神经基础提供了见解,并支持了权力-责任假说。
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引用次数: 0
Direction and velocity kinematic features of point-light displays grasping actions are differentially coded within the action observation network. 点光显示抓取动作的方向和速度运动特征在动作观察网络中进行了不同的编码。
IF 4.7 2区 医学 Q1 NEUROIMAGING Pub Date : 2024-11-16 DOI: 10.1016/j.neuroimage.2024.120939
Settimio Ziccarelli, Antonino Errante, Leonardo Fogassi

The processing of kinematic information embedded in observed actions is an essential ability for understanding others' behavior. Previous research showed that the action observation network (AON) may encode some action kinematic features. However, our understanding of how direction and velocity are encoded within the AON is still limited. In this study, we employed event-related fMRI to investigate the neural substrates specifically activated during observation of hand grasping actions presented as point-light displays, performed with different directions (right, left) and velocities (fast, slow). Twenty-three healthy adult participants took part in the study. To identify brain regions differentially recruited by grasping direction and velocity, univariate and multivariate pattern analysis (MVPA) were performed. The results of univariate analysis demonstrate that direction is encoded in occipito-temporal and posterior visual areas, while velocity recruits lateral occipito-temporal, superior parietal and intraparietal areas. Results of MVPA further show: a) a significant decoding accuracy of both velocity and direction at the network level; b) the possibility to decode within lateral occipito-temporal and parietal areas both direction and velocity; c) a contribution of bilateral premotor areas to velocity decoding models. These results indicate that posterior parietal nodes of the AON are mainly involved in coding grasping direction and that premotor regions are crucial for coding grasping velocity, while lateral occipito-temporal cortices play a key role in encoding both parameters. The current findings could have implications for observational-based rehabilitation treatments of patients with motor disorders and artificial intelligence-based hand action recognition models.

处理观察到的动作中所包含的运动学信息是理解他人行为的一项基本能力。以往的研究表明,动作观察网络(AON)可以编码一些动作的运动学特征。然而,我们对 AON 如何编码方向和速度的理解仍然有限。在这项研究中,我们采用了事件相关的 fMRI 技术,研究了在观察以点光源显示方式呈现的手部抓握动作时,不同方向(右、左)和速度(快、慢)的神经基质的特异性激活情况。23 名健康的成年参与者参加了研究。为了确定抓取方向和速度对大脑区域的不同招募作用,研究人员进行了单变量和多变量模式分析(MVPA)。单变量分析结果表明,方向在枕颞区和后部视觉区编码,而速度则征集外侧枕颞区、顶叶上部和顶叶内区。MVPA 的结果进一步表明:a) 在网络水平上,速度和方向的解码准确性都很高;b) 在侧枕颞区和顶叶区对方向和速度进行解码的可能性;c) 双侧运动前区对速度解码模型的贡献。这些结果表明,AON的后顶叶节点主要参与对抓取方向的编码,而运动前区对抓取速度的编码至关重要,而外侧枕颞皮层在对这两个参数的编码中起着关键作用。目前的研究结果可能会对运动障碍患者基于观察的康复治疗和基于人工智能的手部动作识别模型产生影响。
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引用次数: 0
Validation of SynthSeg segmentation performance on CT using paired MRI from radiotherapy patients. 使用放疗患者的配对核磁共振成像验证 SynthSeg 在 CT 上的分割性能。
IF 4.7 2区 医学 Q1 NEUROIMAGING Pub Date : 2024-11-16 DOI: 10.1016/j.neuroimage.2024.120922
Selena Huisman, Matteo Maspero, Marielle Philippens, Joost Verhoeff, Szabolcs David

Introduction: Manual segmentation of medical images is labor intensive and especially challenging for images with poor contrast or resolution. The presence of disease exacerbates this further, increasing the need for an automated solution. To this extent, SynthSeg is a robust deep learning model designed for automatic brain segmentation across various contrasts and resolutions. This study validates the SynthSeg robust brain segmentation model on computed tomography (CT), using a multi-center dataset.

Methods: An open access dataset of 260 paired CT and magnetic resonance imaging (MRI) from radiotherapy patients treated in 5 centers was collected. Brain segmentations from CT and MRI were obtained with SynthSeg model, a component of the Freesurfer imaging suite. These segmentations were compared and evaluated using Dice scores and Hausdorff 95 distance (HD95), treating MRI-based segmentations as the ground truth. Brain regions that failed to meet performance criteria were excluded based on automated quality control (QC) scores.

Results: Dice scores indicate a median overlap of 0.76 (IQR: 0.65-0.83). The mean volume difference is 7.79% (CI: 6.41%-9.18%), with CT segmentations typically smaller than MRI-based. The median HD95 is 2.95 mm (IQR: 1.73-5.39). QC score based thresholding improves median dice by 0.1 and median HD95 by 0.05 mm. Morphological differences related to sex and age, as detected by MRI, were also replicated with CT, with an approximate 17% difference between the CT and MRI results for sex and 10% difference between the results for age.

Conclusion: SynthSeg can be utilized for CT-based automatic brain segmentation, but only in applications where precision is not essential. CT performance is lower than MRI based on the integrated QC scores, but low-quality segmentations can be excluded with QC-based thresholding. Additionally, performing CT-based neuroanatomical studies is encouraged, as the results show correlations in sex- and age-based analyses similar to those found with MRI.

简介医学影像的手动分割需要大量人力,对于对比度或分辨率较低的图像尤其具有挑战性。疾病的存在进一步加剧了这一问题,从而增加了对自动解决方案的需求。为此,SynthSeg 是一个强大的深度学习模型,专为各种对比度和分辨率的大脑自动分割而设计。本研究利用多中心数据集在计算机断层扫描(CT)上验证了 SynthSeg 稳健的大脑分割模型:方法:收集了来自 5 个中心的放疗患者的 260 个成对 CT 和磁共振成像(MRI)的开放数据集。使用 Freesurfer 成像套件中的 SynthSeg 模型对 CT 和 MRI 进行大脑分割。使用 Dice 分数和 Hausdorff 95 距离 (HD95) 对这些分割结果进行了比较和评估,并将基于 MRI 的分割结果视为基本真相。根据自动质量控制(QC)评分,未达到性能标准的脑区被排除在外:Dice 评分显示重叠中位数为 0.76(IQR:0.65-0.83)。平均体积差异为 7.79% (CI:6.41%-9.18%),CT 分段通常小于 MRI 分段。HD95 的中位数为 2.95 毫米(IQR:1.73-5.39)。基于 QC 分数的阈值可将中位骰子提高 0.1 毫米,将中位 HD95 提高 0.05 毫米。核磁共振成像检测到的与性别和年龄有关的形态学差异在 CT 上也得到了证实,CT 和核磁共振成像在性别方面的结果相差约 17%,在年龄方面的结果相差 10%:结论:SynthSeg 可用于基于 CT 的自动脑部分割,但仅限于精度要求不高的应用。根据综合 QC 分数,CT 的性能比 MRI 低,但可以通过基于 QC 的阈值排除低质量的分割。此外,基于 CT 的神经解剖学研究也值得鼓励,因为研究结果显示,基于性别和年龄的相关性分析与核磁共振成像类似。
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引用次数: 0
Heschl's gyrus and the temporal pole: The cortical lateralization of language. 赫氏回和颞极:语言的皮层侧化
IF 4.7 2区 医学 Q1 NEUROIMAGING Pub Date : 2024-11-15 DOI: 10.1016/j.neuroimage.2024.120930
Mikael Roll

The left lateralization of language has been attributed to hemispheric specialization for processing rapidly changing information. While interhemispheric differences in auditory cortex organization support this view, the macrostructure of the entire cerebral cortex has not been thoroughly examined from this perspective. This study investigated hemispheric asymmetries in cortical surface area and thickness and their relationship to pronunciation scores from oral reading using the Human Connectome Project Young Adult dataset (N=1113). Heschl's gyrus had the most left-lateralized surface area, while the temporal pole showed the strongest right-lateralization in thickness. These areas correspond to the core components of speech: sound and meaning. Notably, their structural features were the only ones also yielding a significant correlation with pronunciation scores. Additionally, Broca's area's posterior region (pars opercularis), involved in articulatory phonological processing, showed leftward lateralization, contrasting with the right-lateralized anterior portions. Left-hemisphere language areas were largely thinner and more extended than their right-sided homologs with a larger white-to-gray matter ratio. Cortical thickness was inversely related to surface area. The lateralization of auditory-related language areas and their structure's correlation with pronunciation in oral reading supports a genetically based auditory foundation for language. A thinner, more efficient cortex with larger surface areas and increased myelination likely underlies the left-hemispheric dominance of language. Thinner, more extended brain areas have been linked to more myelination and wider cortical columns and intercolumnar space. This provides the potential for a fast network of interconnected, discrete information units able to support language's demands of rapid categorical processing.

语言的左侧化被认为是由于大脑半球专门处理快速变化的信息。虽然听觉皮层组织的半球间差异支持这一观点,但整个大脑皮层的宏观结构尚未从这一角度进行深入研究。本研究利用人类连接组计划青年成人数据集(N=1113)研究了大脑皮层表面积和厚度的半球不对称性及其与口语阅读发音分数的关系。Heschl回的表面积最左侧化,而颞极的厚度最右侧化。这些区域对应于语音的核心成分:声音和意义。值得注意的是,它们的结构特征是唯一与发音得分有显著相关性的特征。此外,参与发音处理的布洛卡区后部(厣旁)呈现左侧化,与右侧化的前部形成鲜明对比。与右侧同源区相比,左半球语言区在很大程度上更薄、更扩展,白质与灰质的比例更大。皮质厚度与表面积成反比。听觉相关语言区域的侧向性及其结构与口语阅读中发音的相关性支持了语言的听觉基因基础。更薄、更有效的大脑皮层具有更大的表面积和更多的髓鞘,这可能是语言左半球优势的基础。更薄、更广的大脑区域与更多的髓鞘化、更宽的皮质柱和柱间空间有关。这就有可能形成一个由相互连接的离散信息单元组成的快速网络,以支持语言对快速分类处理的要求。
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引用次数: 0
Using High-Pass Filter to Enhance Scan Specific Learning for MRI Reconstruction without Any Extra Training Data. 利用高通滤波器加强磁共振成像重建的扫描特定学习,无需额外的训练数据。
IF 4.7 2区 医学 Q1 NEUROIMAGING Pub Date : 2024-11-14 DOI: 10.1016/j.neuroimage.2024.120926
Zhaoyang Jin, Jiuwen Cao, Mei Zhang, Qing-San Xiang

In accelerated MRI, the robust artificial-neural-network for k-space interpolation (RAKI) method is an attractive learning-based reconstruction that does not require additional training data. This study was focused on obtaining high quality MR images from regular under-sampled multi-coil k-space data using a high-pass filtered RAKI (HP-RAKI) reconstruction without any extra training data. MRI scan from human subjects was under-sampled with a regular pattern using skipped phase encoding and a fully sampled k-space center. A high-pass (HP) filter was applied in k-space to reduce image support to facilitate linear prediction. The HP filtered k-space center was used to train the RAKI network without any extra training data. The unacquired k-space data can be predicted from a trained RAKI network with optimized parameters. Final reconstruction was obtained after performing an inverse HP filtering for the predicted k-space data. This HP-RAKI method can be extended to corresponding residual structure (HP-rRAKI). HP-RAKI was compared with GRAPPA, HP-GRAPPA, RAKI and MW-RAKI algorithms, and HP-rRAKI was compared with corresponding residual extensions, including rRAKI and MW-rRAKI, all qualitatively and quantitatively using visual inspection and such metrics as SSIM and PSNR. HP-RAKI and HP-rRAKI were found to be effective in reconstructing MR images even at high acceleration factors. HP-RAKI and HP-rRAKI compared favorably with other algorithms. Using high-pass filtered central k-space data for training, HP-RAKI offers higher reconstruction quality for regularly under-sampled multi-coil k-space data without any extra training data. It has shown promising capabilities for fast MRI applications, especially those lacking fully sampled training data.

在加速磁共振成像中,用于 k 空间插值的鲁棒人工神经网络(RAKI)方法是一种基于学习的重建方法,无需额外的训练数据。本研究的重点是利用高通滤波 RAKI(HP-RAKI)重建方法,在不需要任何额外训练数据的情况下,从常规欠采样多线圈 k 空间数据中获取高质量的 MR 图像。利用跳过相位编码和全采样 k 空间中心,以规则模式对人体磁共振成像扫描进行欠采样。在 k 空间中应用高通(HP)滤波器来减少图像支持,以促进线性预测。经 HP 滤波的 k 空间中心用于训练 RAKI 网络,无需任何额外的训练数据。未获取的 k 空间数据可以通过经过优化参数训练的 RAKI 网络进行预测。在对预测的 k 空间数据进行反 HP 滤波后,即可获得最终重建结果。这种 HP-RAKI 方法可以扩展到相应的残差结构(HP-RRAKI)。HP-RAKI 与 GRAPPA、HP-GRAPPA、RAKI 和 MW-RAKI 算法进行了比较,HP-rRAKI 与相应的残差扩展(包括 rRAKI 和 MW-rRAKI)进行了比较,所有这些都采用目视检查和 SSIM、PSNR 等指标进行定性和定量比较。结果发现,HP-RAKI 和 HP-rRAKI 即使在高加速因子下也能有效地重建 MR 图像。与其他算法相比,HP-RAKI 和 HP-rRAKI 更胜一筹。HP-RAKI 使用高通滤波中心 k 空间数据进行训练,无需额外的训练数据,就能为有规律的低采样多线圈 k 空间数据提供更高的重建质量。它在快速磁共振成像应用中,尤其是那些缺乏全采样训练数据的应用中,表现出了良好的性能。
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引用次数: 0
Intermodulation Frequency Components in Steady-State Visual Evoked Potentials: Generation, Characteristics and Applications. 稳态视觉诱发电位中的互调频率成分:产生、特征和应用。
IF 4.7 2区 医学 Q1 NEUROIMAGING Pub Date : 2024-11-14 DOI: 10.1016/j.neuroimage.2024.120937
Yuzhen Chen, Jiawen Bai, Nanlin Shi, Yunpeng Jiang, Xiaogang Chen, Yixuan Ku, Xiaorong Gao

The steady-state visual evoked potentials (SSVEPs), evoked by dual-frequency or multi-frequency stimulation, likely contains intermodulation frequency components (IMs). Visual IMs are products of nonlinear integration of neural signals and can be evoked by various paradigms that induce neural interaction. IMs have demonstrated many interesting and important characteristics in cognitive psychology, clinical neuroscience, brain-computer interface and other fields, and possess substantial research potential. In this paper, we first review the definition of IMs and summarize the stimulation paradigms capable of inducing them, along with the possible neural origins of IMs. Subsequently, we describe the characteristics and derived applications of IMs in previous studies, and then introduced three signal processing methods favored by researchers to enhance the signal-to-noise ratio of IMs. Finally, we summarize the characteristics of IMs, and propose several potential future research directions related to IMs.

双频或多频刺激诱发的稳态视觉诱发电位(SSVEPs)可能包含互调频率成分(IMs)。视觉 IMs 是神经信号非线性整合的产物,可由各种诱导神经交互的范式诱发。IMs 在认知心理学、临床神经科学、脑机接口等领域表现出许多有趣而重要的特性,具有巨大的研究潜力。在本文中,我们首先回顾了 IM 的定义,总结了能够诱导 IM 的刺激范式,以及 IM 可能的神经起源。随后,我们介绍了以往研究中 IMs 的特点和衍生应用,并介绍了三种研究人员青睐的信号处理方法,以提高 IMs 的信噪比。最后,我们总结了 IMs 的特点,并提出了与 IMs 相关的几个潜在的未来研究方向。
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引用次数: 0
Role of dietary patterns in older adults with cognitive disorders: An umbrella review utilizing neuroimaging biomarkers 膳食模式在患有认知障碍的老年人中的作用:利用神经影像生物标志物的综合评述》。
IF 4.7 2区 医学 Q1 NEUROIMAGING Pub Date : 2024-11-14 DOI: 10.1016/j.neuroimage.2024.120935
Sara Khoshdooz , Ali Bonyad , Reihaneh Bonyad , Parisa Khoshdooz , Ali Jafari , Sama Rahnemayan , Hamid Abbasi
Various dietary patterns (DPs) may benefit or harm cognitive status through their components. Publications assessing the impact of DPs on cognitive scores using neuropsychological tests have often led to less promising results. Recently, numerous meta-analyses and systematic reviews have utilized neuroimaging to identify more subtle brain-associated alterations related to cognition. Combining neuroimaging methods with neuropsychological assessments could clarify these findings. This umbrella review was conducted to systematically explore evidence on the impact of DPs on neuroimaging biomarkers in older adults with cognitive disorders. Scientific databases, including Scopus, PubMed, and Web of Science, were comprehensively searched from the earliest available data until May 11, 2024. Out of 89 papers, 15 meta-analyses and systematic reviews were included in our umbrella review. These selected papers addressed 27 DPs and their impact on neuroimaging biomarkers. Most selected papers were of moderate quality. Studies revealed that greater adherence to the Mediterranean diet (MedDiet) correlated with increased cortical thickness, improved glucose metabolism in the brain, and reduced amyloid-beta and tau deposition, as evidenced by magnetic resonance imaging and other neuroimaging techniques. Higher adherence to healthy DPs, such as the MedDiet, reduced the risk of Alzheimer's disease and mild cognitive impairment. In contrast, Western and high glycemic diets were associated with increased cognitive decline.
各种膳食模式(DPs)可能会通过其成分对认知状况有益或有害。通过神经心理学测试评估膳食模式对认知能力评分影响的出版物,结果往往不太乐观。最近,许多荟萃分析和系统综述利用神经影像学来确定与认知有关的更微妙的大脑相关改变。将神经影像学方法与神经心理学评估相结合可以澄清这些发现。本综述旨在系统性地探讨 DPs 对患有认知障碍的老年人神经影像生物标志物的影响。研究人员对 Scopus、PubMed 和 Web of Science 等科学数据库进行了全面检索,检索时间从最早的可用数据开始,直至 2024 年 5 月 11 日。在 89 篇论文中,有 15 篇荟萃分析和系统综述被纳入我们的总综述。这些入选论文涉及 27 种 DPs 及其对神经影像生物标记物的影响。大多数入选论文质量中等。研究表明,更多坚持地中海饮食(MedDiet)与大脑皮层厚度增加、大脑葡萄糖代谢改善、淀粉样蛋白-β和tau沉积减少相关,这在磁共振成像和其他神经成像技术中得到了证明。更多地坚持健康饮食(如 "健康饮食")可降低阿尔茨海默病和轻度认知障碍的风险。相比之下,西式饮食和高血糖饮食与认知能力下降的增加有关。
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引用次数: 0
Dysregulated neurofluid coupling as a new noninvasive biomarker for primary progressive aphasia. 神经流体耦合失调是原发性进行性失语症的一种新的无创生物标记物
IF 4.7 2区 医学 Q1 NEUROIMAGING Pub Date : 2024-11-14 DOI: 10.1016/j.neuroimage.2024.120924
Xinglin Zeng, Lin Hua, Guolin Ma, Zhiying Zhao, Zhen Yuan

Accumulation of pathological tau is one of the primary causes of Primary Progressive Aphasia (PPA). The glymphatic system is crucial for removing metabolite waste from the brain whereas impairments in glymphatic clearance in PPA are poorly understood. Thus, this study aims to investigate the role of dysregulated macroscopic cerebrospinal fluid (CSF) movement in PPA. Fifty-six PPA individuals and ninety-four healthy controls were included in our analysis after excluding those with excessive head motions during the scan. The coupling strength between blood-oxygen-level-dependent (BOLD) signals in the gray matter and CSF flow was calculated using Pearson correlation and compared between the groups. Its associations with clinical characteristics including scores from Clinical Dementia Rating (CDR), Mini-Mental State Exam, Geriatric Depression Scale and with morphological measures in the hippocampus and entorhinal cortex were examined. PPA subjects exhibited weaker global BOLD-CSF coupling compared to HCs, indicating impairments in glymphatic function in the patients (p = 0.01). In the PPA but not HC group, global BOLD-CSF coupling correlated with the CDR scores (p = 0.04) and hippocampal volume (p = 0.009). The observed decoupling between global brain activity and CSF flow and its association with symptomatology and brain structural changes in PPA converges with previous reports on the same measure in other neurodegenerative diseases. These findings support the potential role of global BOLD-CSF coupling as a noninvasive marker for glymphatic dysregulation in PPA.

病理性 tau 的积累是原发性进行性失语症(PPA)的主要病因之一。脑 glymphatic 系统对清除大脑中的代谢废物至关重要,但人们对 PPA 中的脑 glymphatic 清除障碍还知之甚少。因此,本研究旨在探讨宏观脑脊液(CSF)运动失调在 PPA 中的作用。在排除了扫描过程中头部过度运动的患者后,我们对 56 名 PPA 患者和 94 名健康对照者进行了分析。我们使用皮尔逊相关法计算了灰质中血氧浓度依赖性(BOLD)信号与脑脊液流动之间的耦合强度,并对各组之间的耦合强度进行了比较。研究还考察了BOLD信号与临床特征(包括临床痴呆评分(CDR)、迷你精神状态检查、老年抑郁量表)的关系,以及与海马和内侧皮层形态学测量的关系。与 HC 相比,PPA 受试者表现出更弱的全局 BOLD-CSF 耦合,这表明患者的脑功能受损(p = 0.01)。在 PPA 组而非 HC 组,全局 BOLD-CSF 耦合与 CDR 评分(p = 0.04)和海马体积(p = 0.009)相关。在 PPA 中观察到的全局脑活动与 CSF 流量之间的脱钩及其与症状和脑结构变化之间的关联,与之前有关其他神经退行性疾病中相同测量指标的报道一致。这些发现支持了全局 BOLD-CSF 耦合作为 PPA 中脑浆失调的非侵入性标记的潜在作用。
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引用次数: 0
The impact of EEG electrode density on the mapping of cortical activity networks in infants. 脑电图电极密度对绘制婴儿皮层活动网络图的影响。
IF 4.7 2区 医学 Q1 NEUROIMAGING Pub Date : 2024-11-13 DOI: 10.1016/j.neuroimage.2024.120932
Amirreza Asayesh, Sampsa Vanhatalo, Anton Tokariev

Objective: Electroencephalography (EEG) is widely used for assessing infant's brain activity, and multi-channel recordings support studies on functional cortical networks. Here, we aimed to assess how the number of recording electrodes affects the quality and level of details accessible in studying infant's cortical networks.

Methods: Dense array EEG recordings with 124 channels from N=20 infants were used as the reference, and lower electrode numbers were subsampled to simulate recording setups with 63, 31, and 19 electrodes, respectively. Cortical activity networks were computed for each recording setup and different frequencies using amplitude and phase correlation measures. The effects of the recording setup were systematically assessed on global, nodal, and edge levels.

Results: Compared to the reference 124-channel recording setup, lowering electrode density affected network measures in a modality- and frequency-specific manner. The global network features were essentially comparable with 63 or 31 channels. However, the analytic reliability of the local network measures, both at nodal and edge levels, was proportional to the electrode density. The low-frequency amplitude correlations were most robust to the number of recording electrodes, whereas higher frequency phase correlation networks were most sensitive to the density of recording electrodes.

Conclusions: Our findings suggest strong and predictable effects of recording setup on the network analyses. Higher electrode number supports studies on networks with phase correlations, higher frequency, and finer spatial details.

Significance: The relationship between the recording setup and reliability of network analyses is essential for the prospective design of research data collection, as well as for guiding analytic strategies when using already collected EEG data from infants.

目的:脑电图(EEG)被广泛用于评估婴儿的大脑活动,多通道记录有助于研究大脑皮层活动网络。在此,我们旨在评估记录电极的数量如何影响研究婴儿大脑皮层网络的质量和细节水平:方法:以 N=20 名婴儿的 124 个通道的密集阵列脑电图记录为参考,对较低的电极数进行子采样,分别模拟 63、31 和 19 个电极的记录设置。针对每种记录设置计算皮层活动网络,并使用振幅和相位相关测量法计算不同频率的皮层活动网络。系统评估了记录设置对节点和边缘水平的全局网络特征的影响:结果:与参考的 124 通道记录设置相比,降低电极密度会以特定模式和频率的方式影响网络测量。全局网络特征与 63 或 31 个通道基本相当。然而,网络测量的分析可靠性,无论是节点还是边缘水平,都与电极密度成正比。低频振幅相关性对记录电极的数量最为稳健,而高频相位相关性网络对记录电极的密度最为敏感:我们的研究结果表明,记录设置对网络分析有强烈的、可预测的影响。结论:我们的研究结果表明,记录设置对网络分析有强烈且可预测的影响。电极数量越多,对相位相关、高频率和高空间细节的网络研究越有帮助:意义:记录设置与网络分析可靠性之间的关系对于研究数据收集的前瞻性设计以及在使用已收集的婴儿脑电图数据时指导分析策略至关重要。
{"title":"The impact of EEG electrode density on the mapping of cortical activity networks in infants.","authors":"Amirreza Asayesh, Sampsa Vanhatalo, Anton Tokariev","doi":"10.1016/j.neuroimage.2024.120932","DOIUrl":"10.1016/j.neuroimage.2024.120932","url":null,"abstract":"<p><strong>Objective: </strong>Electroencephalography (EEG) is widely used for assessing infant's brain activity, and multi-channel recordings support studies on functional cortical networks. Here, we aimed to assess how the number of recording electrodes affects the quality and level of details accessible in studying infant's cortical networks.</p><p><strong>Methods: </strong>Dense array EEG recordings with 124 channels from N=20 infants were used as the reference, and lower electrode numbers were subsampled to simulate recording setups with 63, 31, and 19 electrodes, respectively. Cortical activity networks were computed for each recording setup and different frequencies using amplitude and phase correlation measures. The effects of the recording setup were systematically assessed on global, nodal, and edge levels.</p><p><strong>Results: </strong>Compared to the reference 124-channel recording setup, lowering electrode density affected network measures in a modality- and frequency-specific manner. The global network features were essentially comparable with 63 or 31 channels. However, the analytic reliability of the local network measures, both at nodal and edge levels, was proportional to the electrode density. The low-frequency amplitude correlations were most robust to the number of recording electrodes, whereas higher frequency phase correlation networks were most sensitive to the density of recording electrodes.</p><p><strong>Conclusions: </strong>Our findings suggest strong and predictable effects of recording setup on the network analyses. Higher electrode number supports studies on networks with phase correlations, higher frequency, and finer spatial details.</p><p><strong>Significance: </strong>The relationship between the recording setup and reliability of network analyses is essential for the prospective design of research data collection, as well as for guiding analytic strategies when using already collected EEG data from infants.</p>","PeriodicalId":19299,"journal":{"name":"NeuroImage","volume":" ","pages":"120932"},"PeriodicalIF":4.7,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142639326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electrophysiological indexes of the cognitive-motor trade-off associated with motor response complexity in a cognitive task 认知任务中与运动反应复杂性相关的认知-运动权衡的电生理指标。
IF 4.7 2区 医学 Q1 NEUROIMAGING Pub Date : 2024-11-13 DOI: 10.1016/j.neuroimage.2024.120931
Bianca Maria di Bello , Andrea Casella , Merve Aydin , Stefania Lucia , Francesco Di Russo , Sabrina Pitzalis
Complex actions require more cognitive and motor control than simple ones. Literature shows that to face complexity, the brain must make a compromise between available resources usually giving priority to motor control. However, literature has minimally explored the effect of the motor response complexity on brain processing associated with cognitive tasks. Consequently, it is unknown whether carrying out a cognitive task requiring motor responses of increasing complexity could reduce cognitive processing keeping stable motor control. Therefore, this study aims to investigate possible modulations exerted by increasing motor response complexity in a cognitive task on brain processing. To this aim, we analyzed the event-related potentials and behavioral responses during a cognitive task with increasing complexity of the required motor response (keypress, reaching and stepping). Results showed the increasing motor complexity enhances early visual and attentional processing (P1 and N1 components) but reduces the late post-perceptual cognitive control (P3 component). Additionally, we found a component following the P3 which was specific for stimuli requiring a response. This component, labeled N750, increased amplitude along with the response motor complexity. Behaviorally, response accuracy was not affected by complexity. Results indicated that in cognitive tasks stimulus processing is affected by the complexity of the motor response. Complex responses require a greater investment of early perceptual and attentional resources, but at late phases of processing, cognitive resources are less available in favor of motor resources. This confirms the idea of the motor-priority cognitive-motor trade-off of the brain.
与简单动作相比,复杂动作需要更多的认知和运动控制。文献表明,面对复杂性,大脑必须在可用资源之间做出妥协,通常优先考虑运动控制。然而,文献很少探讨运动反应的复杂性对与认知任务相关的大脑处理过程的影响。因此,人们还不知道,执行一项需要运动反应复杂度不断增加的认知任务,是否会在保持稳定运动控制的情况下减少认知处理。因此,本研究旨在探讨在认知任务中增加运动反应复杂性对大脑处理过程可能产生的影响。为此,我们分析了在认知任务中,随着所需运动反应(按键、伸手和迈步)复杂程度的增加,事件相关电位和行为反应的变化情况。结果表明,运动复杂度的增加会增强早期视觉和注意力处理(P1 和 N1 分量),但会降低后期感知后认知控制(P3 分量)。此外,我们还发现了 P3 之后的一个分量,它专门针对需要做出反应的刺激。该成分被标记为 N750,其振幅随着反应运动复杂性的增加而增加。在行为上,反应的准确性不受复杂性的影响。结果表明,在认知任务中,刺激处理会受到运动反应复杂性的影响。复杂的反应需要投入更多的早期知觉和注意资源,但在处理的后期阶段,认知资源的可用性降低,而运动资源的可用性提高。这印证了大脑运动优先认知运动权衡的观点。
{"title":"Electrophysiological indexes of the cognitive-motor trade-off associated with motor response complexity in a cognitive task","authors":"Bianca Maria di Bello ,&nbsp;Andrea Casella ,&nbsp;Merve Aydin ,&nbsp;Stefania Lucia ,&nbsp;Francesco Di Russo ,&nbsp;Sabrina Pitzalis","doi":"10.1016/j.neuroimage.2024.120931","DOIUrl":"10.1016/j.neuroimage.2024.120931","url":null,"abstract":"<div><div>Complex actions require more cognitive and motor control than simple ones. Literature shows that to face complexity, the brain must make a compromise between available resources usually giving priority to motor control. However, literature has minimally explored the effect of the motor response complexity on brain processing associated with cognitive tasks. Consequently, it is unknown whether carrying out a cognitive task requiring motor responses of increasing complexity could reduce cognitive processing keeping stable motor control. Therefore, this study aims to investigate possible modulations exerted by increasing motor response complexity in a cognitive task on brain processing. To this aim, we analyzed the event-related potentials and behavioral responses during a cognitive task with increasing complexity of the required motor response (keypress, reaching and stepping). Results showed the increasing motor complexity enhances early visual and attentional processing (P1 and N1 components) but reduces the late post-perceptual cognitive control (P3 component). Additionally, we found a component following the P3 which was specific for stimuli requiring a response. This component, labeled N750, increased amplitude along with the response motor complexity. Behaviorally, response accuracy was not affected by complexity. Results indicated that in cognitive tasks stimulus processing is affected by the complexity of the motor response. Complex responses require a greater investment of early perceptual and attentional resources, but at late phases of processing, cognitive resources are less available in favor of motor resources. This confirms the idea of the motor-priority cognitive-motor trade-off of the brain.</div></div>","PeriodicalId":19299,"journal":{"name":"NeuroImage","volume":"303 ","pages":"Article 120931"},"PeriodicalIF":4.7,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142624662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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NeuroImage
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