Elucidating hemodynamics and neuro-glio-vascular signaling using rodent fMRI DOI Creative Commons
Xiaoqing Zhou, Yuanyuan Jiang, L Gómez-Cid

et al.

Trends in Neurosciences, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Despite extensive functional mapping studies using rodent magnetic resonance imaging (fMRI), interpreting the fMRI signals in relation to their neuronal origins remains challenging due hemodynamic nature of response. Ultra high-resolution fMRI, beyond merely enhancing spatial specificity, has revealed vessel-specific responses, highlighting distinct contributions intracortical arterioles and venules signals. This 'single-vessel' approach shifts paradigm enabling its integration with other neuroimaging modalities investigate neuro-glio-vascular (NGV) signaling underlying a variety brain dynamics. Here, we review emerging trend combining multimodal opto/chemogenetic neuromodulation genetically encoded biosensors for cellular circuit-specific recording, offering unprecedented opportunities cross-scale dynamic models.

Language: Английский

In vivo direct imaging of neuronal activity at high temporospatial resolution DOI
Phan Tan Toi, Hyun Jae Jang, Kyeongseon Min

et al.

Science, Journal Year: 2022, Volume and Issue: 378(6616), P. 160 - 168

Published: Oct. 13, 2022

There has been a long-standing demand for noninvasive neuroimaging methods that can detect neuronal activity at both high temporal and spatial resolution. We present two-dimensional fast line-scan approach enables direct imaging of with millisecond precision while retaining the resolution magnetic resonance (MRI). This was demonstrated through in vivo mouse brain 9.4 tesla during electrical whisker-pad stimulation. In spike recording optogenetics confirmed correlation observed MRI signal neural activity. It also captured sequential laminar-specific propagation along thalamocortical pathway. high-resolution, will open up new avenues science by providing deeper understanding brain's functional organization, including temporospatial dynamics networks.

Language: Английский

Citations

83

Intrinsic macroscale oscillatory modes driving long range functional connectivity in female rat brains detected by ultrafast fMRI DOI Creative Commons
Joana Cabral, Francisca F. Fernandes, Noam Shemesh

et al.

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: Feb. 6, 2023

Abstract Spontaneous fluctuations in functional magnetic resonance imaging (fMRI) signals correlate across distant brain areas, shaping functionally relevant intrinsic networks. However, the generative mechanism of fMRI signal correlations, and particular link with locally-detected ultra-slow oscillations, are not fully understood. To investigate this link, we record ultrafast ultrahigh field (9.4 Tesla, temporal resolution = 38 milliseconds) from female rats three anesthesia conditions. Power at frequencies extending up to 0.3 Hz is detected consistently rat brains modulated by level. Principal component analysis reveals a repertoire modes, which transient oscillations organize fixed phase relationships distinct cortical subcortical structures. Oscillatory modes found vary between conditions, resonating faster under medetomidine sedation reducing both number, frequency, duration addition isoflurane. Peaking power within clear anatomical boundaries, these oscillatory point an emergent systemic property. This work provides additional insight into origin organizing principles underpinning spontaneous long-range connectivity.

Language: Английский

Citations

53

Advances in Neuroimaging and Deep Learning for Emotion Detection: A Systematic Review of Cognitive Neuroscience and Algorithmic Innovations DOI Creative Commons
Constantinos Halkiopoulos, Evgenia Gkintoni,

Anthimos Aroutzidis

et al.

Diagnostics, Journal Year: 2025, Volume and Issue: 15(4), P. 456 - 456

Published: Feb. 13, 2025

Background/Objectives: The following systematic review integrates neuroimaging techniques with deep learning approaches concerning emotion detection. It, therefore, aims to merge cognitive neuroscience insights advanced algorithmic methods in pursuit of an enhanced understanding and applications recognition. Methods: study was conducted PRISMA guidelines, involving a rigorous selection process that resulted the inclusion 64 empirical studies explore modalities such as fMRI, EEG, MEG, discussing their capabilities limitations It further evaluates architectures, including neural networks, CNNs, GANs, terms roles classifying emotions from various domains: human-computer interaction, mental health, marketing, more. Ethical practical challenges implementing these systems are also analyzed. Results: identifies fMRI powerful but resource-intensive modality, while EEG MEG more accessible high temporal resolution limited by spatial accuracy. Deep models, especially CNNs have performed well emotions, though they do not always require large diverse datasets. Combining data behavioral features improves classification performance. However, ethical challenges, privacy bias, remain significant concerns. Conclusions: has emphasized efficiencies detection, technical were highlighted. Future research should integrate advances, establish innovative enhance system reliability applicability.

Language: Английский

Citations

6

New imaging techniques and trends in radiology DOI Creative Commons
Mecit Kantarcı, Sonay Aydın, Hayri Oğul

et al.

Diagnostic and Interventional Radiology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 16, 2025

Radiography is a field of medicine inherently intertwined with technology.The dependency on technology very high for obtaining images in ultrasound (US), computed tomography (CT), and magnetic resonance imaging (MRI).Although the reduction radiation dose not applicable US MRI, advancements have made it possible CT, ongoing studies aimed at further optimization.The resolution diagnostic quality obtained through each modality are steadily improving.Additionally, technological progress has significantly shortened acquisition times CT MRI.The use artificial intelligence (AI), which becoming increasingly widespread worldwide, also been incorporated into radiography.This can produce more accurate reproducible results examinations.Machine learning offers great potential improving image quality, creating distinct useful images, even developing new modalities.Furthermore, AI technologies prevalent MRI evaluation, generation, enhanced quality.

Language: Английский

Citations

2

Interfacing with the Brain: How Nanotechnology Can Contribute DOI Creative Commons
Abdullah Ahmed Ali Ahmed, Núria Alegret, Bethany Almeida

et al.

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: March 10, 2025

Interfacing artificial devices with the human brain is central goal of neurotechnology. Yet, our imaginations are often limited by currently available paradigms and technologies. Suggestions for brain-machine interfaces have changed over time, along technology. Mechanical levers cable winches were used to move parts during mechanical age. Sophisticated electronic wiring remote control arisen age, ultimately leading plug-and-play computer interfaces. Nonetheless, brains so complex that these visions, until recently, largely remained unreachable dreams. The general problem, thus far, most technology mechanically and/or electrically engineered, whereas a living, dynamic entity. As result, worlds difficult interface one another. Nanotechnology, which encompasses engineered solid-state objects integrated circuits, excels at small length scales single few hundred nanometers and, thus, matches sizes biomolecules, biomolecular assemblies, cells. Consequently, we envision nanomaterials nanotools as opportunities in alternative ways. Here, review existing literature on use nanotechnology look forward discussing perspectives limitations based authors' expertise across range complementary disciplines─from neuroscience, engineering, physics, chemistry biology medicine, science mathematics, social jurisprudence. We focus but also include information from related fields when useful complementary.

Language: Английский

Citations

2

The coming decade of digital brain research: A vision for neuroscience at the intersection of technology and computing DOI Creative Commons
Katrin Amunts, Markus Axer, Swati Banerjee

et al.

Imaging Neuroscience, Journal Year: 2024, Volume and Issue: 2, P. 1 - 35

Published: April 1, 2024

Abstract In recent years, brain research has indisputably entered a new epoch, driven by substantial methodological advances and digitally enabled data integration modelling at multiple scales—from molecules to the whole brain. Major are emerging intersection of neuroscience with technology computing. This science combines high-quality research, across scales, culture multidisciplinary large-scale collaboration, translation into applications. As pioneered in Europe’s Human Brain Project (HBP), systematic approach will be essential for meeting coming decade’s pressing medical technological challenges. The aims this paper to: develop concept decade digital discuss community large, identify points convergence, derive therefrom scientific common goals; provide framework current future development EBRAINS, infrastructure resulting from HBP’s work; inform engage stakeholders, funding organisations institutions regarding research; address transformational potential comprehensive models artificial intelligence, including machine learning deep learning; outline collaborative that integrates reflection, dialogues, societal engagement on ethical opportunities challenges as part research.

Language: Английский

Citations

16

No replication of direct neuronal activity–related (DIANA) fMRI in anesthetized mice DOI Creative Commons
Sang‐Han Choi, Geun Ho Im, Sangcheon Choi

et al.

Science Advances, Journal Year: 2024, Volume and Issue: 10(13)

Published: March 27, 2024

Direct imaging of neuronal activity (DIANA) by functional magnetic resonance (fMRI) could be a revolutionary approach for advancing systems neuroscience research. To independently replicate this observation, we performed fMRI experiments in anesthetized mice. The blood oxygenation level–dependent (BOLD) response to whisker stimulation was reliably detected the primary barrel cortex before and after DIANA experiments; however, no DIANA–like peak observed individual animals’ data with 50 300 trials. Extensively averaged involving 1050 trials six mice showed flat baseline detectable activity–like peak. However, spurious, nonreplicable peaks were found when using small number trials, artifactual some outlier-like excluded. Further, BOLD-responding thalamus from selected reference function cortex. Thus, unable previously reported results without preselection.

Language: Английский

Citations

9

Dark Brain Energy: Toward an Integrative Model of Spontaneous Slow Oscillations DOI
Zhu-Qing Gong,

Xi-Nian Zuo

Physics of Life Reviews, Journal Year: 2025, Volume and Issue: 52, P. 278 - 297

Published: Feb. 7, 2025

Language: Английский

Citations

1

The Role of Neuroinflammation and Network Anomalies in Drug-Resistant Epilepsy DOI Creative Commons
Jianwei Shi, Jing Xie, Z G Li

et al.

Neuroscience Bulletin, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 24, 2025

Epilepsy affects over 50 million people worldwide. Drug-resistant epilepsy (DRE) accounts for up to a third of these cases, and neuro-inflammation is thought play role in such cases. Despite being long-debated issue the field DRE, mechanisms underlying neuroinflammation have yet be fully elucidated. The pro-inflammatory microenvironment within brain tissue with DRE has been probed using single-cell multimodal transcriptomics. Evidence suggests that inflammatory cells cytokines nervous system can lead extensive biochemical changes, as connexin hemichannel excitability disruption neurotransmitter homeostasis. presence inflammation may give rise neuronal network abnormalities suppress endogenous antiepileptic systems. We focus on anomalies from multiple perspectives identify critical points clinical application. hope provide an insightful overview advance quest better treatments.

Language: Английский

Citations

1

Sleep fMRI with simultaneous electrophysiology at 9.4 T in male mice DOI Creative Commons

Yalin Yu,

Yue Qiu, Gen Li

et al.

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: March 24, 2023

Abstract Sleep is ubiquitous and essential, but its mechanisms remain unclear. Studies in animals humans have provided insights of sleep at vastly different spatiotemporal scales. However, challenges to integrate local global information sleep. Therefore, we developed fMRI based on simultaneous electrophysiology 9.4 T male mice. Optimized un-anesthetized mouse setup allowed manifestation NREM REM sleep, a large dataset was collected openly accessible. State dependent patterns were revealed, state transitions found be global, asymmetrical sequential, which can predicted up 17.8 s using LSTM models. Importantly, with hippocampal recording revealed potentiated sharp-wave ripple triggered during than awake state, potentially attributable co-occurrence spindle events. To conclude, established electrophysiology, demonstrated capability by revealing dynamics neural

Language: Английский

Citations

21