Simultaneous EEG-fMRI is a powerful tool to study spontaneous and evoked brain activity because of the complementary advantages of the two techniques in terms of temporal and spatial resolution. In recent years, a significant number of scientific works have been published on this subject. However, many technical problems related to the intrinsic incompatibility of EEG and MRI methods are still not fully solved. Furthermore, simultaneous acquisition of EEG and event-related fMRI requires precise synchronization of all devices involved in the experimental setup. Thus, timing issue must be carefully considered in order to avoid significant methodological errors. The aim of the present work is to highlight and discuss some of technical and methodological open issues associated with the combined use of EEG and fMRI. These issues are presented in the context of preliminary data regarding simultaneous acquisition of event-related evoked potentials and BOLD images during a visual odd-ball paradigm.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.mri.2004.10.013 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Sleep entails significant changes in cerebral hemodynamics and metabolism. Yet, the way these processes evolve throughout wakefulness and sleep and their spatiotemporal dependence remain largely unknown. Here, by integrating a novel functional PET technique with simultaneous EEG-fMRI, we reveal a tightly coupled temporal progression of global hemodynamics and metabolism during the descent into NREM sleep, with large hemodynamic fluctuations emerging as global glucose metabolism declines, both of which track EEG arousal dynamics.
View Article and Find Full Text PDFEvaluation of Theta EEG Neurofeedback Procedure for Cognitive Training Using Simultaneous fMRI in Counterbalanced Active-Sham Study Design.
Hum Brain Mapp
January 2025
The Mind Research Network/Lovelace Biomedical Research Institute, Albuquerque, New Mexico, USA.
Evaluation of mechanisms of action of EEG neurofeedback (EEG-nf) using simultaneous fMRI is highly desirable to ensure its effective application for clinical rehabilitation and therapy. Counterbalancing training runs with active neurofeedback and sham (neuro)feedback for each participant is a promising approach to demonstrate specificity of training effects to the active neurofeedback. We report the first study in which EEG-nf procedure is both evaluated using simultaneous fMRI and controlled via the counterbalanced active-sham study design.
View Article and Find Full Text PDFApplication status and prospects of multimodal EEG-fMRI in HIV-associated neurocognitive disorders.
Front Neurol
December 2024
Department of Radiology, Beijing Youan Hospital, Capital Medical University, Beijing, China.
Article Synopsis
- HIV-associated neurocognitive disorders (HAND) affect cognitive functions like attention and memory in people with HIV, despite a decrease in incidence due to improved treatments.
- The diagnosis of HAND relies on neurocognitive tests, which can be subjective; therefore, there's a critical need for more accurate biomarkers.
- Advances in multimodal brain imaging, particularly the combination of EEG and fMRI, offer a promising approach to uncovering the mechanisms of HAND and may enable earlier diagnosis and better treatment options for affected patients.
Increased spindle-related brain activation in right middle temporal gyrus during N2 than N3 among healthy sleepers: Initial discovery and independent sample replication.
Neuroimage
January 2025
Peking University Sixth Hospital, Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Peking University, Beijing, PR China. Electronic address:
Article Synopsis
- The study investigates how spindle metrics relate to sleep architecture in N2 and N3 stages in healthy college students using EEG-fMRI.
- The results showed that blood-oxygen level-dependent signals in the right middle temporal gyrus were significantly higher in N2 sleep compared to N3, with this finding replicated in a separate group of normal adults.
- Additionally, a correlation analysis revealed that this activation in the right middle temporal gyrus was negatively associated with N2 sleep duration, suggesting its unique role in influencing the duration of N2 sleep.
Motor learning promotes regionally-specific spindle-slow wave coupled cerebral memory reactivation.
Commun Biol
November 2024
Sleep Unit, University of Ottawa Institute of Mental Health Research at The Royal, Ottawa, ON, Canada.
Sleep is essential for the optimal consolidation of newly acquired memories. This study examines the neurophysiological processes underlying memory consolidation during sleep, via reactivation. Here, we investigated the impact of slow wave - spindle (SW-SP) coupling on regionally-task-specific brain reactivations following motor sequence learning.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!