The most widely used EEG equipment for simultaneous EEG/BOLD fMRI acquisition consists of the BrainAmp MR plus, RecView and Analyzer 2. Thus, the Brain Products’ Technical Support team has great experience in helping our customers to solve technical problems concerning EEG/fMRI studies. In this article, we share our experience by presenting an overview of the most important set up steps for a successful EEG/fMRI experiment.
Motor imagery (MI) combined with neurofeedback has been suggested as a promising rehabilitation approach for paralyzed individuals. EEG based MI feedback is particularly promising for therapeutic applications. Yet whether EEG feedback indeed targets specific sensorimotor activation patterns cannot unambiguously inferred from EEG alone. This article demonstrates that online correction of gradient artifacts and ballistocardiogram artifacts enables reliable MI EEG feedback inside the MRI scanner.
Following the innovative projects funded by the Federal Ministry of Education and Research (BMBF) and the Federal Ministry for Economic Affairs and Energy (BMWi) in previous years. Brain Products was successful in gaining funding for three new projects related to Brain-Computer-Interfaces (BCI), Sleep and EEG-fMRI starting in 2015.
Brain Products is very happy to announce that we have established a co-operation framework with the Research Centre for Natural Sciences of the Hungarian Academy of Sciences. The co-operation framework is centered on multimodal imaging, in particular EEG & fMRI.
Simultaneous EEG-fMRI acquisitions can offer valuable insights for the non-invasive study of human brain function. Concurrently, the benefits offered by high-field imaging have attracted considerable interest towards simultaneous EEG-fMRI at higher field strengths. Unfortunately, simultaneous acquisitions are subject to problematic interactions that can compromise data quality and subject safety. Reducing noise during acquisition is crucial to improve EEG data quality, especially at higher fields. In this article, we assessed the importance of EEG cable length and geometry on noise sensitivity, at 7T, at the level of transmission between the cap and amplifiers.
Integration of concurrent real-time fMRI and EEG data: Self-regulation of human brain activity using simultaneous real-time fMRI and EEG neurofeedback
We integrated concurrent real-time fMRI (rtfMRI) and electroencephalography (EEG) data on commercial MRI and EEG equipment. We also report a proof-of-concept experiment using simultaneous multimodal rtfMRI and EEG neurofeedback (rtfMRI-EEG-nf). With this approach participants receive information about their electrophysiological (EEG) and hemodynamic (BOLD fMRI) activity in real-time, and volitionally regulate their own brain activity.
The Centre of Neurosciences of Cuba recently inaugurated its new facilities, being this the culmination of 45 years of research which led to the creation of CNEURO 25 years ago. One of the keynote lectures was given by Prof. Louis Lemieux (sponsored by Brain Products) on the role of EEG in fMRI studies.
Brain Products has been granted European patent for dry electrodes and Utility Model for fMRI compatible electrodes
As for the previously mentioned US patents, Brain Products is proud to have received the official confirmation for the European patent EP 2474263 B1 (dry electrode) as well as for the Utility Model 202011104334.0 (EEG electrode with an indicator to improve safety in EEG recordings).
The most prominent MR-related EEG artifacts are gradient artifacts and the ballistocardiogram. However, vibrations represent another problematic source of artifacts. Therefore, noise assessment and reduction is of special importance for EEG measurements within the MR scanner.
Recently, Brain Products has been granted several patents by the U.S. Patent and Trademark Office. These inventions demonstrate our continued motivation to design and develop innovative products.