Brain-stomach interactions revealed via simultaneous Electrogastrography (EGG) and fMRI

By combining electrogastrography, resting state fMRI, and phase synchronization methods, we developed a novel framework to examine brain-stomach interactions. We found that during rest, the stomach is coupled to a wide-spread cortical and subcortical network, with large effect sizes in sensory-motor regions.

  • Translating visual perception from the lab to the real world using mobile EEG and mixed reality displays

Translating visual perception from the lab to the real world using mobile EEG and mixed reality displays

This research combines mobile EEG and augmented reality (AR) to study cognition. Participants completed three face inversion tasks: (1) computer-based, (2) mobile EEG with photographs, (3) mobile EEG with AR. We find face inversion effects in all tasks, concluding that mobile EEG and AR is a promising approach for research.

Investigating mental workload-induced changes in cortical oxygenation and frontal theta activity during simulated flights: an interview with author, Anneke Hamann

In a recent publication, Anneke Hamann and Nils Carstengerde (German Aerospace Center, Institute of Flight Guidance) investigated pilots’ cognitive states using EEG & fNIRS and analyzed the effects of stepwise increased mental workload while controlling for fatigue. Here is an interview with the authors about their paper and their fascinating research.

  • Safety and data quality of EEG recorded simultaneously with multi-band fMRI

Safety and data quality of EEG recorded simultaneously with multi-band fMRI

Until recently, there has been little information about EEG data quality and safety when used with newer multi-band (MB) fMRI sequences. Here, we measure the relative heating of a MB protocol compared with a standard single-band (SB) protocol considered to be safe. We also evaluated EEG quality recorded concurrently with the MB protocol on humans.

  • Transcranial Evoked Potentials can be reliably recorded with active electrodes (Fig. 1)

Transcranial Evoked Potentials can be reliably recorded with active electrodes

In this article, based on our current work, we compared transcranial evoked potentials recorded with active and passive electrodes. Signals obtained with the two methods did not statistically differ in amplitude and topography, and showed a high degree of similarity across the scalp. We conclude that active electrodes are a viable solution for studies combining transcranial magnetic stimulation and electroencephalography.

  • The sound of silence: an EEG hyperscanning study

The sound of silence: an EEG study of how musicians time pauses in individual and joint music performance

We recently investigated how musical partners resolve unmeasured expressive silences in musical interaction. Partners resolved shorter silences more synchronously than longer silences; partners also displayed enhanced neural markers of motor preparation for shorter relative to longer silences. Thus, shorter silences in interaction may facilitate interpersonal coordination.

  • Carbon Wire Loops (CWLs) in EEG-fMRI studies of interictal epileptic activity

Carbon Wire Loops in EEG-fMRI studies of interictal epileptic activity

At the Montreal Neurological Institute and Hospital, we work with combined EEG and fMRI acquisition to study epileptic patients to determine the brain region responsible for the generation of seizures that characterize this condition. We use Carbon Wire Loops to help recover a clean signal from the EEG recorded in the MR environment.

2022-03-14T15:59:20+01:00December 4th, 2020|Categories: 2020, Issue 3/2020, User Research|Tags: , , , , , |
  • First Steps to Using Carbon Wire Loops (CWLs) to Correct for Artifacts in simultaneous EEG-fMRI

First Steps to Using Carbon Wire Loops to Correct for Artifacts in simultaneous EEG-fMRI

EEG signals acquired in parallel to fMRI data require the handling of artifacts in the EEG dataset due to electrode motion, for example, by blood pulsation. Using carbon wire loops placed on EEG caps allows you to directly measure these artifacts and subsequently correct for them efficiently using a regression-based approach.

  • Methodology for characterizing network activations with neuro-navigated TMS and EEG

Methodology for characterizing network activations with neuro-navigated TMS and EEG

This aEEG-TMSrticle walks you through the collection of neuro-navigated simultaneously obtained Transcranial Magnetic Stimulation (TMS) evoked EEG (TMS-EEG) data to investigate network-specific TMS-induced EEG activations, as in Ozdemir et al, 2020 (PNAS), focusing specifically on the methods of TMS-EEG data collection and analysis.

2023-03-31T15:16:48+02:00December 4th, 2020|Categories: 2020, Issue 3/2020, Support & Tips, User Research|Tags: , , , , , |
  • From Movement to Action: An EEG Study into the Emerging Sense of Agency in Early Infancy

From Movement to Action: An EEG Study into the Emerging Sense of Agency in Early Infancy

This study investigates whether 4-month-old infants build causal action-effect models, a prerequisite for a sense of agency. Using behavioral and neural measures of violation of expectation, we found evidence for causal models only in a subset of infants. Thus, the sense of agency is beginning to emerge at this age.

Go to Top