Personne
João Pedro Forjaco Jorge
Cette personne n’est plus à l’EPFL
Publications associées (26)
Exploring the relative efficacy of motion artefact correction techniques for EEG data acquired during simultaneous fMRI
Simultaneous EEG-fMRI allows multiparametric characterisation of brain function, in principle enabling a more complete understanding of brain responses; unfortunately the hostile MRI environment severely reduces EEG data quality. Simply eliminating data se ...
2019Alpha/beta power decreases track the fidelity of stimulus-specific information
Massed synchronised neuronal firing is detrimental to information processing. When networks of task-irrelevant neurons fire in unison, they mask the signal generated by task-critical neurons. On a macroscopic level, such synchronisation can contribute to a ...
ELIFE SCIENCES PUBLICATIONS LTD2019MP2RAGE and Susceptibility-Weighted Imaging in Lesional Epilepsy at 7T
Lijing Xin, João Pedro Forjaco Jorge, Maxime Olivier Baud, François Lazeyras, Giannina Rita Iannotti
BACKGROUND AND PURPOSE: Surgery is the first choice therapeutic approach in case of drug-resistant epilepsy. Unfortunately, up to 43% of patients referred for presurgical assessment do not have a lesion detectable by routine 3T magnetic resonance imaging ( ...
2018Tracking discrete off-resonance markers with three spokes (trackDOTS) for compensation of head motion and B0 perturbations: Accuracy and performance in anatomical imaging
José Pedro Rebelo Ferreira Marques, Daniel Gallichan, João Pedro Forjaco Jorge, Frédéric Gretsch
PURPOSE: To develop a novel approach for head motion and B0 field monitoring based on tracking discrete off-resonance markers with three spokes (trackDOTS). METHODS: Small markers filled with acetic acid were built and attached to a head cap. Marker positi ...
Wiley-Blackwell2018Mapping and characterization of positive and negative BOLD responses to visual stimulation in multiple brain regions at 7T
Rolf Gruetter, Wietske Van der Zwaag, João Pedro Forjaco Jorge, Patricia Figueiredo
External stimuli and tasks often elicit negative BOLD responses in various brain regions, and growing experimental evidence supports that these phenomena are functionally meaningful. In this work, the high sensitivity available at 7T was explored to map an ...
2018Influence of physiological noise on accelerated 2D and 3D resting state functional MRI data at 7 T
Rolf Gruetter, Wietske Van der Zwaag, José Pedro Rebelo Ferreira Marques, João Pedro Forjaco Jorge, Olivier Benoit Thomas Reynaud
Physiological noise often dominates the blood-oxygen level-dependent (BOLD) signal fluctuations in high-field functional MRI (fMRI) data. Therefore, to optimize fMRI protocols, it becomes crucial to investigate how physiological signal fluctuations impact ...
Wiley-Blackwell2017Fourier modeling of the BOLD response to a breath-hold task: Optimization and reproducibility
João Pedro Forjaco Jorge, Patricia Figueiredo, Inês Nunes de Sousa
Cerebrovascular reactivity (CVR) reflects the capacity of blood vessels to adjust their caliber in order to maintain a steady supply of brain perfusion, and it may provide a sensitive disease biomarker. Measurement of the blood oxygen level dependent (BOLD ...
Elsevier2016Simultaneous EEG-fMRI at ultra-high field for the study of human brain function
Scalp electroencephalography (EEG) and functional magnetic resonance imaging (fMRI) have highly complementary domains, and their combination has been actively sought within neuroscience research. The important gains in fMRI sensitivity achieved with higher ...
EPFL2016Presurgical brain mapping in epilepsy using simultaneous EEG and functional MRI at ultra-high field: feasibility and first results
Wietske Van der Zwaag, João Pedro Forjaco Jorge, François Lazeyras, Giannina Rita Iannotti
OBJECTIVES: The aim of this study was to demonstrate that eloquent cortex and epileptic-related hemodynamic changes can be safely and reliably detected using simultaneous electroencephalography (EEG)-functional magnetic resonance imaging (fMRI) recordings ...
Springer Verlag2016Ballistocardiogram artifact correction taking into account physiological signal preservation in simultaneous EEG-fMRI
Wietske Van der Zwaag, João Pedro Forjaco Jorge, Patricia Figueiredo, Ana Francisca Leal Silva Soares
The ballistocardiogram (BCG) artifact is currently one of the most challenging in the EEG acquired concurrently with fMRI, with correction invariably yielding residual artifacts and/or deterioration of the physiological signals of interest. In this paper, ...
Elsevier2016