Browsing by Author "Caballero Gaudes, César"
Now showing items 1-20 of 23
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A deconvolution algorithm for multi-echo functional MRI: Multi-echo Sparse Paradigm Free Mapping
Caballero Gaudes, César; Moia, Stefano; Panwar, Puja; Bandettini, Peter A.; Gonzalez-Castillo, Javier (NeuroImage, 2019)This work introduces a novel algorithm for deconvolution of the BOLD signal in multi-echo fMRI data: Multi-echo Sparse Paradigm Free Mapping (ME-SPFM). Assuming a linear dependence of the BOLD percent signal change on the ... -
A probabilistic atlas of the human thalamic nuclei combining ex vivo MRI and histology
Iglesias, Juan Eugenio; Insausti, Ricardo; Lerma-Usabiaga, Garikoitz; Bocchetta, Martina; Van Leemput, Koen; Greve, Douglas N.; Van der Kouwe, Andre; the Alzheimer’s Disease Neuroimaging Initiative; Fischl, Bruce; Caballero Gaudes, César; Paz-Alonso, Pedro M. (NeuroImage, 2018)The human thalamus is a brain structure that comprises numerous, highly specific nuclei. Since these nuclei are known to have different functions and to be connected to different areas of the cerebral cortex, it is of great ... -
Agito ergo sum: Correlates of spatio-temporal motion characteristics during fMRI
Bolton, Thomas A.W.; Kebets, Valeria; Glerean, Enrico; Zöller, Daniela; Li, Jingwei; Yeo, B.T. Thomas; Caballero Gaudes, César; Van De Ville, Dimitri (NeuroImage, 2020)The impact of in-scanner motion on functional magnetic resonance imaging (fMRI) data has a notorious reputation in the neuroimaging community. State-of-the-art guidelines advise to scrub out excessively corrupted frames ... -
Cerebrovascular reactivity mapping and its impact on BOLD fMRI of task induced activity and rest.
Moia, Stefano (2021-12-02)... -
Closing eyes during auditory memory retrieval modulates alpha rhythm but does not alter tau rhythm
Bastarrika Iriarte, Ainhoa; Caballero Gaudes, César (NeuroImage, 2019)The alpha power increase that occurs when the eyes are closed is one of the most well-known effects in human electrophysiology. In particular, previous psychological studies have investigated whether eye closure can boost ... -
Decoding fMRI Events in Sensorimotor Motor Network Using Sparse Paradigm Free Mapping and Activation Likelihood Estimates
Tan, Francisca M.; Caballero Gaudes, César; Mullinger, Karen J.; Cho, Siu-Yeung; Zhang, Yaping; Dryden, Ian L.; Francis, Susan T.; Gowland, Penny A. (Human Brain Mapping, 2017)Most functional MRI (fMRI) studies map task-driven brain activity using a block or event-related paradigm. Sparse paradigm free mapping (SPFM) can detect the onset and spatial distribution of BOLD events in the brain without ... -
EEG and MEG evidence of a predominant number code in bilinguals and its significance for developmental dyscalculia
Martínez González, Alejandro (2017-07-11)When talking about bilinguals it is evident that they manage with two codes for the language. However, bilinguals also manage two codes for the representation of numerical facts and, even balanced bilinguals, have a ... -
Effect of prewhitening in resting-state functional near-infrared spectroscopy data
Blanco, Borja; Molnar, Monika; Caballero Gaudes, César (Neurophotonics, 2018)Near-infrared spectroscopy (NIRS) offers the potential to characterize resting-state functional connectivity (RSFC) in populations that are not easily assessed otherwise, such as young infants. In addition to the advantages ... -
Evaluation of multi-echo ICA denoising for task based fMRI studies: Block designs, rapid event-related designs, and cardiac-gated fMRI
Gonzalez-Castillo, Javier; Panwar, Puja; Buchanan, Laura C.; Caballero Gaudes, César; Handwerker, Daniel A.; Jangrawa, David C.; Zachariou, Valentinos; Inati, Souheil; Roopchansingh, Vinai (NeuroImage, 2016)Multi-echo fMRI, particularly the multi-echo independent component analysis (ME-ICA) algorithm, has previously proven useful for increasing the sensitivity and reducing false positives for functional MRI (fMRI) based resting ... -
ICA-based denoising strategies in breath-hold induced cerebrovascular reactivity mapping with multi echo BOLD fMRI
Moia, Stefano; Termenon, Maite; Uruñuela Tremiño, Eneko; Chen, Gang; Stickland, Rachael C.; Bright, Molly G.; Caballero Gaudes, César (NeuroImage, 2021)Performing a BOLD functional MRI (fMRI) acquisition during breath-hold (BH) tasks is a non-invasive, robust method to estimate cerebrovascular reactivity (CVR). However, movement and breathing-related artefacts caused by ... -
Imaging the spontaneous flow of thought: Distinct periods of cognition contribute to dynamic functional connectivity during rest
Gonzalez-Castillo, Javier; Caballero Gaudes, César; Topolski, Natasha; Handwerker, Daniel A.; Pereira, Francisco; Bandettini, Peter A. (NeuroImage, 2019)... -
Influence of Early Bilingual Exposure in the Developing Human Brain.
Blanco Maniega, Borja (2020-11-23)La adquisición del lenguaje es un proceso que ese encuentra determinado tanto por mecanismos de desarrollo cognitivo, como por la experiencia lingüística durante los primeros años de vida. Aunque se trata de un proceso ... -
Lag-Optimized Blood Oxygenation Level Dependent Cerebrovascular Reactivity Estimates Derived From Breathing Task Data Have a Stronger Relationship With Baseline Cerebral Blood Flow
Stickland, Rachael C.; Zvolanek, Kristina M.; Moia, Stefano; Caballero Gaudes, César; Bright, Molly G. (Frontiers Media, 2022-06)Cerebrovascular reactivity (CVR), an important indicator of cerebrovascular health, is commonly studied with the Blood Oxygenation Level Dependent functional MRI (BOLD-fMRI) response to a vasoactive stimulus. Theoretical ... -
Learning of goal-relevant and -irrelevant complex visual sequences in human V1
Rosenthal, Clive R.; Mallik, Indira; Caballero Gaudes, César; Sereno, Martin I.; Soto, David (NeuroImage, 2018)Learning and memory are supported by a network involving the medial temporal lobe and linked neocortical regions. Emerging evidence indicates that primary visual cortex (i.e., V1) may contribute to recognition memory, but ... -
Methods for cleaning the BOLD fMRI signal
Caballero Gaudes, César; Reynolds, Richard C. (NeuroImage, 2017)Blood oxygen-level-dependent functional magnetic resonance imaging (BOLD fMRI) has rapidly become a popular technique for the investigation of brain function in healthy individuals, patients as well as in animal studies. ... -
Neural correlates of phonological, orthographic and semantic reading processing in dyslexia
Paz-Alonso, P.M.; Oliver, M.; Lerma-Usabiaga, G.; Caballero Gaudes, César; Quiñones, I.; Suárez-Coalla, P.; Duñabeitia, J.A.; Cuetos, F.; Carreiras, Manuel (NeuroImage: Clinical, 2018)Developmental dyslexia is one of the most prevalent learning disabilities, thought to be associated with dysfunction in the neural systems underlying typical reading acquisition. Neuroimaging research has shown that readers ... -
Phonatory and articulatory representations of speech production in cortical and subcortical fMRI responses
Correia, João M.; Caballero Gaudes, César; Guediche, Sara; Carreiras, Manuel (Scientific Reports, 2020)Speaking involves coordination of multiple neuromotor systems, including respiration, phonation and articulation. Developing non-invasive imaging methods to study how the brain controls these systems is critical for ... -
Quality and denoising in real-time functional magnetic resonance imaging neurofeedback: A methods review
Heunis, Stephan; Lamerichs, Rolf; Zinger, Svitlana; Caballero Gaudes, César; Jansen, Jacobus F. A.; Aldenkamp, Bert; Breeuwer, Marcel (Human Brain Mapping, 2020)Neurofeedback training using real-time functional magnetic resonance imaging (rtfMRI-NF) allows subjects voluntary control of localised and distributed brain activity. It has sparked increased interest as a promising ... -
Simultaneous Bayesian correction of slab boundary artifacts and bias field for high resolution ex vivo MRI
Iglesias, J. Eugenio; Paz-Alonso, Pedro M.; Lerma-Usabiaga, Garikoitz; Insausti, Ricardo; Miller, K.; Caballero Gaudes, César (IEEE International Symposium on Biomedical Imaging (ISBI), 2016)Multi-slab MRI overcomes some of the hardware limitations of today's clinical scanners (e.g., memory size), enabling the acquisition of ultra-high resolution ex vivo MRI of the whole human brain with high SNR efficiency. ... -
Sleep State Modulates Resting-State Functional Connectivity in Neonates
Wai Lee, Chuen; Blanco, Borja; Dempsey, Laura; Chalia, Maria; Hebden, Jeremy C.; Caballero Gaudes, César; Austin, Topun; Cooper, Robert J. (Frontiers in Neuroscience, 2020)The spontaneous cerebral activity that gives rise to resting-state networks (RSNs) has been extensively studied in infants in recent years. However, the influence of sleep state on the presence of observable RSNs has yet ...