Investigation of the neurovascular coupling in positive and negative BOLD responses in human brain at 7 T.

abstract：:Common fMRI data processing techniques usually minimize a temporal cost function or fit a temporal model to extract an activity map. Here, we focus on extracting a highly, spatially reproducible statistical parametric map (SPM) from fMRI data using a cost function that does not depend on a model of the subjects' tempo...

journal_title：NeuroImage

authors： Afshin-Pour B,Hossein-Zadeh GA,Strother SC,Soltanian-Zadeh H

更新日期：2012-05-01 00:00:00

abstract：:We describe a mathematical model linking changes in cerebral blood flow, blood volume and the blood oxygenation state in response to stimulation. The model has three compartments to take into account the fact that the cerebral blood flow and volume as measured concurrently using laser Doppler flowmetry and optical ima...

journal_title：NeuroImage

authors： Zheng Y,Johnston D,Berwick J,Chen D,Billings S,Mayhew J

更新日期：2005-12-01 00:00:00

abstract：:To exploit the high (millisecond) temporal resolution of magnetoencephalography (MEG) and electroencephalography (EEG) for measuring neuronal dynamics within well-defined brain regions, it is important to quantitatively assess their localizing ability. Previous modeling studies and empirical data suggest that a combin...

journal_title：NeuroImage

authors： Sharon D,Hämäläinen MS,Tootell RB,Halgren E,Belliveau JW

更新日期：2007-07-15 00:00:00

abstract：:Brain imaging studies in TEP, functional magnetic resonance imaging (fMRI) and electroencephalography (EEG) have shown that visuospatial short-term memory tasks depend on dorsal parietofrontal networks. Knowing the spatiotemporal dynamics of this network would provide further understanding of the neural bases of the e...

journal_title：NeuroImage

authors： Croizé AC,Ragot R,Garnero L,Ducorps A,Pélégrini-Issac M,Dauchot K,Benali H,Burnod Y

更新日期：2004-11-01 00:00:00

abstract：:The first minutes following awakening from sleep are typically marked by reduced vigilance, increased sleepiness and impaired performance, a state referred to as sleep inertia. Although the behavioral aspects of sleep inertia are well documented, its cerebral correlates remain poorly understood. The present study aime...

journal_title：NeuroImage

authors： Vallat R,Meunier D,Nicolas A,Ruby P

更新日期：2019-01-01 00:00:00

abstract：:Numerous factors have been reported to underlie the representation of complex images in high-level human visual cortex, including categories (e.g. faces, objects, scenes), animacy, and real-world size, but the extent to which this organization reflects behavioral judgments of real-world stimuli is unclear. Here, we co...

journal_title：NeuroImage

authors： King ML,Groen IIA,Steel A,Kravitz DJ,Baker CI

更新日期：2019-08-15 00:00:00

abstract：:Developmental differences in brain activation of 9- to 15-year-old children were examined during an auditory rhyme decision task to spoken words using functional magnetic resonance imaging (fMRI). As a group, children showed activation in the left superior/middle temporal gyri (BA 22, 21), right middle temporal gyrus ...

journal_title：NeuroImage

authors： Cone NE,Burman DD,Bitan T,Bolger DJ,Booth JR

更新日期：2008-06-01 00:00:00

abstract：:The temporal monocular crescent (TMC) is the most peripheral portion of the visual field whose perception relies solely on input from the ipsilateral eye. According to a handful of post-mortem histological studies in humans and non-human primates, the TMC is represented visuotopically within the most anterior portion ...

journal_title：NeuroImage

authors： Nasr S,LaPierre C,Vaughn CE,Witzel T,Stockmann JP,Polimeni JR

更新日期：2020-04-01 00:00:00

abstract：:Spatiotemporal filtering and amplification of sensory information at multiple levels during the generation of perceptual representations is a fundamental processing principle of the nervous system. While for the visual and auditory system temporal filtering of sensory signals has been noticed for a long time, respecti...

journal_title：NeuroImage

authors： Sprenger C,Stenmans P,Tinnermann A,Büchel C

更新日期：2018-12-01 00:00:00

abstract：:Previous studies demonstrated that brain signals encode information about specific features of simple auditory stimuli or of general aspects of natural auditory stimuli. How brain signals represent the time course of specific features in natural auditory stimuli is not well understood. In this study, we show in eight ...

journal_title：NeuroImage

authors： Potes C,Gunduz A,Brunner P,Schalk G

更新日期：2012-07-16 00:00:00

abstract：:Discovering functional connectivity between and within brain regions is a key concern in neuroscience. Due to the noise inherent in fMRI data, it is challenging to characterize the properties of individual voxels, and current methods are unable to flexibly analyze voxel-level connectivity differences. We propose a new...

journal_title：NeuroImage

authors： Baldassano C,Iordan MC,Beck DM,Fei-Fei L

更新日期：2012-11-15 00:00:00

abstract：:Motor performance recovery after a demanding finger motor task does not follow the excitability dynamics of primary motor cortex (M1), which remains depressed also when performance is restored. Thus, other neural circuits are supposed to cope with central fatigue, re-establishing adequate motor performance levels. A h...

journal_title：NeuroImage

authors： Bonzano L,Tacchino A,Saitta L,Roccatagliata L,Avanzino L,Mancardi GL,Bove M

更新日期：2013-01-15 00:00:00

abstract：:Emotional experience in healthy men has been shown to rely on a brain network including subcortical as well as cortical areas in a complex interaction, which may be substantially influenced by many internal personal and external factors such as individuality, gender, stimulus material and task instructions. The diverg...

journal_title：NeuroImage

authors： Habel U,Klein M,Kellermann T,Shah NJ,Schneider F

更新日期：2005-05-15 00:00:00

abstract：:To image cerebral neural activity in ischemic areas, we proposed a novel technique to analyze spontaneous neuromagnetic fields based on standardized low-resolution brain electromagnetic tomography modified for a quantifiable method (sLORETA-qm). Using a 160-channel whole-head-type magnetoencephalographic system, cereb...

journal_title：NeuroImage

authors： Sakamoto S,Tanaka H,Tsuyuguchi N,Terakawa Y,Ohata K,Inoue Y,Miki Y,Hara M,Takahashi Y,Nitta K,Sawa H,Satone A,Ide W,Hashimoto I,Kamada H

更新日期：2010-01-01 00:00:00

abstract：:Musical notes played at octave intervals (i.e., having the same pitch chroma) are perceived as similar. This well-known perceptual phenomenon lays at the foundation of melody recognition and music perception, yet its neural underpinnings remain largely unknown to date. Using fMRI with high sensitivity and spatial reso...

journal_title：NeuroImage

authors： Moerel M,De Martino F,Santoro R,Yacoub E,Formisano E

更新日期：2015-02-01 00:00:00

abstract：:We evaluated the cholinergic mechanism underlying focal cortical vascular response to neuronal activation, using positron emission tomography for use on animals to measure cerebral blood flow and glucose metabolism activation upon vibrotactile stimulation in cats. Bromopyruvate, which blocks acetylcholine synthesis th...

journal_title：NeuroImage

authors： Fukuyama H,Ouchi Y,Matsuzaki S,Ogawa M,Yamauchi H,Nagahama Y,Kimura J,Yonekura Y,Shibasaki H,Tsukada H

更新日期：1996-06-01 00:00:00

abstract：:Nuclear magnetic resonance (NMR) relaxation in the rotating frame is sensitive to molecular dynamics on the time scale of water molecules interacting with macromolecules or supramolecular complexes, such as proteins, myelin and cell membranes. Hence, longitudinal (T1ρ) and transverse (T2ρ) relaxation in the rotating f...

journal_title：NeuroImage

authors： Andronesi OC,Bhat H,Reuter M,Mukherjee S,Caravan P,Rosen BR

更新日期：2014-04-01 00:00:00

abstract：:Recent studies have illustrated that motion-related artifacts remain in resting-state fMRI (rs-fMRI) data even after common corrective processing procedures have been applied, but the extent to which head motion distorts the data may be modulated by the corrective approach taken. We compare two different methods for e...

journal_title：NeuroImage

authors： Muschelli J,Nebel MB,Caffo BS,Barber AD,Pekar JJ,Mostofsky SH

更新日期：2014-08-01 00:00:00

abstract：:As the EEG inverse problem does not have a unique solution, the sources reconstructed from EEG and their connectivity properties depend on forward and inverse modeling parameters such as the choice of an anatomical template and electrical model, prior assumptions on the sources, and further implementational details. I...

journal_title：NeuroImage

authors： Mahjoory K,Nikulin VV,Botrel L,Linkenkaer-Hansen K,Fato MM,Haufe S

更新日期：2017-05-15 00:00:00

abstract：:Neural encoding of value-based stimuli is suggested to involve representations of summary statistics, including risk and expected value (EV). A more complex, but ecologically more common, context is when multiple risky options are evaluated together. However, it is unknown whether encoding related to option evaluation...

journal_title：NeuroImage

authors： Wright ND,Symmonds M,Dolan RJ

更新日期：2013-11-01 00:00:00

abstract：:Surface-based cortical registration methods that are driven by geometrical features, such as folding, provide sub-optimal alignment of many functional areas due to variable correlation between cortical folding patterns and function. This has led to the proposal of new registration methods using features derived from f...

journal_title：NeuroImage

authors： Robinson EC,Jbabdi S,Glasser MF,Andersson J,Burgess GC,Harms MP,Smith SM,Van Essen DC,Jenkinson M

更新日期：2014-10-15 00:00:00

abstract：:Axon diameter mapping using high-gradient diffusion MRI has generated great interest as a noninvasive tool for studying trends in axonal size in the human brain. One of the main barriers to mapping axon diameter across the whole brain is accounting for complex white matter fiber configurations (e.g., crossings and fan...

journal_title：NeuroImage

authors： Fan Q,Nummenmaa A,Witzel T,Ohringer N,Tian Q,Setsompop K,Klawiter EC,Rosen BR,Wald LL,Huang SY

更新日期：2020-11-15 00:00:00

abstract：:Neocortical cholinergic afferents are proposed to influence both selective attention and emotional processing. In a study of healthy adults we used event-related fMRI while orthogonally manipulating attention and emotionality to examine regions showing effects of cholinergic modulation by the anticholinesterase physos...

journal_title：NeuroImage

authors： Bentley P,Vuilleumier P,Thiel CM,Driver J,Dolan RJ

更新日期：2003-09-01 00:00:00

abstract：:We present a new framework for prior-constrained sparse decomposition of matrices derived from the neuroimaging data and apply this method to functional network analysis of a clinically relevant population. Matrix decomposition methods are powerful dimensionality reduction tools that have found widespread use in neuro...

journal_title：NeuroImage

authors： Dhillon PS,Wolk DA,Das SR,Ungar LH,Gee JC,Avants BB

更新日期：2014-10-01 00:00:00

abstract：:Preterm birth is a major public health concern, with the severity and occurrence of adverse outcome increasing with earlier delivery. Being born preterm disrupts a time of rapid brain development: in addition to volumetric growth, the cortex folds, myelination is occurring and there are changes on the cellular level. ...

journal_title：NeuroImage

authors： Eaton-Rosen Z,Melbourne A,Orasanu E,Cardoso MJ,Modat M,Bainbridge A,Kendall GS,Robertson NJ,Marlow N,Ourselin S

更新日期：2015-05-01 00:00:00

abstract：:It is crucial to understand what brain signals can be decoded from single trials with different recording techniques for the development of Brain-Machine Interfaces. A specific challenge for non-invasive recording methods are activations confined to small spatial areas on the cortex such as the finger representation o...

journal_title：NeuroImage

authors： Quandt F,Reichert C,Hinrichs H,Heinze HJ,Knight RT,Rieger JW

更新日期：2012-02-15 00:00:00

abstract：:Results of this PET-O15 water activation study confirm the implication of supplementary motor areas during time estimation tasks. They also show that the cortical-subcortical network associated with temporal processing is impaired in schizophrenia. Following recent proposals of time dynamic networks, this impairment m...

journal_title：NeuroImage

authors： Ortuño FM,Lopez P,Ojeda N,Cervera S

更新日期：2005-01-15 00:00:00

abstract：:Owing to its intrinsic characteristics, spatiotemporally encoded (SPEN) imaging is less sensitive to adverse effects due to field inhomogeneity in comparison with echo planar imaging, a feature highly desired for functional, diffusion, and real-time MRI. However, the quality of images obtained with SPEN MRI is still d...

journal_title：NeuroImage

authors： Li J,Chen L,Cai S,Cai C,Zhong J,Chen Z

更新日期：2015-01-15 00:00:00

abstract：:Connectivity studies using resting-state functional magnetic resonance imaging are increasingly pooling data acquired at multiple sites. While this may allow investigators to speed up recruitment or increase sample size, multisite studies also potentially introduce systematic biases in connectivity measures across sit...

journal_title：NeuroImage

authors： Dansereau C,Benhajali Y,Risterucci C,Pich EM,Orban P,Arnold D,Bellec P

更新日期：2017-04-01 00:00:00

abstract：:Beta+-sensitive probes are useful tools for the measurement of radiotracer kinetics in small animals. They allow the cost-effective development of new PET tracers and offer the possibility to investigate a variety of cerebral processes. The study's main aim was the in vivo evaluation of a probe system for cerebral sur...

journal_title：NeuroImage

authors： Wyss MT,Obrist NM,Haiss F,Eckert R,Stanley R,Burger C,Buck A,Weber B

更新日期：2009-11-01 00:00:00