Abstract：
:The extent to which a task demands verbal or non-verbal processing may influence which neural regions underlie performance. In the present study, sustained and transient responses were examined using functional magnetic resonance imaging (fMRI) in conjunction with a mixed blocked/event-related design during three visual-matching tasks that varied in the extent to which they relied on verbal processing. In a name-matching task, subjects decided whether two letters had the same or a different name (e.g., A a); in a physical-matching task, subjects decided whether two letters were exactly the same or different (e.g., A A); in a non-letter-matching task, subjects decided whether two non-letters were exactly the same or different. Results revealed several regions in which sustained activity differed across the three tasks as well as several regions in which sustained activity did not differ. Most notably, regions in the right inferior frontal gyrus exhibited greater sustained activity during the name-matching task than during the physical or non-letter-matching tasks, indicating that sustained activity in this region is sensitive to the amount of verbal processing required by a particular task. Moreover, transient activity in the right inferior frontal regions, as well as others, exhibited the opposite pattern of results. In combination, results suggest that sustained and transient activities interact to produce the context-appropriate response during visual-matching tasks.
journal_name
Neuroimagejournal_title
NeuroImageauthors
Darcy Burgund E,Lugar HM,Schlaggar BL,Petersen SEdoi
10.1016/j.neuroimage.2004.12.039keywords:
subject
Has Abstractpub_date
2005-04-01 00:00:00pages
511-9issue
2eissn
1053-8119issn
1095-9572pii
S1053-8119(04)00803-1journal_volume
25pub_type
杂志文章相关文献
NEUROIMAGE文献大全abstract：:We review our recent data obtained on the cortical and subcortical components of the human sympathetic connectome - the network of regions involved in the sympathetic control of blood pressure. Specifically, we functionally identified the human homologue of the rostral ventrolateral medulla (RVLM), the primary premoto...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2019.116119
更新日期：2019-11-15 00:00:00
abstract：:The brainstem is the part of the human brain that plays a pivotal role in the maintenance of many critical body functions. Due to the elevated level of cardiogenic noise, few fMRI studies have investigated the brainstem so far. Cardiac-gated echo-planar imaging with acquisition of two echoes per excitation (dual-echo ...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2011.01.042
更新日期：2011-04-15 00:00:00
abstract：:A new functional MRI protocol that integrates variable echo time (TE) acquisition and a block-design paradigm is proposed and evaluated with finger-tapping motor task. Simulations and experimental data show that the blood oxygenation level-dependent (BOLD) sensitivity achieved with this approach is comparable to that ...
journal_title：NeuroImage
pub_type： 临床试验,杂志文章
doi：10.1016/j.neuroimage.2003.08.013
更新日期：2003-12-01 00:00:00
abstract：:Volitional swallowing in humans involves the coordination of both brainstem and cerebral swallowing control regions. Peripheral sensory inputs are necessary for safe and efficient swallowing, and their importance to the patterned components of swallowing has been demonstrated. However, the role of sensory inputs to th...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2008.04.234
更新日期：2008-08-01 00:00:00
abstract：:White matter thalamo-cortical fibers allow the communication of distant brain regions by carrying neuronal signals. Mapping non-invasively the information flow within white matter fibers is regarded so far as impossible. We investigated here whether information flow propagating along thalamo-cortical fibers can be det...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2012.01.054
更新日期：2012-04-02 00:00:00
abstract：:Functional ultrasound imaging is a method recently developed to assess brain activity via hemodynamics in rodents. Doppler ultrasound signals allow the measurement of cerebral blood volume (CBV) and red blood cells' (RBCs') velocity in small vessels. However, this technique originally requires performing a large crani...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2014.06.063
更新日期：2014-11-01 00:00:00
abstract：:Breathing carbogen (5% CO2 / 95% O2) dramatically increases cerebral blood flow (CBF), which induces a blood oxygenation level dependent (BOLD) related vascular signal change due to the concomitantly increased oxyhemoglobin concentration in the veins. However, carbogen often causes discomfort due to its forced strong ...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2008.07.008
更新日期：2008-10-15 00:00:00
abstract：:The widely used Logan plot in radioligand receptor dynamic PET studies produces marked noise-induced negative biases in the estimates of total distribution volume (DV(T)) and binding potential (BP). To avoid the inconsistencies in the estimates from the Logan plot, a new graphical analysis method was proposed and char...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2008.09.021
更新日期：2009-02-01 00:00:00
abstract：:Paradigms drawn from cognitive psychology have provided new insight into covert stages of action. These states include not only intending actions that will eventually be executed, but also imagining actions, recognizing tools, learning by observation, or even understanding the behavior of other people. Studies using t...
journal_title：NeuroImage
pub_type： 杂志文章,评审
doi：10.1006/nimg.2001.0832
更新日期：2001-07-01 00:00:00
abstract：:To investigate the cross-modal transfer of movement patterns necessary to perform melodies on the piano, 22 non-musicians learned to play short sequences on a piano keyboard by (1) merely listening and replaying (vision of own fingers occluded) or (2) merely observing silent finger movements and replaying (on a silent...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2012.03.038
更新日期：2012-11-01 00:00:00
abstract：:Recent neuroimaging studies have shown that several prefrontal regions play critical roles in inhibiting activation of limbic regions during voluntary emotion regulation. The present study aimed to confirm prior findings and to extend them by identifying the frontal neural circuitry associated with regulation of perip...
journal_title：NeuroImage
pub_type： 临床试验,杂志文章
doi：10.1016/j.neuroimage.2005.08.047
更新日期：2006-02-01 00:00:00
abstract：:The human brain can be described as a network of specialized and spatially distributed regions. The activity of individual regions can be estimated using electroencephalography and the structure of the network can be measured using diffusion magnetic resonance imaging. However, the communication between the different ...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2019.116017
更新日期：2019-11-01 00:00:00
abstract：:ConnectomeDB is a database for housing and disseminating data about human brain structure, function, and connectivity, along with associated behavioral and demographic data. It is the main archive and dissemination platform for data collected under the WU-Minn consortium Human Connectome Project. Additional connectome...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2015.04.046
更新日期：2016-01-01 00:00:00
abstract：:In this paper, we examined three vector quantization (VQ) methods used for the unsupervised classification (clustering) of functional magnetic resonance imaging (fMRI) data. Classification means that each brain volume element (voxel), according to a given scanning raster, was assigned to one group of voxels based on s...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1006/nimg.2001.0792
更新日期：2001-07-01 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
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2020.116516
更新日期：2020-04-01 00:00:00
abstract：:Impairments in the ability to recollect specific details of personally experienced events are one of the main cognitive changes associated with aging. Cognitive training can improve older adults' recollection. However, little is currently known regarding the neural correlates of these training-related changes in recol...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2012.06.017
更新日期：2012-09-01 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
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/s1053-8119(03)00302-1
更新日期：2003-09-01 00:00:00
abstract：:This paper describes an investigation of gangliocytes via imaging semithin sections of two human trigeminal ganglia with an atomic force microscope (AFM). Whereas semithin sections are usually employed for transmission electron microscopy, we adopted this special type of sample preparation for our AFM studies to extra...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1006/nimg.2001.0924
更新日期：2001-12-01 00:00:00
abstract：BACKGROUND:The measurement of brain perfusion may provide valuable information for assessment and treatment of newborns with hypoxic-ischemic encephalopathy (HIE). While arterial spin labeled perfusion (ASL) magnetic resonance imaging (MRI) provides noninvasive and direct measurements of regional cerebral blood flow (C...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2013.04.072
更新日期：2014-01-15 00:00:00
abstract：:In an effort to examine the functional neuroanatomy of semantic memory, we studied the relative cerebral blood flow of eight healthy young subjects using 15O-water positron emission tomography (PET). Relative to a visual baseline control condition, each of four visual matching-to-sample tasks activated components of t...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1006/nimg.1998.0386
更新日期：1999-01-01 00:00:00
abstract：:Empathy may allow interindividual sharing not only of emotions (e.g., joy, sadness, disgust) but also of sensations (e.g., touch, itching, pain). Although empathy for pain may rely upon both sensory and affective components of the pain experience, neuroimaging studies indicate that only the affective component of the ...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2006.03.010
更新日期：2006-08-01 00:00:00
abstract：:We applied diffusion tensor tractography (DTT), a recently developed MRI technique that reveals the microstructures of tissues based on its ability to monitor the random movements of water molecules, to the visualization of peripheral nerves after injury. The rat sciatic nerve was subjected to contusive injury, and th...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2008.09.022
更新日期：2009-02-01 00:00:00
abstract：:Insights into memory retrieval processes can be obtained by examining graded recall success, specifically, tip-of-the-tongue (TOT) and feeling-of-knowing (FOK) states. TOT is defined as a recall failure accompanied by a strong feeling of imminent retrieval, and FOK as a recall failure accompanied by a feeling of futur...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2004.10.024
更新日期：2005-02-15 00:00:00
abstract：:In this paper we present a novel wavelet-based Bayesian nonparametric regression model for the analysis of functional magnetic resonance imaging (fMRI) data. Our goal is to provide a joint analytical framework that allows to detect regions of the brain which exhibit neuronal activity in response to a stimulus and, sim...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2014.03.024
更新日期：2014-07-15 00:00:00
abstract：:Although the majority of fMRI studies exploit magnitude changes only, there is an increasing interest regarding the potential additive information conveyed by the phase signal. This integrated part of the complex number furnished by the MR scanners can also be used for exploring direct detection of neuronal activity a...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2011.10.095
更新日期：2012-02-15 00:00:00
abstract：:Accurate estimation of location and extent of neuronal sources from EEG/MEG remain challenging. In the present study, a new source imaging method, i.e. variation and wavelet based sparse source imaging (VW-SSI), is proposed to better estimate cortical source locations and extents. VW-SSI utilizes the L1-norm regulariz...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2013.09.070
更新日期：2014-02-01 00:00:00
abstract：:Intentional action is essential to human behavior, yet its neural basis remains poorly understood. In order to identify neural networks specifically involved in intentional action, freely chosen and externally cued intentions have previously been contrasted. This has led to the identification of a fronto-parietal netw...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2016.04.044
更新日期：2016-07-01 00:00:00
abstract：:Functional MRI (fMRI) brain studies performed in the presence of a steady-state or "blood pool" contrast agent yields activation maps that are weighted for cerebral blood volume (CBV). Previous animal experiments suggest significant contrast-to-noise ratio (CNR) improvements, but these studies have not yet been perfor...
journal_title：NeuroImage
pub_type： 临床试验,杂志文章
doi：10.1016/j.neuroimage.2012.05.010
更新日期：2012-09-01 00:00:00
abstract：:Animal and human studies have frequently shown that in primary sensory and motor regions the BOLD signal correlates positively with high-frequency and negatively with low-frequency neuronal activity. However, recent evidence suggests that this relationship may also vary across cortical areas. Detailed knowledge of the...
journal_title：NeuroImage
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.neuroimage.2014.01.057
更新日期：2014-05-15 00:00:00
abstract：:More than one-third of adults in the United States are obese, with a higher prevalence among older adults. Obesity among older adults is a major cause of physical dysfunction, hypertension, diabetes, and coronary heart diseases. Many people who engage in lifestyle weight loss interventions fail to reach targeted goals...
journal_title：NeuroImage
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.neuroimage.2018.02.025
更新日期：2018-06-01 00:00:00
