Abstract：
:Application of fMRI to clinical neurology implies the selection of a simple task and control of the task performance. The capability to objectively monitor variables related to task execution is, therefore, important and could improve accuracy of clinical fMRI studies. We assessed the influence of different self-paced frequencies of a simple motor task on brain activation in healthy subjects. A device was developed to measure the force exerted by a subject in pressing an air-filled rubber bulb with the last four fingers of the dominant hand. The task frequency was determined by analysis of the force signal. Nine healthy subjects performed twice the task with self-paced slow (0.35+/-0.09 Hz), intermediate (0.58+/-0.21 Hz) or fast (0.98+/-0.32 Hz) frequency. The device revealed impaired task execution in 1 subject. The coefficient of variation of frequency was 8.7% for slow, 12.2% for intermediate and 15.8% for fast paced task. No significant differences were found comparing the activation maps obtained at slow, intermediate and fast frequencies in the contralateral sensorimotor cortex and ipsilateral cerebellum. Cluster reproducibility was good for location (standard deviation journal_name journal_title authors doi subject pub_date pages issue eissn issn pii journal_volume pub_type
相关文献
NEUROIMAGE文献大全abstract：:In vivo calcium (Ca2+) imaging using two-photon microscopy allows activity to be monitored simultaneously from hundreds of individual neurons within a local population. While this allows us to gain important insights into how cortical neurons represent sensory information, factors such as photo-bleaching of the Ca2+ i...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2018.01.009
更新日期：2018-10-15 00:00:00
abstract：:Age-related impairments in the default network (DN) have been related to disruptions in connecting white matter tracts. We hypothesized that the local correlation between DN structural and functional connectivity is negatively affected in the presence of global white matter injury. In 125 clinically normal older adult...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2015.05.054
更新日期：2015-08-15 00:00:00
abstract：UNLABELLED:Neuropsychological studies of patients suffering from apraxia strongly imply a left hemisphere basis for skillful object use, the neural mechanisms of which, however, remain to be elucidated. We therefore carried out a PET study in 14 healthy human volunteers with the aim to isolate the neural mechanisms und...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2003.11.017
更新日期：2004-04-01 00:00:00
abstract：:The ability to mentally imagine the performance of automatic movements has been well-established being employed in sports and physiotherapy as a tool for motor learning and rehabilitation. This is probably mediated by engagement of the same brain areas as during real motor performance. Here we investigated the effect ...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2012.10.073
更新日期：2013-02-01 00:00:00
abstract：:Power and precision grasps are two interrelated, kinematically distinct types of finger movements. We examined whether these types of motor actions may be spatially differently represented in the human central nervous system. In healthy participants representations of finger movements were mapped by delivering single ...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2017.06.080
更新日期：2017-09-01 00:00:00
abstract：:Language lateralization based on functional magnetic resonance imaging (fMRI) is often used in clinical neurological settings. Currently, interpretation of the distribution, pattern and extent of language activation can be heavily dependent on the chosen statistical threshold. The aim of the present study was to 1) te...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2010.01.059
更新日期：2010-05-01 00:00:00
abstract：:Growing neurophysiological evidence points to a role of alpha oscillations in divergent thinking (DT). In particular, studies have shown a consistent EEG alpha synchronization during performance on the Alternative Uses Task (AUT), a well-established DT task. However, there is a need for investigating the brain dynamic...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2019.116385
更新日期：2020-02-15 00:00:00
abstract：:A well-recognized problem with the echo-planar imaging (EPI) technique most commonly used for functional magnetic resonance imaging (fMRI) studies is geometric distortion caused by magnetic field inhomogeneity. This makes it difficult to achieve an accurate registration between a functional activation map calculated f...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1006/nimg.2001.1054
更新日期：2002-05-01 00:00:00
abstract：:Schippers, Renken and Keysers (NeuroImage, 2011) present a simulation of multi-subject lag-based causality estimation. We fully agree that single-subject evaluations (e.g., Smith et al., 2011) need to be revisited in the context of multi-subject studies, and Schippers' paper is a good example, including detailed multi...
journal_title：NeuroImage
pub_type： 评论,杂志文章
doi：10.1016/j.neuroimage.2011.08.015
更新日期：2012-01-16 00:00:00
abstract：:Movements result from a complex interplay of multiple brain regions. These regions are assembled into distinct functional networks depending on the specific properties of the action. However, the nature and details of the dynamics of this complex assembly process are unknown. In this study, we sought to identify key m...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2016.06.052
更新日期：2016-10-01 00:00:00
abstract：:Efficient encoding of relevant information and suppression of irrelevant information influence working memory (WM) performance, which is limited and declines in adulthood. A cued Sternberg WM task and electroencephalographic recordings (EEG) were used to investigate encoding and control operations in response to to-be...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2011.11.071
更新日期：2012-03-01 00:00:00
abstract：:Twenty-seven preterm infants were compared to 10 full-term infants at term equivalent age using a voxel-based analysis of diffusion tensor imaging of the brain. Preterm infants exhibited higher fractional anisotropy values, which may suggest accelerated maturation, in the location of the sagittal stratum. While some e...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2008.02.029
更新日期：2008-07-01 00:00:00
abstract：:Gestures are elemental components of social communication and aid comprehension of verbal messages; however, little is known about the potential role of gestures in facilitating processing of semantic complexity in an ecologically valid setting. The goal of this study was to investigate whether cognitive load, as inde...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2019.03.054
更新日期：2019-07-15 00:00:00
abstract：:Chemical exchange between water and labile protons from amino-acids, proteins and other molecules can be exploited to provide tissue contrast with magnetic resonance imaging (MRI) techniques. Using an off-resonance Spin-Locking (SL) scheme for signal preparation is advantageous because the image contrast can be tuned ...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2011.08.014
更新日期：2012-01-16 00:00:00
abstract：:Brain connectivity is traditionally thought to be important for creativity. Here we investigated the associations of creativity measured by divergent thinking (CMDT) with resting-state functional magnetic imaging (fMRI) measures and their sex differences. We examined these relationships in the brains of 1277 healthy y...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2017.02.079
更新日期：2017-05-15 00:00:00
abstract：:Parent-child personality transmission can occur via biological gene-driven processes as well as through environmental factors such as shared environment and parenting style. We recently revealed a negative association between prosociality, a highly valued personality attribute in human society, and anterior cingulate ...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2020.116965
更新日期：2020-09-01 00:00:00
abstract：:Slow and rapid event-related designs are used in fMRI and functional near-infrared spectroscopy (fNIRS) experiments to temporally characterize the brain hemodynamic response to discrete events. Conventional averaging (CA) and the deconvolution method (DM) are the two techniques commonly used to estimate the Hemodynami...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2017.04.048
更新日期：2017-07-15 00:00:00
abstract：:Activity of the prefrontal cortex (PFC) has been observed in previous block-design brain imaging studies of self-initiated movements. However, the meaning of these activations remained unclear. A functional MRI experiment was carried out, which utilized an epoch and an event-related analysis approach to the data. We h...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2005.06.044
更新日期：2005-11-15 00:00:00
abstract：:Research on dopamine (DA) transmission has emphasized the importance of increased phasic DA cell firing in the presence of unpredictable rewards. Using [(11)C]raclopride PET, we previously reported that DA transmission was both suppressed and enhanced in different regions of the striatum during an unpredictable reward...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2007.10.034
更新日期：2008-02-15 00:00:00
abstract：:Making sense of a neuroimaging literature that is growing in scope and complexity will require increasingly sophisticated tools for synthesizing findings across studies. Meta-analysis of neuroimaging studies fills a unique niche in this process: It can be used to evaluate the consistency of findings across different l...
journal_title：NeuroImage
pub_type： 杂志文章,评审
doi：10.1016/j.neuroimage.2008.10.061
更新日期：2009-03-01 00:00:00
abstract：:In this work we treat fMRI data analysis as a spatiotemporal system identification problem and address issues of model formulation, estimation, and model comparison. We present a new model that includes a physiologically based hemodynamic response and an empirically derived low-frequency noise model. We introduce an e...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1006/nimg.2001.0870
更新日期：2001-10-01 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
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2004.09.010
更新日期：2005-01-15 00:00:00
abstract：:Engagement of various forms of attention and response preparation determines behavioral performance during stimulus-response tasks. Many studies explored the respective properties and neural signatures of each of these processes. However, very few experiments were conceived to explore their interaction. In the present...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2015.09.051
更新日期：2016-01-01 00:00:00
abstract：:In neuroimaging, data are often modeled using general linear models. Here, we focus on GLMs with error covariances which are modeled as a linear combination of multiple variance/covariance components. Each of these components is weighted by one variance parameter. In many analyses variance parameters are estimated usi...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/s1053-8119(03)00308-2
更新日期：2003-09-01 00:00:00
abstract：:Recent work has shown a dramatic contrast between GM and WM in gradient echo phase images at high field (7 T). Although this contrast is key to the exploitation of phase in imaging normal and pathological tissue, its origin remains contentious. Several sources for this contrast have been considered including iron cont...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2009.12.052
更新日期：2010-04-01 00:00:00
abstract：:We introduce MACACC-Mapping Anatomical Correlations Across Cerebral Cortex-to study correlated changes within and across different cortical networks. The principal topic of investigation is whether the thickness of one area of the cortex changes in a statistically correlated fashion with changes in thickness of other ...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2006.01.042
更新日期：2006-07-01 00:00:00
abstract：OBJECTIVES:Auditory and visual deviant stimuli evoke mismatch negativity (MMN) responses, which can be recorded with electroencephalography (EEG) and magnetoencephalography (MEG). However, little is known about the role of neuronal oscillations in encoding of rare stimuli. We aimed at verifying the existence of a mecha...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2016.07.024
更新日期：2016-11-15 00:00:00
abstract：:Mäkinen et al. [Mäkinen, V., Tiitinen, H., May, P., 2005. Auditory event-related responses are generated independently of ongoing brain activity. Neuroimage 24, 961-968] suggest the use of amplitude variance to distinguish the evoked response from phase reset. Because their data do not exhibit a drop in amplitude vari...
journal_title：NeuroImage
pub_type： 评论,杂志文章
doi：10.1016/j.neuroimage.2005.08.041
更新日期：2006-02-01 00:00:00
abstract：:It is commonly assumed that, in the cochlea and the brainstem, the auditory system processes speech sounds without differentiating them from any other sounds. At some stage, however, it must treat speech sounds and nonspeech sounds differently, since we perceive them as different. The purpose of this study was to deli...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2006.01.004
更新日期：2006-07-01 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
pub_type： 临床试验,杂志文章
doi：10.1016/j.neuroimage.2005.01.014
更新日期：2005-05-15 00:00:00
